java界面编程源代码 java做界面

用JAVA 编程的源代码

直接定义两个接口学生接口里面定义一个学费java界面编程源代码的变量java界面编程源代码，老师接口里面定义一个工资变量，

eclipse里面可以自动帮你添加相关变量java界面编程源代码的getterhe

setter方法java界面编程源代码的。

相关问答

Q1: 求编写一个超级简单的Java的程序源代码

import java.awt.FlowLayout;

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.JOptionPane;

import javax.swing.JPasswordField;

import javax.swing.JTextField;

public class Login {

public static void main(String args[]) {

LoginFrm frame = new LoginFrm();

}

}

class LoginFrm extends JFrame implements ActionListener{

JLabel nameLabel=new JLabel("用户名java界面编程源代码：");

JLabel pwdLabel=new JLabel("密码：");

JTextField name=new JTextField(10);

JPasswordField password=new JPasswordField(10);

JButton butnSure=new JButton("确定");

JButton butnCancel=new JButton("取消");

public LoginFrm() {

super("登陆");

setBounds(500, 200, 280, 220);

setVisible(true);

setLayout(null);

nameLabel.setBounds(45, 20, 100, 25);

add(nameLabel);

add(name);

name.setBounds(105, 20, 110, 25);

add(pwdLabel);

pwdLabel.setBounds(45, 60, 100, 25);

add(password);

password.setBounds(105, 60, 110, 25);

add(butnSure);

butnSure.setBounds(45, 100, 80, 25);

add(butnCancel);

butnCancel.setBounds(135, 100, 80, 25);

butnSure.addActionListener(this);

butnCancel.addActionListener(this);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

validate();//刷新

}

public void actionPerformed(ActionEvent e) {

if (e.getSource() ==butnSure){

System.out.println("用户名："+name.getText());

System.out.println("密码："+name.getText());

if("admin".equals(name.getText().trim())"123".equals(password.getText().trim())){

this.dispose();

new MainFrm("用户界面",name.getText().trim(),password.getText().trim());

}else {

JOptionPane.showMessageDialog(this, "用户不存在");

}

}else if(e.getSource()==butnCancel){

System.exit(1);

}

}

class MainFrm extends JFrame{

private JLabel info;

public MainFrm(String s,String name,String password) {

super(s);

setBounds(400, 200, 500, 400);

setLayout(new FlowLayout());

info=new JLabel("登陆成功java界面编程源代码，用户名："+name+"java界面编程源代码，密码："+password);

add(info);

setVisible(true);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

validate();

}

}

}

Q2: JAVA中GUI登录界面设计源代码是什么？

import java.awt.BorderLayout;

import java.awt.Container;

import java.awt.FlowLayout;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JPasswordField;

import javax.swing.JTextField;

public class Login {

private JFrame frame = new JFrame("登录");

private Container c = frame.getContentPane();

private JTextField username = new JTextField();

private JPasswordField password = new JPasswordField();

private JButton ok = new JButton("确定");

private JButton cancel = new JButton("取消");

public Login(){

frame.setSize(300,200);

c.setLayout(new BorderLayout());

initFrame();

frame.setVisible(true);

}

private void initFrame() {

//顶部

JPanel titlePanel = new JPanel();

titlePanel.setLayout(new FlowLayout());

titlePanel.add(new JLabel("系统管理员登录"));

c.add(titlePanel,"North");

//中部表单

JPanel fieldPanel = new JPanel();

fieldPanel.setLayout(null);

JLabel l1 = new JLabel("用户名:");

l1.setBounds(50, 20, 50, 20);

JLabel l2 = new JLabel("密 码:");

l2.setBounds(50, 60, 50, 20);

fieldPanel.add(l1);

fieldPanel.add(l2);

username.setBounds(110,20,120,20);

password.setBounds(110,60,120,20);

fieldPanel.add(username);

fieldPanel.add(password);

c.add(fieldPanel,"Center");

//底部按钮

JPanel buttonPanel = new JPanel();

buttonPanel.setLayout(new FlowLayout());

buttonPanel.add(ok);

buttonPanel.add(cancel);

c.add(buttonPanel,"South");

