Spring MVC validation

1. spring boot starter web dependency already includes hibernate validator dependency.
2.  https://www.journaldev.com/2668/spring-validation-example-mvc-validator
3. http://technicalstack.com/form-validation-part-4-using-annotation-pattern-past-max-etc/
4. https://stackoverflow.com/questions/3813195/regular-expression-for-indian-mobile-numbers
5. mobile no validation
6. birthdate validation for correct range which dependes on gender
7. email validation
8. https://docs.oracle.com/javase/tutorial/essential/regex/intro.html
9. 
   

java 9 features

1. https://docs.oracle.com/javase/9/whatsnew/toc.htm#JSNEW-GUID-5B808B2F-E891-43CD-BF6E-78787E547071

java version release history

1. https://en.wikipedia.org/wiki/Java_version_history

blogging guideline

1. https://docs.google.com/document/d/1T3Mtemue8I8KfHobcBPCwEDUgI_V180e0xjqZVZlDVE/edit
2. https://docs.google.com/document/d/1L-TjM1cP8biT6mIWvH5fYaFHtWyZytzQoqrJ92WqK1A/edit 
3. https://docs.google.com/document/d/15EpG0P5VLBpUH-bGypfS-uBk83rSEj8jeoR9lXJMdS8/edit
4. 
   

showing the newly created page on blogger

1. pages
2. new page
3. publish the page
4. Layout
5. cross column
6. edit 
7. select the newly created page
8. choose save

git error

1. https://stackoverflow.com/questions/38611124/git-commit-not-possible-there-are-no-staged-files
2. 
   

solving programming problem speedily

1. remember God
2. pranayam
3. write down the summary of the problem
4. split the problem into milestones
5. achieve one milestone at a time
6. note down the sample input and output
7. use white plain paper for dry run
8. use pencil and rubber for dry run
9. use meaningful variable names
10. write down what should happen on each milestone or event
11. dont exceed time limit
12. always check or test the code for compile time error and run time error and prescribed time limit for compilation
13. never give up till last moment
14. results dont matter but efforts do
15. note down the lessons you learnt and your shortcomings
16. work on your weakness
17. https://www.quora.com/What-is-the-mathematical-background-necessary-for-competitive-programming
18. https://www.quora.com/What-are-some-must-know-topics-in-discrete-math-and-probability-for-competitive-programming
19.