What is thread safe singleton?
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What are the basics of core java?
What do you know about java?
What is the smallest package in Java API?
I want to re-reach and use an object once it has been garbage collected. How it's possible?
Why Static variable required in java?For ex,class A { static int a; int b; } Why static is required?
What is Servlet?
Is zero a natural number?
When do we use hashset over treeset?
Can we create our own daemon thread?
What is difference between local variable and global variable?
What is null data type?
do I need to use synchronized on setvalue(int)? : Java thread