import java.io.*;
class FileAccept implements FilenameFilter{
	String str=null;
	FileAccept(String s){
		str="."+s;
}
public boolean accept(File dir,String name){
	return name.endsWith(str);     //endsWith(String)
	
}

}
public class Example7{
	public static void main(String args[]){
		File dir=new File("C:\\Documents and Settings\\user\\My Documents\\bookjava");
		FileAccept AcceptCondition=new FileAccept("java");
		File fileName[]=dir.listFiles(AcceptCondition);
		for(int i=0;i<fileName.length;i++)
			System.out.printf("\n 文件名稱：%s,長度%d",fileName[i].getName(),fileName[i].length());
		boolean boo=fileName[0].delete();
		if(boo)
			System.out.printf("\n 文件：%s 被刪除：",fileName[0].getName());
}
}