Following a test-driven en development (TDD) approach. consider first this JUnit

Question

Following a test-driven en development (TDD) approach. consider first this JUnit test trogment: final IntPair new DefaultIntPair (3, 5): final IntPairq-new DefaultIntPair assertTrue (p. firstO3): assertTrue (p. second O 5): assertEquals (11 (3, 511, p. toString O) assertTrue (p. equals(p)): assertFalse (p. equals (q)): assertFalse (q. equals (p)): assertFalse (p. equals (null)); assertTrue (p. equals (q. reverse O)): ineer the IntPair interface in a way that is consistent with the test shown above.Leave out any methods already provided by the class lava. lana.0biest. a) 1.5 Your first job is to reverse-eng

Explanation / Answer

Please find the code below.

CODE

======================

public class DefaultIntPair {

   private int first, second;

   public DefaultIntPair(int first, int second) {

       this.first = first;

       this.second = second;

   }

  

   public int first() {

       return first;

   }

  

   public int second() {

       return second;

   }

   @Override

   public String toString() {

       return "<" + first + ", " + second + ">";

   }

  

   public DefaultIntPair reverse() {

       return new DefaultIntPair(second, first);

   }

   @Override

   public boolean equals(Object obj) {

       DefaultIntPair pair = (DefaultIntPair) obj;

       return first == pair.first() && second == pair.second();

   }

}

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