Answer / Sonali Parasar

In Java, a 'return code' or 'return value' is the value that a method returns after its execution to the point where it was called. This value can be used to indicate whether the method has completed successfully or encountered an error.

String is an immutable object. Then how can the following code be justified. String s1 = ?ABC?; String s1 = s1+?XYZ?; s.o.p(s1); The output is ABCXYZ, which is the value of s1 ?

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