What is the first argument of the String array in main method? »
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The String array is empty. It does not have any element. This is unlike C/C++ where the first element by default is the program name.
Category: JAVA Interview Questions
What if I do not provide the String array as the argument to the method? »
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Program compiles but throws a runtime error “NoSuchMethodError”.
What if I write static public void instead of public static void? »
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Program compiles and runs properly.
What if the static modifier is removed from the signature of the main method? »
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Program compiles. But at runtime throws an error “NoSuchMethodError”.
What if the main method is declared as private? »
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The program compiles properly but at runtime it will give “Main method not public.” message.
What is the purpose of garbage collection? »
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The purpose of garbage collection is to identify and discard objects that are no longer needed by a program so that their resources may be reclaimed and reused.
How are this and super used? »
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this is used to refer to the current object instance. super is used to refer to the variables and methods of the superclass of the current object instance.
