import java.util.*;
import com.bruceeckel.util.*;
class E_13_2 implements Comparable
{
   private String s1;
   private String s2;
   E_13_2(){
   }
   E_13_2(String s1,String s2){
   this.s1=s1;
   this.s2=s2;
    }
 public boolean equals(Object o){
   return (o instanceof E_13_2)&&(s2==((E_13_2)o).s2);
 }
  public int compareTo(Object obj)
  {
      String s = ((E_13_2)obj).s1;
      return s1.compareTo(s);
    }
  public String toString(){
 return "[s1:"+s1+"<>s2:"+s2+"]";
 }
  public static Arrays2.RandStringGenerator gen=
  new Arrays2.RandStringGenerator(8);
  public static Generator generator(){
 return new Generator(){
  public Object next(){
   return new E_13_2((String)gen.next(),(String)gen.next());
   }
  };
 }
}
public class E13Test
{
  public static void main(String args[]){
      E_13_2 e = new E_13_2();
 E_13_2[] e13 = new E_13_2[10];
 Arrays2.fill(e13,E_13_2.generator());
 Arrays2.print("before sort() =>",e13);
 int i=Arrays.binarySearch(e13,e13[4]);
 System.out.println("binarySearch=>"+i);
 Arrays.sort(e13);
 Arrays2.print("after sort() =>",e13);
}
}