Why is whitespace important?
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Why local variables are stored in stack?
Which One is optimal to choose ? Syncronized hash map or Hash table with single thread model? How can a hash map syncronized with out using syncrozed blocks in programm?
Can we use return in constructor?
What is considered an anti pattern?
What is nullpointerexception?
What are the drawbacks of reflection?
What is JVM and is it platform independent?
What is a nested structure?
when we create singleton design then we create private constructtor..so how JVM take private constructor to make object..but it's private..
How are Observer and Observable used?
What is the difference between replace and replace all?
we have two threads..both the threads are reading the data.. is there any need of synchronization there?...justify it?