dirlist.java

中文JAVA编程思想第二版,一本很好的JAVA入门书籍!

//: c11:DirList.java
// From 'Thinking in Java, 2nd ed.' by Bruce Eckel
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
// Displays directory listing.
import java.io.*;
import java.util.*;
import com.bruceeckel.util.*;

public class DirList {
  public static void main(String[] args) {
    File path = new File(".");
    String[] list;
    if(args.length == 0)
      list = path.list();
    else 
      list = path.list(new DirFilter(args[0]));
    Arrays.sort(list,
      new AlphabeticComparator());
    for(int i = 0; i < list.length; i++)
      System.out.println(list[i]);
  }
}

class DirFilter implements FilenameFilter {
  String afn;
  DirFilter(String afn) { this.afn = afn; }
  public boolean accept(File dir, String name) {
    // Strip path information:
    String f = new File(name).getName();
    return f.indexOf(afn) != -1;
  }
} ///:~