comparator.java

来自「一个java的LDAP服务器」· Java 代码 · 共 31 行

package org.javaldap.btree;

/*
  File: Comparator.java
 
  Biel School of Engineering, Computer Science Division. 
  Course "Algorithms with Objects in Java" 
  Originally written by Roger Cattin (c) 1997/98
 
  History:
  Date     Who                 What
  Nov97    [e-mail]  Created.
*/

/**
 * Comparator is an interface for any class possessing an ordering
 * comparison method.
**/

public interface Comparator {
	/**
	 * Compare two Objects with respect to ordering. Typical
	 * implementations first cast their arguments to particular
	 * types in order to perform comparison.
	 * @param obj object to be compared with this
	 * @return a negative number if this is less than obj; a
	 * positive number if this is greater than obj; else 0
	**/
	public int compareTo(Object obj);
}