What is java literals?
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Can we serialize singleton class?
You can create a string object as string str = “abc”; why cant a button object be created as button bt = “abc”;? Explain
what is optional in java 8?
What is the use of inner class?
If an application has multiple classes in it, is it okay to have a main method in more than one class?
How to convert a string to long?
What is the concatenation operator in java?
How many return statement are allowed in a function?
garbate collector(GC)?
Does java support Operator Overloading?
what is the use of clone method? why user cant overwrite in sub class without its proper defination.
What is a lock or purpose of locks in java?