File类的基本操作之RandomAccessFile写入操作
时间:2014-05-08 15:42:28
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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(); } }
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