What is null in java?
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When does an object becomes eligible for garbage collection in java?
What is equlas() and hashcode() contract in java? Where does it used?
What is difference between fileinputstream and filereader in java?
Which access specifier can be used with class ?
what is platform native code
Can java list contain duplicates?
Which oo concept is achieved by using overloading and overriding?
What isan abstract class and when do you use it?
How many bytes are there?
Why wait(),notify(),notifyAll() methods defined in Object class althought we are using in only threads.
Explain creating threads by extending thread class ?
Is there any difference between synchronized methods and synchronized statements?