Is null false in java?

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List the features of java programming language.

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Why spring singleton is not thread safe?

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for(i=0;i<100;i++) { int i=method();//method returns no's from 1 to 10; /* insert some stmts which can give output like no.of times numbers(1-10) returned. (for example if it returns 2 then i want output how many times 2 returned) like that i want output for no's 1 - 10 how many times each no returned. */ }

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when asub class inherits a super class and overrides a public method of super class in sub class(public method in super class). why these methods needs to be public in sub class. (otherwise compile time error).

3 Answers  

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What is a functional interface?

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What is the difference between array and arraylist? what is the difference between arraylist and linkedlist?

8 Answers   EDS, Matrix,

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Can we extend a class with private constructor?

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What is a modifier?

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what are three ways in which a thread can enter the waiting state? Or what are different ways in which a thread can enter the waiting state? : Java thread

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Is there any sort function in java?

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Is string is a keyword in java?

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