Java-Beispiel – Dateien im angegebenen Verzeichnis suchen

/*
 author by w3cschool.cc
 Main.java
 */import java.io.File;public class Main {
   public static void main(String[] argv) 
   throws Exception {
      File dir = new File("../java");
      String[] children = dir.list();
      if (children == null) {
         System.out.println("该目录不存在");
      }
      else {
         for (int i = 0; i < children.length; i++) {
            String filename = children[i];
            System.out.println(filename);
         }
      }
   }}

Car.
classFileUtil.class
FileUtil.java
HelloWorld.class
HelloWorld.java
HelloWorldDebug.class
HelloWorldDebug.java
……