public static int subtractExact(int num1, int num2)

// Java program to illustrate the
// java.lang.StrictMath.subtractExact()
 
import java.lang.StrictMath;
 
class Geeks {
 
    // driver code
    public static void main(String args[])
    {
 
        // Get the int values
        // for which the difference is required
        int num1 = 76761;
        int num2 = 99;
        int num3 = 786616;
 
        // Get difference between
        // num1 and num2
        System.out.println("Difference of " + num1
                           + " and " + num2 + " = "
                           + StrictMath
                                 .subtractExact(num1, num2));
 
        // Get difference between
        // num1 and num3
        System.out.println("Difference of " + num1
                           + " and " + num3 + " = "
                           + StrictMath
                                 .subtractExact(num1, num3));
    }
}

Difference of 76761 and 99 = 76662
Difference of 76761 and 786616 = -709855

public static long subtractExact(long num1, long num2)

// Java program to illustrate the
// java.lang.StrictMath.subtractExact()
 
import java.lang.StrictMath;
 
class Geeks {
 
    // driver code
    public static void main(String args[])
    {
 
        // Get the long values
        // for which the difference is required
        long num1 = -76342561;
        long num2 = 949;
        long num3 = 78326616;
 
        // Get difference between
        // num1 and num2
        System.out.println("Difference of " + num1
                           + " and " + num2 + " = "
                           + StrictMath
                                 .subtractExact(num1, num2));
 
        // Get difference between
        // num1 and num3
        System.out.println("Difference of " + num1
                           + " and " + num3 + " = "
                           + StrictMath
                                 .subtractExact(num1, num3));
    }
}

Difference of -76342561 and 949 = -76343510
Difference of -76342561 and 78326616 = -154669177