JAVA IO － 刪除特定擴展名的文件

想要刪除帶有特定擴展名的文件須要實現FileNameFilter接口，請看代碼.

import java.io.File;
import java.io.FilenameFilter;


public class FileDeleteWithExt {
    public static void main(String args[]){
    	String FILE_DIR = "c:\\work\\hello";
    	File dir = new File(FILE_DIR);
    	String files[] = dir.list(new ExtFileNameFilter("txt"));
    	for (String file : files){
    	   	String temp = new StringBuffer(FILE_DIR)
    	                      .append(File.separator)
    	                      .append(file).toString();
    	    	File fileDelete = new File(temp);
    	    	boolean isdeleted = fileDelete.delete();
    	    	System.out.println("file : " + temp + " is deleted : " + isdeleted);
    	     }
    }
}

class ExtFileNameFilter implements FilenameFilter {

	@Override
	public boolean accept(File dir, String name) {
		// TODO Auto-generated method stub
		if(name.endsWith(ext))
			return true;
		return false;
	}
	
	public ExtFileNameFilter(String ext){
		this.ext = ext;
	}
	
	String ext;
	
}