What is linkedlist in java?
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Explain the differences between public, private, protected and static?
What is the difference between overriding and overloading in OOPS.
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7) Suppose there is Student class like class student { int age; string name; } We want to store these objects in a HashMap. Do we need to override any methods in Student class? If any which ones and why? what if i just override equals or just hashcode? what will be the results in both the cases?
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Explain the difference between runnable and callable interface in java?
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Core Java 
