public class DefaultIntPair implements IntPair { private int firstNum, secondNum; public DefaultIntPair(int firstNum, int secondNum) { this.firstNum = firstNum; this.secondNum = secondNum; } public int first() { return firstNum; } public int second() { return secondNum; } public String toString() { return ""; } public boolean equals(Object o) { if (this == o) return true; if (o == null) return false; DefaultIntPair intPair = (DefaultIntPair) o; return firstNum == intPair.firstNum && secondNum == intPair.secondNum; } public IntPair reverse() { DefaultIntPair reversedPair = new DefaultIntPair(secondNum, firstNum); return reversedPair; } }

d) 1 Redefine pands from the test fragment aboveusing the new generic typesPair and DefaultPair (the generic version of DefaultIntPair). (Do not show the rest of the test codel)