第六次Java作业

class Check{
    public boolean validate(String name,String password){
        if(name.equals("lizhe")
                &&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.validate(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("输入的参数不正确，系统退出！");
            System.out.println("格式:java demo2 用户名 密码");
            System.exit(1);
        }
    }
}
public class demo2{
    public static void main(String args[]){
        Operate oper= new Operate(args);
        System.out.println(oper.login());
    }

}