Why java is object oriented?
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Does garbage collection occur in permanent generation space in jvm?
What is the use of hashmap in java?
What is the difference between the paint() and repaint() methods?
What are the loops in java?
How we can run a jar file through command prompt in java?
can we add two numbers without using arthematic operators? if possible how?
Explain the difference between runnable and callable interface in java?
why the primitive data type have classes?
What is the difference between the synchronized() & static synchronized()?
Is it necessary for the port addresses to be unique? Explain with reason.
What is functional interface in javatpoint?
How many types of classes are there in java?