Can a class have multiple constructors?
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What is the use of set in java?
Can a list be null in java?
Explain inner classes ?
I want to control database connections in my program and want that only one thread should be able to make database connection at a time. How can I implement this logic?
What is Marker interface in java? and what is clone?
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Who found java?
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What is the difference between size and length in java?
How to compare two strings in java program?
What is integer valueof?