Java开发网 - 编程出现错误帮忙看下~(非法的表达式开始)

Topic: 编程出现错误帮忙看下~(非法的表达式开始)

1.编程出现错误帮忙看下~(非法的表达式开始)

Posted by: talentfly
Posted on: 2006-06-15 10:47


import java.io.*;
import java.util.*;
 public class NewChose 
{

  public static void main(String[] args) 
  {   
      static ArrayList al=new ArrayList();
    File f=new File("c:\\temp\\ch21");
    NewChose.vistAllDirsAndFiles(f);
    public static void visitAllDirsAndFiles(File dir)
      {
      
      for(dir.isDirectory())
      {
        String[] children=dir.list();
        int len=children.length();
        for(int i=0;i<len;i++)
        {
          visitAllDirsAndFiles(new File(dir, children[i]));
        }
      }
      else
      {
        String name=dir.getName();
        String sub=name.substring(name.length()-3,name.length());
        if(sub.equals("txt"))
        {
          al.add(dir);
        }
      }
      }  
    System.out.println(al.toString());
    
  }
}

C:\javalianxi\NewFile\NewChose.java:8: 非法的表达式开始
static ArrayList al=new ArrayList();
^
C:\javalianxi\NewFile\NewChose.java:11: 非法的表达式开始
public static void visitAllDirsAndFiles(File dir)
^
2 错误
请各位多多关照~~~

2.Re:编程出现错误帮忙看下~~ [Re: talentfly]	Copy to clipboard
Posted by: lisliefor Posted on: 2006-06-15 11:43 21行那个“else”上面对应的if 呢？

3.Re:编程出现错误帮忙看下~~ [Re: lisliefor]	Copy to clipboard
Posted by: zcjl Posted on: 2006-06-15 12:20 太多错误了……几乎就没有一处对的

4.Re:编程出现错误帮忙看下~~ [Re: talentfly]	Copy to clipboard
Posted by: talentfly Posted on: 2006-06-15 14:31 啊，谢谢各位提点~小弟太菜了~希望别见笑

5.Re:编程出现错误帮忙看下~~ [Re: talentfly]

Copy to clipboard

Posted by: Skybus
Posted on: 2006-06-15 15:50

import java.io.*;
import java.util.*;

public class NewChoose {
  static ArrayList al = new ArrayList();

  public static void main(String[] args) {

    File f = new File("c:\\temp\\ch21");
    NewChoose.visitAllDirsAndFiles(f);

    System.out.println(al.toString());

  }

  public static void visitAllDirsAndFiles(File dir) {

    if (dir.isDirectory()) {
      String[] children = dir.list();

      int len = children.length;

      for (int i = 0; i < len; i++) {
        visitAllDirsAndFiles(new File(dir, children[i]));
      }
    } else {
      String name = dir.getName();
      String sub = name.substring(name.length() - 3, name.length());
      if (sub.equals("txt")) {
        al.add(dir);
      }
    }
  }
}

许多常识性错误，不再一一指出，自己对照着检查一下！

Topic: 编程出现错误 帮忙看下~(非法的表达式开始)

Topic: 编程出现错误帮忙看下~(非法的表达式开始)