What’s a deadlock?
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Name and explain the types of ways which are used to pass arguments in any function in java.
Why do we override tostring method in java?
What are different types of states exist for a thread?
Why cant we define System.out.println() inside a class directly?
Can private class be inherited in java?
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?
C and C++ has constructors and distructors, why does Java does not have distructors?
How is hashset defined in java?
What are packages in java?
How can we make copy of a java object?
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 does .equals do in java?