What is a key in java?
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What is prime number in java?
How many methods does cloneable interface contains?
Is char * a string?
Which One is optimal to choose ? Syncronized hash map or Hash table with single thread model? How can a hash map syncronized with out using syncrozed blocks in programm?
You're given a Boolean 2D matrix, can you find the number of islands?
Can we have two methods in a class with the same name?
Why we need to serialize the object
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How can a class be accessed, If no access modifiers are declared?
What is the exact difference in between unicast and multicast object? Where we will use?
What super () does in java?
What is a databasemetadata?
Can we use catch statement for checked exceptions?