dirlistonly.java~1~

来自「java2参考大全上的例子的源码和自己的理解.」· JAVA~1~ 代码 · 共 40 行

package filenamefilter接口;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

// Directory of .HTML files.
import java.io.*;

class OnlyExt
    implements FilenameFilter {
  String ext;

  public OnlyExt(String ext) {
    this.ext = "." + ext;
  }

  public boolean accept(File dir, String name) {
    return name.endsWith(ext);
  }
}

class DirListOnly {
  public static void main(String args[]) {
    String dirname = "java";
    File f1 = new File(dirname);
    FilenameFilter only = new OnlyExt("txt");
    String s[] = f1.list(only);

    for (int i = 0; i < s.length; i++) {
      System.out.println(s[i]);
    }
  }
}