Why do we use string?
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can two class in a code be public??if yes then how??
To what value is a variable of the Boolean type automatically initialized?
How do you know if a value is nan?
what is difference between Action messages and Action errors?
What do you mean by ternary operator in java?
what is the difference between object and class
Explain the difference between string, stringbuffer and stringbuilder in java?
Explain notifyall() method of object class ?
How is hashset defined in java?
Is null in java?
I want to persist data of objects for later use. What is the best approach to do so?
Why java is a platform independent? Explain