In this section you can learn and practice Aptitude (Questions with Answers) to improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence.
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You can easily solve all kind of questions based on Aptitude by practicing exercise given in this APTITUDE section.
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These are variables declared with in a class, outside any method, with the static keyword.
Singleton class control object creation, limiting the number to one but allowing the flexibility to create more objects if the situation changes.
Yes, save your java file by .java only, compile it by javac .java and run by java yourclassname.
It is empty. But not null.