Future in Java: 2017

Tuesday, December 26, 2017

hybris

Thursday, December 21, 2017

Java Ecommerce Platforms

Hybris

Wednesday, December 20, 2017

JPA Errors

o.h.t.s.e.i.InformationExtractorJdbcDatabaseMetaDataImpl:365 - HHH000262:

Table not found:

the solution of above is terminate the current application

remove the application from the server and restart

Sunday, December 10, 2017

domain modelling

write the queries that would be executed against the domain model.
test their performance

Thursday, December 7, 2017

UML

careful written specification
use case
domain model
architecture diagram
model driven architecture

agile modeling classDiagram
association class
c_unidir_bidir_relationships.html
One rule in database design is that a running system should never require a design change just to add data (changes to the design do occur, of course, just not in response to a new data value).
association
aggregation
dependency
weak entity

association class
abstraction through interface
abstract class
cardinality
unidirectional vs bidirectional relationships

constraints and validation
data binding
type conversion

component diagram
deployment diagram

use case diagrams

================================

OOAD
UML
Agile modelling
Design Pattern
JPA
hibernate

Iconix
RUP
====================
the best practices of above all

book JPA with hibernate by gavin king
- sequence diagram
- dependency vs association
- it's a best practice to prefer unidirectional relationships in a model whenever possible
- if we group similar attributes in the form of a multiple classes then the change in one wont change all the clases. instead if there is a single class then if any change is made then whole class is affected

Tuesday, December 5, 2017

data type

int is the best data type if only year has to be stored

Monday, December 4, 2017

Stay Motivated

Learn the Basics
Study

best books
reference documentation

Meditate
Always Experiment
Note down the confusion
Ask the expert

Stackoverflow

Never ever think negative
Refine
Test everything
Make notes of the lessons
Learn from the best by paying
Teach for free
watch videos
Connect with the Community of the like minded people
NEVER GIVE UP

Think about Gail Devers and Magic Johnson

Be Pure
Help Others
Fight
Focus on what you love
Sacrifice everything for the Goal
Dream Dream Dream
Passion My friend
If you believe you can do it

Always Say I shall do it!!!

Pray Hard
Work Harder

Remember Lincoln

Enhance your focus

Remember Arjuna

Consistency is the key

water can break mountains

Remember Eklavya

Nobody taught him

Refine your Code
Apply the Design Patterns
Apply the Best Practices

Spring Expression Language

SPEL

The best Practices

JMX
Web Services
OSGi
MicroServices
Clusters
Load Balancing
UML
Visual Paradigm
Functionalities in the form of REST
Messaging

WebSocket
RabbitMQ
STOMP

Friday, December 1, 2017

JPA

mapped superclass should be represented as abstract classes in Java.
super classes that represent partial state should better be represented as abstract classes
single table inheritance is the best strategy
In single table inheritance mapping the subclasses do not require to have id fields.

inheritance

apply inheritance to class only if it is really required esp with respect to JPA. ie it should be done if data is divided among the subclasses to a great extent not just to share common methods otherwise it will create complex joins and take much time for accessing the required data.

Friday, November 24, 2017

system design approach

designwithmodels

hibernate

n+1 read problem
problem of granularity
domain model
coarse grained class vs fine grained class

rdbms issues

index
materialized view
query optimization
how to read query execution plan?
joins esp hash
performance tuning
partitioning
pre-joined indexes
buffer
latching problem
filter in join
join order
algebra
statistics
graph theory

Thursday, November 23, 2017

performance

use memcache or redis to cache the following

city/state/country
zipcode
qualication types
job types

Representing address

how-to-design-the-database-schema-representing-address-elegantly
Use first solution, If a country does not has any states, just add a dummy state (same as country name). Cache the data of city, state, country (which are not likely to be changes but frequently needed) in database (Query cache) or in server (using APC/memcached etc). Once cached, you wont need many joins thus making queries faster
the previous solution is related to the information given in the link
best-practices-for-storing-postal-addresses-in-a-database-rdbms
make address an entity and store it in a cache like redis or memcache

Wednesday, November 22, 2017

Spring Boot doubts

disabling embedded tomcat server

can we disable it
how to configure it?

