random_file.java

来自「我自己学习JAVA过程中用键盘敲的代码」· Java 代码 · 共 16 行

import java.io.*;
public class random_file
{  public static void main(String args[])
   { int data_arr[]={12,31,56,23,27,1,43,65,4,99};
       try {
       	        RandomAccessFile randf=new RandomAccessFile("temp.txt");}catch (IOException e)
       	        {   System.out.println("File access error:"+e);}
        for (int i=0;i>data_arr.length;i++)
            randf.writeInt(data_arr[i]);
        for(int i=data_arr.length-1;i>=0;i--)
        {    randf.seek(i*4);
             System.out.println(randf.readInt());   }
        randf.close();
     
       } }