不能用数据库 大侠们我是菜鸟 初学这个程序 能说最简单的办法么？？ 用记事本写的 是从dos命令下运行的
if(input.hasNext()==true){
String user = input.next();
}
System.out.print("密码:");
if(input.hasNextInt()==true){
int passWord = input.nextInt();
}
else{
System.out.print("请重新输入:");
}
System.out.println("\n注册成功，请记好您的会员卡号");
cardNumber = (int)(Math.random()*(max-min))+min;
System.out.println("用户名"+"\t密码"+"\t会员卡号");
System.out.println("user"+"\t"+"passWord"+"\t"+cardNumber);
break;
Scanner input = new Scanner(System.in);
System.out.println("请输入用户名：");
String username = input.next();
System.out.println("请输入密码：");
String password = input.next();
try {
FileWriter fw = new FileWriter("d:/text.txt", false);
BufferedWriter writer = new BufferedWriter(fw);
StringBuffer sb = new StringBuffer();
sb.append("用户名：").append(username).append(" ").append("密码：")
.append(password);
writer.write(sb.toString());
writer.close();
fw.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
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前台页面
<input name="username"></input>
<input name="password"></input>
*******************************************
后台得到
String username = request.getParameter("username");
String password= request.getParameter("password");
session.setAttribute("username",username);
session.setAttribute("password",password);
*******************************************
以后想用从session中取得就行
session.getAttribute("username");
参考资料：session资料
public class test {
public static void main(String[] args) {
Scanner s = new Scanner(System.in);
System.out.print("输入用户名：");
String username = s.next();
System.out.print("输入密码：");
String password = s.next();
System.out.println(username);
System.out.println(password);
}
}本回答被网友采纳
