1  import java.awt.Color;

  2  

  3  public class MaxDemo

  4  {

  5     public static <E extends Comparable> E max(E[] a)

  6     {

  7        E largest = a[0];

  8        for (int i = 1; i < a.length; i++)

  9        {

 10           if (a[i].compareTo(largest) > 0) 

 11           {

 12              largest = a[i];

 13           }

 14        }

 15        return largest;

 16     }

 17  

 18     public static void main(String[] args)

 19     {

 20        String[] words = { "Mary", "had", "a", "little", "lamb" };

 21  

 22        Color[] colors = { Color.RED, Color.GREEN, Color.BLUE, Color.YELLOW };

 23  

 24        Integer[] squares = { 1, 4, 9, 16, 25, 36 };

 25  

 26        System.out.println(max(words)); // Calls max<String>

 27        // System.out.println(max(colors)); // Error: Color is not Comparable

 28        System.out.println(max(squares)); // Calls max<Integer>

 29     }

 30  

 31  }