What is the difference between class & object?
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What is the use of using enum to declare a constant?
When you declare a method as abstract method ?
Can we assign integer value to char in java?
how we can make a write-only class in java?
extending thread class or implementing runnable interface. Which is better? : Java thread
What are the access modifiers in java?
What is the use of flag?
How do you declare a variable?
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?
How do you ensure that n threads can access n resources without deadlock?
Does java list allow null?
When should I use singleton?