how to know the server being used ie pivotal or embedded tomcat or outside tomcat?
how to monitor ports which are being used?
use the following command at command prompt to show the port number in use
netstat -anp | find "port 8080" is not working

debugging a spring boot application

indepth knowledge of build tool like maven and gradle
indepth knowledge of logging
indepth knowledge of server ie tomcat etc
indepth knowledge of browser
indepth knowledge of cache and how to clean it and disabling it

STS issues

terminating unresponsive applications

user interface

horizontal navigational footer menu

it should be displayed in the middle one below the other when screen size is reduced
ie it should be responsive

Tuesday, November 21, 2017

Web design graphics

Blur-the-Background-of-a-Photograph

Spring security lessons

css and image files were not getting loaded because i had overridden the configure method of

WebSecurityConfigurerAdapter class as follows:

@Override
    public void configure(final WebSecurity web) throws Exception {

       web.ignoring().antMatchers("/");

    }
The above was not loading the css and images. the reason is yet to be known.
So when i entered the authentication password css and image files are getting loaded as desired.
@Override
    protected void configure(final HttpSecurity http) throws Exception {
    http
        .csrf().disable()
        .authorizeRequests()
            .antMatchers("/","/css/**","/images/**").permitAll();
}
the above solved the problem to bypass the security for home page,css and image.
we also need to override the following method of webconfigurerAdapter class to serve the static resources ie we need to add the resource locations through the following commands:
@Override
    public void addResourceHandlers(final ResourceHandlerRegistry registry) {
      //registry.addResourceHandler("/resources/**").addResourceLocations("/", "/resources/");

registry.addResourceHandler("/css/**").addResourceLocations("classpath:/static/css/");
registry.addResourceHandler("/images/**").addResourceLocations("classpath:/static/images/");
registry.addResourceHandler("/js/**").addResourceLocations("classpath:/static/js/");


     }

Being a Writer

Saturday, November 18, 2017

Spring Information

spring-annotations

Friday, November 10, 2017

hello spring boot with css and image

following is the hello spring boot example on github. This example does not use any database and neither spring security has been used.
hello spring boot with static resources

Thursday, November 9, 2017

github errors

dealing-with-non-fast-forward-errors
when we create a repository and then add a readme file to it then while pushing to it generates the error. I have not worked on its solution instead I created a new repository and did not add readme. then performed the following steps

goto to the root of the project folder ( check its properties by right clicking n it)
git init
git remote add origin https://github.com/javaiskool/springexamples.git
i got the error:
fatal: remote origin already exists.
i removed the error by using the following command
git remote rm origin
then
git remote add origin https://github.com/javaiskool/springexamples.git
git add .
git commit -a -m "initial commit"
git push -u origin --all
after that i created a readme.md file and described the example.
As the repository is public username and password were not asked

Wednesday, November 8, 2017

thymeleaf

usingthymeleaf

e-commerce

order vs orderline

order has the details of customer,orderid,orderdate
orderline has the details about the order ie all the products that particular order contains ie same sone order can have multiple quantities of multiple products.
see the example

spring problems

addResourceLocation
thymeleaf-url-expression-in-css-file

spring boot

howto-traditional-deployment.html
spring-boot-samples
spring-boot
tutorial-spring-boot-war-files
@Bean
The spring.main.banner-mode property is a Spring built-in property; we turn off the Spring's banner
logging through logback
spring-boot/boot-serve-static
adding-external-directory-to-spring-boots-static-resources-handling
webjars
spring boot solutions by andy-wilkinson @stackoverflow

spring application can be found under debug menu in sts and hence it can be terminated here
if unable to create spring boot project inside STS 3.8.4 then goto start.spring.io
there Spring Initializer
click switch to full version
choose the required dependencies
download the zip
unzip it
open it in STS as new maven project
tutorial-spring-boot-application-development-using-sts.html

Monday, November 6, 2017

elastic beanstalk

Sunday, November 5, 2017

aws

separate-aws-production-and-development-accounts
separate aws accounts for

production(consolidated billing)
developer
QA
billing

for consolidated billing we need to create the organization and the creator of the organization is the owner of the organization and can control the services of the other linked accounts.
for this the owner need to add account through the email or account id. if the invitee accepts the invitation then services of this account can be controlled by the organization owner.
details is as follows:
If you accept the invitation, the administrator of the organization can attach policy-based controls to your AWS account. The organization administrator can control which AWS services and APIs are allowed in this account for business reasons such as security or budgetary controls. These controls can include preventing this account from leaving the organization.

