What is a wrapper method?
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What does system.gc() and runtime.gc() methods do?
what is the difference between thread and runnable types? : Java thread
Why Static variable required in java?For ex,class A { static int a; int b; } Why static is required?
Why string is popular hashmap key in java?
What is the advantage of preparedstatement over statement?
What is variable length arguments in java?
What is final class?
In a program, initializing an array of 100 KB is throwing an out of memory exception while there is 100 MB of memory available. Why?
what is webservices?
How big is a boolean?
What is re-factoring in software?
What is the major difference between linkedlist and arraylist?