filenamefilterbyending.java

利用JAVA编写的群体机器人局部通讯完成一定得队形控制

/*
 * FilenameFilterByEnding.java
 */

package	EDU.gatech.cc.is.util;

import java.lang.System;
import java.lang.String;
import java.io.FilenameFilter;
import java.io.File;

/**
 * Create a FilenameFilter that only accepts names whose ending matches
 * a given value.
 * <P>
 * Copyright (c)2000 Tucker Balch
 *
 * @author Tucker Balch
 * @version $Revision: 1.2 $
 */

public class FilenameFilterByEnding implements FilenameFilter
        {
	private	String	ending;
	/**
	 * Create a FilenameFilterByEnding object.
	 * @param e String, the ending to match.
	 */
        public FilenameFilterByEnding(String e)
                {
		ending = e;
                }

	/**
	 * Check a filename to see if it meets critera.
	 * @param d File, the file.
	 * @param name String, the name of the file.
	 * @return true if ending matches, false otherwise.
	 */
        public boolean accept(File d, String name)
                {
		if (name == null)
			return(false);
		else if (name.length() < ending.length())
			return(false);
		else
			{
			String nameending = name.substring(name.length() 
				- ending.length(), name.length());
			if (nameending.equals(ending))
				return(true);
			else
				return(false);
			}
                }


	/**
	 * Test the filter.
	 */
	public static void main(String[] args)
		{
		File d = null;
		FilenameFilter joe = new FilenameFilterByEnding(".dsc");
		if (joe.accept(d,"eric.dsc")) System.out.println("OK");
		else System.out.println("FAIL");
		if (joe.accept(d,".dscasd")) System.out.println("FAIL");
		else System.out.println("OK");
		if (joe.accept(d,"dsc")) System.out.println("FAIL");
		else System.out.println("OK");
		}

        }