Sunday, October 29, 2017

Samsung galaxy j7 prime information

samsung-galaxy-j7-prime-codes.html
samsung-galaxy-j7-prime-3735-vs-samsung-galaxy-j7-2720
Today, mobile phones use IR-based proximity sensors to detect the presence of a human ear. This sensing is done for two purposes: Reduce display power consumption by turning off the LCD backlight and to disable the touch screen to avoid inadvertent touches by the cheek.

bootstrap

the-best-way-to-learn-Bootstrap
sass mixin
galaxy-j7-prime responsive check
baseline
reboot
less
sass
flexbox
bootstrap plugin?
modal and modal.js?
bootstrap 3 vs bootstrap 4
when do we need id attribute? is it always required?
How to define our own class in bootstrap?
How can we customize appearance?
sm means small
lg means large
how to view properties in browser?
how to analyze properties in browser?
order pf the property values?

spring mvc

spring-4-mvc-without-controller-using-viewcontrollerregistry-with-addviewcontroller-addredirectviewcontroller-and-addstatuscontroller-example

spring security

login-page – the custom login page
default-target-url – the landing page after a successful login
authentication-failure-url – the landing page after an unsuccessful login
https://spring.io/guides/gs/securing-web/ how-to-disable-spring-security-for-particular-url
for checked attribute it should be written like checked="checked"
single sign on

Single sign-on (SSO) is a property of access control of multiple related, yet independent, software systems. With this property, a user logs in with a single ID and password to gain access to a connected system or systems without using different usernames or passwords, or in some configurations seamlessly sign on at each system. This is typically accomplished using the Lightweight Directory Access Protocol (LDAP) and stored LDAP databases on (directory) servers.^[1] A simple version of single sign-on can be achieved over IP networks using cookies but only if the sites share a common DNS parent domain.^[2]
For clarity, it is best to refer to systems requiring authentication for each application but using the same credentials from a directory server as Directory Server Authentication and systems where a single authentication provides access to multiple applications by passing the authentication token seamlessly to configured applications as Single Sign-On.
Conversely, single sign-off is the property whereby a single action of signing out terminates access to multiple software systems.

google is an example of sso. by logging to gmail we can use blogger, youtube etc
and once we logout of any of the services then we can no longer use any of the connected services.

what-is-and-how-does-single-sign-on-work/
httpsecurity-websecurity-and-authenticationmanagerbuilder

security

replay attack
basic authentication vs digest authentication
track method should be disabled
Cross-site_tracing must be disabled
Password generation and validation
what is cross site request forgery attack and how to disable it?
social engineering
csrf
http basic in spring
RSA
a validation system that does not display the original values. One option is to store the values in a database and only pass the reference id of the row to the form, assuming that's what you mean. You can do all your processing on the server side and minimize the amount of sensitive data passed to the client side.

spring

to-make-spring-security-bypass-some-urls-and-intercept-rest-all-url-s

displaying hindi characters

unicode of hindi characters

Saturday, October 28, 2017

web browsers

IE 6
IE 8
IE 9

Monday, October 23, 2017

User Interface Testing

check responsive behaviour
resize the browser to

normal
narrow
wide

check any broken links
check the validation
check the page loading time esp images
check on various devices

android smartphone
iphone
windows phone
tablet galaxy series
ipad
blackberries

check by deleting css line ie <link rel="stylesheet"> ie without css support
check by disabling javascript
check in various browsers esp old ones ie before IE 4/ and new one

IE
firefox
chrome
safari
opera

CSS 2

liquid vs fixed layout?
float?
clear?
layout?
animation?
font?
what could be the browser support for CSS and how to find this out?
A jello layout is one in which the content width is fixed, but the margins expand and shrink with the browser
absolute positioning
z-index
when an element is absolutely positioned, it is removed from the normal flow of the page.
position

static
absolute
fixed
relative

If you specify width in percentage then their size is flexible
Another common use for percentages is in specifying widths. If you don’t need specific widths for your elements or margins, then you can use percentages to make both your main content area and your sidebars flexible in size. You’ll see this done a lot in two- and three- column layouts.
negative left property value
css special effetcs
fixed positioning vs absolute positioning vs static positioning
border-collapse: collapse;

The border-collapse property is a special CSS property for tables that allows you to combine cell borders into one border for a cleaner look

.blueberry p { color: purple; } Here we’re selecting all paragraphs that are descendants of an element in the blueberry class.

