Why main method is static in java?
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Is hashmap thread safe?
Which sort is best in java?
Why do we need hashset in java?
How an object is serialized in java?
When should I use stringbuffer?
What is a “stateless” protocol ?
Which collection allows duplicate values in java?
can java object be locked down for exclusive use by a given thread? Or what happens when a thread cannot acquire a lock on an object? : Java thread
What is proper subset?
what is mena by object block any what is the use of that
Explain try and catch keywords in java?
How can we avoid including a header more than once?