extensionfilefilter.java

用Java编写的一个可下载MP3

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package org.serain.shmily.player;

import java.io.File;
import java.util.ArrayList;
import javax.swing.filechooser.FileFilter;

/**
 *
 * @author Administrator
 */
public class ExtensionFileFilter extends FileFilter {
    private String description="";
    private ArrayList<String> extensions=new ArrayList<String>();
    public void addExtension(String extension){
        if(!extension.startsWith("."))
            extension="."+extension;
        extensions.add(extension.toLowerCase());
    }
    public void setDescription(String aDescription){
        description=aDescription;
    }

    @Override
    public boolean accept(File f) {
        String name=f.getName().toLowerCase();
        for(String extension:extensions)
            if(name.endsWith(extension))
                return true;
        return false;
    }

    @Override
    public String getDescription() {
        return description;
    }
    

}