Thursday, October 19, 2017

User Interface Design

Superb Resources

Career Avenues

ABAP

Apache

Wednesday, October 18, 2017

image

if an image is made transparent it can be placed on another image
we can make an image transparent in ms paint as well

making-the-background-of-an-image-transparent-in-ms-paint-tip/

finding-truly-free-stock-images

User Interface Design Approach

Divide the Interface into logical sections.
A logical section is just a group of elements that are all related on the page
don’t add structure for structure’s sake. Always keep your structure as simple as possible to get the job done. For instance, if it is helpful to add a “pets” section that contains both “cats” and “dogs” to the PetStorz page, by all means add it. However, if it provides no real benefit, then it just complicates your page. After working with <div>s for a while, you’ll start to get a feel for when and how much to use them
Do you ever put <div>s in a class instead of giving it an id? A: Well, remember that an element can have an id and be in one or more classes at the same time, so the choice isn’t mutually exclusive. And, yes, there are many times you create <div>s and place them into classes. Say you have a bunch of album sections in a page of music playlists; you might put all the elements that make up the album into a <div> and then put them all in a class called “albums”. That identifies where the albums are, and they can all be styled together with the class. At the same time you might give each album an id so that it can have additional style applied separately.
same color for heading and the logo
very nice font
high definition pictures
white background
bootstrap for responsive design
image carousel

Monday, October 16, 2017

CSS 1

How to find out the html version supported by the client browser and based on that return that CSS?
Headfirst HTML CSS
CSS: the definitive guide
CSS Pocket Reference
Well, if you think about it, this gives you a lot of leverage when you use a <div>, because you can wrap a section of content in a <div> and then apply styles to the <div> rather than each individual element. Of course, keep in mind that not all properties are inherited by default, so this won’t work for all properties.
<div> lets you divide your page into logical sections or groupings. p.specials child elements inherit the properties of parent. But this property can also be overridden
there are two kind of elements. block level and inline
block level have line break at the beginning and at the end where as there is no line break with inline elements
each element is put in a box. so css has a box model
One difference between padding and margins is that the element’s background color (or background image) will extend under the padding, but not the margin
25px is good margin for paragraph as it makes it more readable
properties for a paragraph:

border-color: black;
border-width: 1px;
border-style: solid;
background-color: #a7cece;
padding: 25px;
margin: 30px;

you can add a background image to any element using the background-image property.
background-image: url(images/background.gif);
background-repeat: no-repeat;
background-position: top left;
How do you add padding only on the left? For padding, margins, and even borders, CSS has a property for every direction: top, right, bottom, and left. To add padding on the left side, use the padding-left property, like this:
.guarantee {
line-height: 1.9em;
font-style: italic;
font-family: Georgia, “Times New Roman”, Times, serif;
color: #444444;
border-color: black;
border-width: 1px;
border-style: solid;
background-color: #a7cece;
padding: 25px;
padding-left: 80px;
margin: 30px;
background-image: url(images/background.gif);
background-repeat: no-repeat;
background-position: top left; }
We’re using the padding-left property to increase the padding on the left.. Notice that we first set the padding on all sides to 25 pixels, and then we specify a property for the left side. Order matters here - if you switch the order, then you’ll set the padding for the left side first, and then the general padding property will set all sides back to 25 pixels, including the left side!
margin: 30px;
margin-right: 250px;
border-top-color
border-top-style
border-top-width
border-bottom-color
border-bottom-style
border-bottom-width
border-right-color
border-right-style
border-right-width
border-left-color
border-left-style
border-left-width
border-style: dashed;
border-color: white;
Browsers can have different default sizes for the keywords thin, medium, and thick, so if the size of your border is really important to you, consider using pixel sizes instead.
use id for header,footer and navigation-bar
you use a class when you might want to use a style with more than one element
Giving an element an id is similar to adding an element to a class. The only differences are that the attribute is called “id”, not “class”, an element can’t have multiple ids, and you can’t have more than one element on a page with the same id.
An element can have an id and also belong to a class. Think about it this way: an id is just a unique identifier for an element, but that doesn’t prevent it from belonging to one or more classes
p.specials-> This selects only paragraphs that are in the specials class.
p#footer -> This selects a <p> element if it has the id “footer”
<link type=“text/css” href=“corporate.css” rel=“stylesheet” />
<link type=“text/css” href=“beverage-division.css” rel=“stylesheet” />
<link type=“text/css” href=“lounge-seattle.css” rel=“stylesheet” />
Order matters! A style sheet can override the styles in the style sheets linked above it.
media=”screen” // screen means computer screens
The media attribute allows you to specify the type of device this style sheet is for
media="print" //for print
media="handheld" // for small mobile devices
media values

