How does Java handle integer overflows and underflows

How does Java handle integer overflows and underflows ?

Answer :

  • Overflows: Once it reached to its maximum value when adding value, It goes back to minimum value and continues from there.
  • Underflow: Once it reached to its minimum value when subtract value from it,┬áIt will go back to the maximum value and continues from there

Please see example below:

public class UnderflowOverflowTest {

    public static void main(String[] args) {

	int i = Integer.MAX_VALUE;

	System.out.println("int max value: " + i);
	System.out.println("Add 1 to int max value");
	System.out.println("int max value will "
		+ "overflow: " + (i + 1) + "\n");

	int j = Integer.MIN_VALUE;

	System.out.println("int min value: " + j);
	System.out.println("Subtract 1 to int min value");
	System.out.println("int min value will "
		+ "underflow: " + (j - 1));

    }

}

 

Output:

How does Java handle integer overflows and underflows

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