Why is string builder not thread safe?
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Which package is always imported by default?
Is the empty set a singleton?
Explain about class in java?
Difference between this() and super() ?
Have you used any version control ? if so explain about it?
what are the rules to use try catch finally?
Which is the class in java?
What are wrapper classes in java?
Difference between process and thread?
What is meant by anonymous class?
Which java.util classes and interfaces support event handling?
What is the use of toarray () in java?