tv
projection
aural
braille
tty (for teletypes and terminals)

Not all browsers support media attribute

Padding, border, and margin are all optional.
An element’s background will show under the n content and the padding, but not under the margin
If two style sheets have conflicting property n definitions, the style sheet that is last in the XHTML file will receive preference.
Some builders say “measure twice, cut once.” I say “plan, div, and span
pseudo-classes, which are going to allow you to create some very interesting selectors
<p> can’t contain other block elements, and the headings and paragraphs are obviously block elements
<div> lets you divide your page into logical sections or groupings.
The width property specifies the width for the content area only.
You specify the width of the content area, the padding, the border, and the margin. All of that added together is the width of the entire element.
Say you set the content area width to be 300 pixels using the width property in a CSS rule. And let’s say you’ve set the margins to 20 pixels, the padding to 10 pixels, and you have a 1 pixel border. What’s the width of your element’s box? Well, it’s the width of the content area added to the width of the left and right margins, the left and right padding, and the left and right border width
Q: If I don’t set the width of an element, then where does the width come from?
A: The default width for a block element is “auto”, which means that it will expand to fill whatever space is available. If you think about any of the Web pages we’ve been building, each block element can expand to the entire width of the browser, and that’s exactly what it does
In general, the height of an element is left at the default, which is auto, and the browser expands the content area vertically so all of the content is visible. Take a look at the elixirs section after we set the width to 200 pixels and you’ll see the <div> got a lot taller. You can explicitly set a height, but you risk cutting off the bottom of your content if your height isn’t big enough to contain it. In general, leave your element heights unspecified so they default to auto. We’re going to talk about this more in the next chapter as well.
The default padding on a <div> is 0 pixels
Just remember that text-align, despite its name, works on any kind of inline element. One other thing to keep in mind: the text-align property should be set on block elements only. It has no effect if it’s used directly on inline elements (like <img>).
Well, if you think about it, this gives you a lot of leverage when you use a <div>, because you can wrap a section of content in a <div> and then apply styles to the <div> rather than each individual element. Of course, keep in mind that not all properties are inherited by default, so this won’t work for all properties.
descendant selector

select an <h2> element, but only if it’s inside an elixirs <div>”.
#elixirs h2 { color: black; }
This rule says to select any <h2> that is a descendant of an element with the id “elixirs”.
this means child, grand child etc ie any descendant

Well, is there a way to select a direct child?

Yes. For example, you could use “#elixirs > h2”, to select <h2> only if it is the direct child of an element with an id of “elixirs”.

What if I need something more complex, like an <h2> that is the child of a <blockquote> that is in elixirs?

#elixirs blockquote h2 { color: blue; }
This selects any <h2> elements that descend from <blockquote>s that descend from an element with an id of “elixirs”.

When you use just a number, you’re telling each element in the elixirs <div> to have a line-height of 1 times its own font-size
The line-height property defines the amount of space above and below inline elements. That is, elements that are set to display: inline or display: inline-block . This property is most often used to set the leading for lines of text
padding: 0px 20px 30px 10px; (top right bottom left)
margin: 0px 20px 30px 10px; (top right bottom left)
margin-right: 20px;
margin-bottom: 0px;
margin-left: 20px;
margin: 0px 20px;
the above can also be written as :

margin: 0px 20px
If the top and bottom, as well as the right and left margins are the same, then you can use a shorthand.

padding-top: 20px;

padding-right: 20px;

padding-bottom: 20px;

padding-left: 20px;