}

public static void main(String[] args){

new Login();

}

}

Q3: 求一java程序，一个界面计算器源代码，跪求大神，有注释最好。。

import javax.swing.*;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

public class GUI extends JFrame implements ActionListener {//实现监听接口

JTextField field = new JTextField(15);

double num1=0,num2;

char op;

public GUI(){

setLayout(new BorderLayout(10,10));

JPanel p1 = new JPanel(new FlowLayout(FlowLayout.CENTER));

p1.add(new JLabel("计算框java界面编程源代码："));

p1.add(field);

add(p1,BorderLayout.NORTH);

JPanel p2 = new JPanel(new GridLayout(4,1));

//添加按钮

JButton bt1 = new JButton("1");

JButton bt2 = new JButton("2");

JButton bt3 = new JButton("3");

JButton bt4 = new JButton("4");

JButton bt5 = new JButton("5");

JButton bt6 = new JButton("6");

JButton bt7 = new JButton("7");

JButton bt8 = new JButton("8");

JButton bt9 = new JButton("9");

JButton bt0 = new JButton("0");

JButton btDel = new JButton("Del");

JButton btEqual = new JButton("=");

p2.add(bt1);p2.add(bt2);

p2.add(bt3); p2.add(bt4);

p2.add(bt5); p2.add(bt6);

p2.add(bt7);p2.add(bt8);

p2.add(bt9);p2.add(bt0);

p2.add(btDel);p2.add(btEqual);

add(p2,BorderLayout.CENTER);

JPanel p3 = new JPanel(new GridLayout(0,1));

JButton bta = new JButton("+");

JButton btb = new JButton("-");

JButton btc = new JButton("*");

JButton btd = new JButton("/");

p3.add(bta);p3.add(btb);

p3.add(btc);p3.add(btd);

add(p3,BorderLayout.EAST);

//添加监听器

bt1.addActionListener(this);

bt2.addActionListener(this);

bt3.addActionListener(this);

bt4.addActionListener(this);

bt5.addActionListener(this);

bt6.addActionListener(this);

bt7.addActionListener(this);

bt8.addActionListener(this);

bt9.addActionListener(this);

bt0.addActionListener(this);

bta.addActionListener(this);

btb.addActionListener(this);

btc.addActionListener(this);

btd.addActionListener(this);

btDel.addActionListener(this);

btEqual.addActionListener(this);

}

//事件java界面编程源代码的响应

public void actionPerformed(ActionEvent e){

String str =e.getActionCommand();

String s1 = field.getText();

if(str!="+"str!="-"str!="*"str!="/"str!="="str!="Del"){//为数字按钮时

field.setText(s1+str);

}

else if(str=="Del"){//删除键

field.setText("");

str=null;

}

else if(str=="="){//等号按钮

s1 =field.getText();

String t2 ="";

int flag=0;//标记操作符的位置

if(s1.indexOf("+")!=-1)

flag = s1.indexOf("+");

if(s1.indexOf("-")!=-1)

flag = s1.indexOf("-");

if(s1.indexOf("*")!=-1)

flag = s1.indexOf("*");

if(s1.indexOf("/")!=-1)

flag = s1.indexOf("/");

for(int i=flag+1;is1.length();i++)

{

t2+=s1.charAt(i);//获得第二个操作数

}

num2 =Double.parseDouble(t2);//将第二个操作数转换为double

switch(op){

case '+': num1+=num2;break;

case '-': num1-=num2;break;

case '*': num1*=num2;break;

case '/': num1/=num2;break;

}

field.setText(s1+"="+num1+"");//显示在文本框里

}

else{//加减乘除符号

num1 = Double.parseDouble(field.getText());

field.setText(s1+str);

op = str.charAt(0);//获得操作符

}

}

public static void main(String[] args){

GUI frame = new GUI();

frame.setTitle("简易计算器");

frame.setLocationRelativeTo(null);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setSize(300,200);

//frame.pack();

frame.setVisible(true);

}

}

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