// file:    pair.java
// author:  Robert Keller
// purpose: Very simple immutable Java class, pair of integers
//          Creates a pair of ints; allows getting of components,
//          and getting of max and min.


class pair
{
private int x, y;

pair(int x, int y)                              // constructor
  {
  this.x = x;
  this.y = y;
  }

int getX()
  {
  return x;
  }

int getY()
  {
  return y;
  }

int max()
  {
  return x > y ? x : y;
  }

int min()
  {
  return x < y ? x : y;
  }

public String toString()
  {
  return "(" + x + ", " + y + ")";
  }

static public void main(String[] arg)
  {
  pair a, b;                                    // declare pairs

  a = new pair(3, 5);                           // construct pairs
  b = new pair(-5, 19);

  System.out.println("a = " + a);
  System.out.println("b = " + b);
  System.out.println("a.getX() = " + a.getX());
  System.out.println("b.getY() = " + b.getY());
  System.out.println("a.max() = " + a.max());
  System.out.println("b.min() = " + b.min());
  }

}