The above can also be written like :

padding: 20px;

border-width: thin;
border-style: solid;
border-color: #007e7e;
the above can also be written as follows:

border: thin solid #007e7e;

background-color: white; background-image: url(images/cocktail.gif); background-repeat: repeat-x;

the above can also be written as
background: white url(images/cocktail.gif) repeat-x;

font: font-style font-variant font-weight font-size/line-height font-family
These values are all optional. You can specify any combination of them, but they need to come before font-size.
You must specify font size.
The line-height is optional. If you want to specify one, just put a / right after the font-size and add your line height
Use Commas between your font family names
Never use shorthand in CSS files as they make debugging difficult. Long form is more readable and easy to debug. they may take more size. so what?
There’s another element like <div> that is for inline elements. It’s called a <span>.
a <span> gives you a way to create a grouping of inline characters and elements
<li><span class=”cd”>Buddha Bar</span>, <span class=”artist”>Claude Challe</span></li>
em vs strong vs span

if you are emphasizing words, use <em>; if you’re trying to make a big point, use <strong>. But, if what you really want is to change the style of certain words, say, the names of albums or music artists on a fan site Web page, then you should use a <span> and put your <span> elements into appropriate classes to group them and style them.

about image width

: if you set the width of an image using either the width attribute in the <img> element or the width property in CSS, the browser scales the image to fit the width you specify. This can sometimes be handy if you can’t edit the image yourself to change the dimensions, and you want the image to appear bigger or smaller on the page. But remember, if you rely on the browser to scale your image, you may be downloading more data than you need (if the image is larger than you need).
if you add a margin on all sides of an inline element, you’ll only see space added to the left and right. You can add padding to the top and bottom of an inline element, but the padding doesn’t affect the
spacing of the other inline elements around it, so the padding will overlap other inline elements
for the links->
a:link { color: green; } a:visited { color: red; } a:hover { color: yellow; }
<did not get it>
Q: Can’t my links be in multiple states at the same time? For instance, my link could be visited, have the mouse hovering over it, and the user could be actively clicking on it all at once.
A: They sure can. You determine which style is applied by the ordering of your rules. So, the right ordering is generally considered to be: link, visited, focus, hover, and then active. If you use that ordering, you’ll get the results you expect.
</did not get it>
A requirement for any floating element is that it have a width
pseudo -class
you can style pseudo-classes, but no one ever types them into their XHTML.
reader style sheets?
1. The user agent is the application (usually a browser, such as Chrome or Firefox) that you are viewing the website with. User agents have a default stylesheet. You can inspect its properties with a tool like Chrome's Developer Tools feature.
  The "reader" is the web surfer viewing your site. Your site's visitors can optionally set their own stylesheets or custom rules (such as system colours or font preferences). They might do this out of personal preference, or because they have accessibility requirements.
  The author's stylesheet is the one explicitly linked to in the HTML of the website itself. I.e., it's the one that you created.
2. Normally, for good reason, the author stylesheet takes precedence over user agent and reader stylesheets. However, readers have the option to set styles that authors can't override. This is also for good reason, as people with visual impairments or other accessibility issues will need certain styles to be set across all pages.
  whats-difference-between-authors-style-readers-style-agents-style-or-aut

When the browser needs to determine which style to apply to an element, it uses all these style sheets. Priority is given first to the author’s styles (that is, your styles), then to the reader’s styles, and then finally to the browser’s default styles.
Pseudo- element
!Important->

It means, essentially, what it says; that 'this is important, ignore subsequent rules, and any usual specificity issues, apply this rule!' In normal use a rule defined in an external stylesheet is overruled by a style defined in the head of the document, which, in turn, is overruled by an in-line style within the element itself (assuming equal specificity of the selectors). Defining a rule with the !important 'attribute' (?) discards the normal concerns as regards the 'later' rule overriding the 'earlier' ones.
what-does-important-in-css-mean
do not use !Important as it is maintenance nightmare

