Is string a data type in java?
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How will you convert an ArrayList to Arrays?
What are the disadvantages of object oriented programming?
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 is the use of hashmap in java?
What is string immutability?
What is preflight request?
What are different types of inner classes ?
In a container there are 5 components. I want to display all the component names, how will you do that?
Explain the difference between call by refrence and call by value?
What is the function of java?
What is the format of Inner Class after it compiled?
Which of these methods belong to Thread & Object class? join, yield, sleep, wait, notify