What is nullpointerexception?
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What is singleton pattern?
Can we overload the constructors?
Can a static block throw exception?
What class allows you to read objects directly from a stream?
How to create an interface?
What is a copy constructor in java?
Is java util regex pattern thread safe?
Can singleton class be inherited in java?
What is the difference between a local variable and an instance variable?
What is the default size of set in java?
using equals method overriding which objects are compared?i.e same class objects or other class objects?Explain me.
What is purpose of applet programming?