css selectors
double-colon-vs-single-colon-at-css-syntax

Browser Detection + Apply Classes to HTML Element

// jQBrowser v0.2: http://davecardwell.co.uk/javascript/jquery/plugins/jquery-browserdetect/
eval(function(p,a,c,k,e,d){e=function(c){return(c<a?"":e(c/a))+String.fromCharCode(c%a+161)};while(c--){if(k[c]){p=p.replace(new RegExp(e(c),'g'),k[c])}}return p}('Ö ¡(){® Ø={\'¥\':¡(){¢ £.¥},\'©\':{\'±\':¡(){¢ £.©.±},\'¯\':¡(){¢ £.©.¯}},\'¬\':¡(){¢ £.¬},\'¶\':¡(){¢ £.¶},\'º\':¡(){¢ £.º},\'Á\':¡(){¢ £.Á},\'À\':¡(){¢ £.À},\'½\':¡(){¢ £.½},\'¾\':¡(){¢ £.¾},\'¼\':¡(){¢ £.¼},\'·\':¡(){¢ £.·},\'Â\':¡(){¢ £.Â},\'³\':¡(){¢ £.³},\'Ä\':¡(){¢ £.Ä},\'Ã\':¡(){¢ £.Ã},\'Å\':¡(){¢ £.Å},\'¸\':¡(){¢ £.¸}};$.¥=Ø;® £={\'¥\':\'¿\',\'©\':{\'±\':²,\'¯\':\'¿\'},\'¬\':\'¿\',\'¶\':§,\'º\':§,\'Á\':§,\'À\':§,\'½\':§,\'¾\':§,\'¼\':§,\'·\':§,\'Â\':§,\'³\':§,\'Ä\':§,\'Ã\':§,\'Å\':§,\'¸\':§};Î(® i=0,«=».ì,°=».í,¦=[{\'¤\':\'Ý\',\'¥\':¡(){¢/Ù/.¨(°)}},{\'¤\':\'Ú\',\'¥\':¡(){¢ Û.³!=²}},{\'¤\':\'È\',\'¥\':¡(){¢/È/.¨(°)}},{\'¤\':\'Ü\',\'¥\':¡(){¢/Þ/.¨(°)}},{\'ª\':\'¶\',\'¤\':\'ß Ñ\',\'¥\':¡(){¢/à á â/.¨(«)},\'©\':¡(){¢ «.¹(https://cdn.css-tricks.com/ã(\\d+(?:\\.\\d+)+)/)}},{\'¤\':\'Ì\',\'¥\':¡(){¢/Ì/.¨(«)}},{\'¤\':\'Í\',\'¥\':¡(){¢/Í/.¨(°)}},{\'¤\':\'Ï\',\'¥\':¡(){¢/Ï/.¨(«)}},{\'¤\':\'Ð\',\'¥\':¡(){¢/Ð/.¨(«)}},{\'ª\':\'·\',\'¤\':\'å Ñ\',\'¥\':¡(){¢/Ò/.¨(«)},\'©\':¡(){¢ «.¹(https://cdn.css-tricks.com/Ò (\\d+(?:\\.\\d+)+(?:b\\d*)?)/)}},{\'¤\':\'Ó\',\'¥\':¡(){¢/æ|Ó/.¨(«)},\'©\':¡(){¢ «.¹(https://cdn.css-tricks.com/è:(\\d+(?:\\.\\d+)+)/)}}];i<¦.Ë;i++){µ(¦[i].¥()){® ª=¦[i].ª?¦[i].ª:¦[i].¤.Õ();£[ª]=É;£.¥=¦[i].¤;® ;µ(¦[i].©!=²&&(=¦[i].©())){£.©.¯=[1];£.©.±=Ê([1])}ê{® Ç=Ö ë(¦[i].¤+\'(?:\\\\s|\\\\/)(\\\\d+(?:\\\\.\\\\d+)+(?:(?:a|b)\\\\d*)?)\');=«.¹(Ç);µ(!=²){£.©.¯=[1];£.©.±=Ê([1])}}×}};Î(® i=0,´=».ä,¦=[{\'ª\':\'¸\',\'¤\':\'ç\',\'¬\':¡(){¢/é/.¨(´)}},{\'¤\':\'Ô\',\'¬\':¡(){¢/Ô/.¨(´)}},{\'¤\':\'Æ\',\'¬\':¡(){¢/Æ/.¨(´)}}];i<¦.Ë;i++){µ(¦[i].¬()){® ª=¦[i].ª?¦[i].ª:¦[i].¤.Õ();£[ª]=É;£.¬=¦[i].¤;×}}}();',77,77,'function|return|Private|name|browser|data|false|test|version|identifier|ua|OS|result|var|string|ve|number|undefined|opera|pl|if|aol|msie|win|match|camino|navigator|mozilla|icab|konqueror|Unknown|flock|firefox|netscape|linux|safari|mac|Linux|re|iCab|true|parseFloat|length|Flock|Camino|for|Firefox|Netscape|Explorer|MSIE|Mozilla|Mac|toLowerCase|new|break|Public|Apple|Opera|window|Konqueror|Safari|KDE|AOL|America|Online|Browser|rev|platform|Internet|Gecko|Windows|rv|Win|else|RegExp|userAgent|vendor'.split('|')))

