Is singleton thread safe in java?
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Is .net better than java?
Which is faster string or stringbuilder?
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How do you remove an element from an arraylist in java?
A non-static inner class may have object instances that are associated with instances of the class’s outer class. A static inner class does not have any object instances.
when to use abstract class and when to use interface?
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Why null value is used in string?
how system.out.println() works?
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Can we have two main methods in a java class?
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