java密码登录简单代码 java密码登录简单代码怎么写

JAVA中密码登陆代码怎么写看一下apache httpclientjava密码登录简单代码的包java密码登录简单代码,现成java密码登录简单代码的代码
用JAVA编一个用户登录界面,用户必须输入账号密码才能进入简单代码如下,原本想用弹窗的 , 懒得写了:
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
public class dengru extends JFrame implements ActionListener {
private static final long serialVersionUID = 1L;
private Container c = null;
private JButton jb = null;
public dengru() {
this.setLayout(new FlowLayout());
jb = new JButton("登入");
jb.addActionListener(this);
this.add(jb);
this.setSize(500, 400);
this.setVisible(true);
this.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
}
public static void main(String[] args) {
newdengru();
}
@Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == jb) {
JFrame jf=new JFrame();
c = jf.getContentPane();
c.setLayout(new GridLayout(3,2,2,2));
JLabel jl1 = new JLabel("用户名:");
JLabel jl2 = new JLabel("密码:");
JTextField jtf1 = new JTextField();
JTextField jtf2 = new JTextField();
jtf1.setSize(200, 40);
jtf2.setSize(200, 40);
c.add(jl1);
c.add(jtf1);
c.add(jl2);
c.add(jtf2);
c.add(new JButton("登入"));
jf.setVisible(true);
jf.setSize(300, 100);
jf.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
}
}
}
Java,编写登录界面,用户账号密码,简单的,详细点import javax.swing.*;
import java.awt.*;
public class denglu extends JFrame{
JTextField jTextField ;
JPasswordField jPasswordField;
JLabel jLabel1,jLabel2;
JPanel jp1,jp2,jp3;
JButton jb1,jb2;
public denglu(){
jTextField = new JTextField(12);
jPasswordField = new JPasswordField(13);
jLabel1 = new JLabel("用户名");
jLabel2 = new JLabel("密码");
jb1 = new JButton("确认");
jb2 = new JButton("取消");
jp1 = new JPanel();
jp2 = new JPanel();
jp3 = new JPanel();
this.setLayout(new GridLayout(3,1));
jp1.add(jLabel1);
【java密码登录简单代码 java密码登录简单代码怎么写】jp1.add(jTextField);
jp2.add(jLabel2);
jp2.add(jPasswordField);
jp3.add(jb1);
jp3.add(jb2);
this.add(jp1);
this.add(jp2);
this.add(jp3);
this.setSize(300, 200);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);
this.setTitle("登陆");
}
}
模拟一个简单的用户登陆程序,判断登录的用户名和密码是否正确,输出登录判断结果,用java怎么写?package test;\x0d\x0aimport java.util.Scanner;\x0d\x0apublic class TestLogin {\x0d\x0aprivate static final String USERNAME = "Tom";//此处定义用户名\x0d\x0aprivate static final String PASSWORD = "123";//定义密码\x0d\x0apublic static void main(String[] args) {\x0d\x0aScanner sc = new Scanner(System.in);\x0d\x0aSystem.out.print("请输入您的用户名:");\x0d\x0aString username_in = sc.next();\x0d\x0aSystem.out.print("请输入您的密码:");\x0d\x0aString password_in = sc.next();\x0d\x0aif(username_in.equals(USERNAME)password_in.equals(PASSWORD)){\x0d\x0aSystem.out.println("登录成功");\x0d\x0a}else{\x0d\x0aSystem.out.println("用户名或密码错误");\x0d\x0a}\x0d\x0a}\x0d\x0a} \x0d\x0a这是从控制台输入的最简单的方法 。
用java程序编写一个简单的登录界面怎么写?程序如下:
mport java.awt.HeadlessException;

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