📄 7-9.txt
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<html>
<head>
<title>random access files</title>
<meta http-equiv="Content-Type" content="text/html;charset=gb2312">
</head>
<%@ page import="java.io.*" %>
<body>
<hr>
<%
//定义一个类
class user{
private String name=new String();
private boolean sex;
private int age;
public user(String a,boolean b,int c){
name=a;
sex=b;
age=c;
}
public String getName(){
return name;
}
public String getSex(){
String tempstring3=new String();
if(sex){
tempstring3="MALE";
}else{
tempstring3="FEMALE";
}
return tempstring3;
}
public String getAge(){
String tempstring4=new String();
tempstring4=tempstring4.valueOf(age);
return tempstring4;
}
public String getOutStr(){
String tempstring5=new String();
tempstring5="name="+getName()+" sex="+getSex()+" age="+getAge();
return tempstring5;
}
}
String tempstring1=new String();
String tempstring2=new String();
File filenew=new File("d:/back/users.txt");
filenew.createNewFile();
RandomAccessFile raf=new RandomAccessFile(filenew,"rw");
user userA=new user("Mike",true,24);
tempstring1=userA.getOutStr();
raf.writeChars(tempstring1);
raf.writeChars("\n");
user userB=new user("Jenny",false,29);
tempstring2=userB.getOutStr();
raf.writeChars(tempstring2);
raf.writeChars("");
out.println("Work compeleted!");
%>
</body>
</html>
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