今天学习java io中File类下的 RandomAccessfile，欢迎留言讨论，其他知识看api

package org.mark.randomaccessfile;

import java.io.File;
import java.io.RandomAccessFile;

/**
 * 写入操作 
 */
public class RandomAccessfileDemo1 {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception {
		// TODO Auto-generated method stub
		File file = new File("d:" +File.separator+"test.txt");//指定要操作的文件
		RandomAccessFile rdf = null; //声明randomaccessfile类
		rdf = new RandomAccessFile(file, "rw");//打开以便读取和写入。如果该文件尚不存在，则尝试创建该文件。
		String name = null;
		int age = 0;
		
		name = "zhangsan";
		age = 30 ;
		rdf.writeBytes(name);
		rdf.writeInt(age);
		
		name = "lisi    ";
		age = 31 ;
		rdf.writeBytes(name);
		rdf.writeInt(age);
		
		name = "wangwu  ";
		age = 32 ;
		rdf.writeBytes(name);
		rdf.writeInt(age);
		
		
		rdf.close();
	}

}