mytype.java

Java编程思想这本书很好

//: c11:MyType.java
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
import java.util.*;

public class MyType implements Comparable {
  private int i;
  public MyType(int n) { i = n; }
  public boolean equals(Object o) {
    return (o instanceof MyType) && (i == ((MyType)o).i);
  }
  public int hashCode() { return i; }
  public String toString() { return i + " "; }
  public int compareTo(Object o) {
    int i2 = ((MyType)o).i;
    return (i2 < i ? -1 : (i2 == i ? 0 : 1));
  }
} ///:~