enlist some features of jdk.
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Why is stringbuffer called mutable?
What is use of static in java?
Why cant we define System.out.println() inside a class directly?
What is arrays fill in java?
What is the difference between static and non-static variables in java programming?
Is vector ordered in java?
What is the difference between inner class and nested class?
Why does java have two ways to create child threads?
What is the properties class?
when we create singleton design then we create private constructtor..so how JVM take private constructor to make object..but it's private..
What is the purpose of abstract class?
Same common question what is Map,Set,HashMap,List????