why Interface used?
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Suppose if we have variable ' I ' in run method, if I can create one or more thread each thread will occupy a separate copy or same variable will be shared?
What are the main concepts of oops in java?
Wha is the output from system.out.println(“hello”+null); ?
What is a nested structure?
When do we use synchronized blocks and advantages of using synchronized blocks?
How does a try statement determine which catch clause should be used to handle an exception?
Why char array is preferred over string for storing password?
Can we override the static methods?
Explain about the security aspect of java?
When would you use a static class?
What should I import for arraylist in java?
What is a package?