// 简答的系统登陆,固定的name、password.
public class HelloWorldapp {
public static void main(String args[]){
Operate oper = new Operate(args);
System.out.print(oper.Login());
}
}
class Check{
public boolean valldate(String name,String password){
if(name.equals("lixinghua") && password.equals("mldn")){
return true;
}
else{
return false;
}
}
}
class Operate{
private String info[];
public Operate(String info[]){
this.info = info;
}
public String Login(){
Check check = new Check();
this.isExit();
String name = this.info[0];
String password = this.info[1];
String str = null;
if(check.valldate(name, password)){
str = "欢迎" + name + "光临!";
}
else{
str = "错误的用户名和密码";
}
return str;
}
public void isExit(){
if(this.info.length != 2){
System.out.println("输入的参数格式不对,系统退出!");
System.out.println("格式 java LoginDemo02");
System.exit(1);
}
}
}