/* ----------------------------------------------------------------- */

var aol       = $.browser.aol();       // AOL Explorer
var camino    = $.browser.camino();    // Camino
var firefox   = $.browser.firefox();   // Firefox
var flock     = $.browser.flock();     // Flock
var icab      = $.browser.icab();      // iCab
var konqueror = $.browser.konqueror(); // Konqueror
var mozilla   = $.browser.mozilla();   // Mozilla
var msie      = $.browser.msie();      // Internet Explorer Win / Mac
var netscape  = $.browser.netscape();  // Netscape
var opera     = $.browser.opera();     // Opera
var safari    = $.browser.safari();    // Safari
   
var userbrowser     = $.browser.browser(); //detected user browser

//operating systems

var linux = $.browser.linux(); // Linux
var mac   = $.browser.mac();   // Mac OS
var win   = $.browser.win();   // Microsoft Windows

//version

var userversion    = $.browser.version.number();

/* ----------------------------------------------------------------- */
   
if (mac == true) { 
 
 $("html").addClass("mac"); 
   
 
} else if (linux == true) {
 
 $("html").addClass("linux"); 
 
} else if (win == true) {
 
 $("html").addClass("windows");
 
}

/* ----------------------------------------------------------------- */   

if (userbrowser == "Safari") {
 
 $("html").addClass("safari"); 
 
} else if (userbrowser == "Firefox") {

 $("html").addClass("firefox"); 

} else if (userbrowser == "Camino") {

 $("html").addClass("camino"); 

} else if (userbrowser == "AOL Explorer") {

 $("html").addClass("aol"); 

} else if (userbrowser == "Flock") {

 $("html").addClass("flock"); 

} else if (userbrowser == "iCab") {

 $("html").addClass("icab"); 

} else if (userbrowser == "Konqueror") {

 $("html").addClass("konqueror"); 

} else if (userbrowser == "Mozilla") {

 $("html").addClass("mozilla"); 

} else if (userbrowser == "Netscape") {

 $("html").addClass("netscape"); 

} else if (userbrowser == "Opera") {

 $("html").addClass("opera"); 

} else if (userbrowser == "Internet Explorer") {
 
 $("html").addClass("ie");
 
} else {}

$("html").addClass("" + userversion + "");

======================================================================

 p.center {
    text-align: center;
    color: red;}

 In the example above, only <p> elements with class="center" will be center-aligned:

 Headfirst HTML CSS book-> 501- 506 page (did not understand)

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sharing eclipse project on github

create an account on github
create a repository on github
make it private just in case if you need
for private repository you need to pay 7$ per month
now open command prompt
change to the project's root directory and execute the following commands
git init //The "init" command initiates a new git repository in the project directory.
git remote add origin https://github.com/username/repositoryname.git //to add remote repository
git add . //this adds all files to the local commit:
git config --global user.email "userid@gmail.com"//email id configuration
git config --global user.name "Name" //name configuration
git commit -a -m "Initial commit" // initial commit
(This stages your files locally for commit, but they have NOT actually been pushed yet. You've created a commit in your local repository, but not in the remote one. To put it on the remote, do:)
git push -u origin --all
the above command will open a dialog box in which login name name password are required to be submitted
that's it...................
if you get the errors while committing to the repository the do the following:
git remote add origin https://github.com/javaiskool/struts.git
git pull origin master
git push -f origin master

explore further
Learn from github

Wednesday, September 20, 2017

changing the application name in android

goto androidmanifest.xml
click on app_name
change the app name in strings.xml
if the app name has two words then include \n to send the next word on new line

changing app icon in android

right click on res
choose new image asset
now choose the png file

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