randomfiledemo.java

来自「java经典10例子」· Java 代码 · 共 23 行

import java.io.*;

public class RandomFileDemo{  
	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","rw");
     		
     		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();
     	}catch (IOException e) {   
			System.out.println("File access error: "+e);
		}  
	} 
}