GUI编程
GUI介绍AWT
1.AWT介绍：2.组件和容器
1.frame2.回顾封装3.面板Panel4.布局管理器5.练习6.监听事件7.多个按钮，共享一个事件8.输入框 TextField 监听9.简易计算器，组合+内部类回顾复习!10.画笔 Paint11.鼠标监听12.窗口监听13.键盘监听 Swing
1.窗口、面板2.弹窗 Dialog3.标签4.面板5.按钮6.列表7.文本框 总结
1.AWT2.Swing
GUI编程 GUI介绍- GUI的核心技术：Swing AWT
- 因为界面不美观需要jre环境
- 可以写出自己心中想要的一些小工具工作时候，也可能需要维护到swing界面，概率极小!了解MVC架构，了解监听
- 包含了很多类和接口!GUI !元素:窗口，按钮，文本框java.awt
import java.awt.*;
//GUI的第一个界面
public class Testframe {
public static void main(String[] args) {
//frame,JDK,看源码！
frame frame = new frame("我的第一个Java图像界面窗口");
//需要设置可见性
frame.setVisible(true);
//设置窗口大小
frame.setSize(400,400);
//设置背景颜色 Color
frame.setBackground(new Color(8, 229, 211));
//弹出的初始位置
frame.setLocation(200,200);
//设置大小固定
frame.setResizable(false);
}
}
2.回顾封装
import java.awt.*;
public class Testframe2 {
public static void main(String[] args) {
//展示多个窗口 new
Myframe myframe1 = new Myframe(100, 100, 200, 200, Color.blue);
Myframe myframe2 = new Myframe(300, 100, 200, 200, Color.yellow);
Myframe myframe3 = new Myframe(100, 300, 200, 200, Color.red);
Myframe myframe4 = new Myframe(300, 300, 200, 200, Color.magenta);
}
}
class Myframe extends frame{
static int id=0;//可能存在多个窗口，外面需要一个计数器
public Myframe(int x,int y,int w,int h,Color color){
super("Myframe+"+(++id));
setBackground(color);
setBounds(x,y,w,h);
//需要设置可见性
setVisible(true);
}
}
3.面板Panel
解决了关闭事件
import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
//Panel 可以看成是一个空间，但不能单独存在
public class TestPanel {
public static void main(String[] args) {
frame frame = new frame();
Panel panel = new Panel();
//设置布局
frame.setLayout(null);
//坐标
frame.setBounds(300,300,500,500);
frame.setBackground(new Color(40,161,35));
//Panel 设置坐标，相对于frame
panel.setBounds(50,50,400,400);;
panel.setBackground(new Color(193,15,60));
//frame.add(panel)
frame.add(panel);
frame.setVisible(true);
//监听事件，监听窗口关闭事件，System.exit(0)
frame.addWindowListener(new WindowAdapter() {
//窗口点击关闭的时候需要做的事情
@Override
public void windowClosing(WindowEvent e) {
//结束程序
System.exit(0);
}
});
}
}
4.布局管理器
流式布局
import java.awt.*;
public class TestFlowLayout {
public static void main(String[] args) {
frame frame = new frame();
//组件-按钮
Button button1 = new Button("Button1");
Button button2 = new Button("Button1");
Button button3 = new Button("Button1");
//设置为流式布局
//frame.setLayout(new FlowLayout(FlowLayout.LEFT));往左
//frame.setLayout(new FlowLayout(FlowLayout.RIGHT));往右
frame.setLayout(new FlowLayout());
frame.setSize(200,200);
//把按钮添加上去
frame.add(button1);
frame.add(button2);
frame.add(button3);
frame.setVisible(true);
}
}
东西南北中
import java.awt.*;
public class TestBorderLayout {
public static void main(String[] args) {
frame frame = new frame("TestBorderLayout");
Button east = new Button("East");
Button west = new Button("West");
Button south = new Button("South");
Button north = new Button("North");
Button center = new Button("Center");
frame.add(east,BorderLayout.EAST);
frame.add(west,BorderLayout.WEST);
frame.add(south,BorderLayout.SOUTH);
frame.add(north,BorderLayout.NORTH);
frame.add(center,BorderLayout.CENTER);
frame.setSize(200,200);
frame.setVisible(true);
}
}
表格布局 Grid
import java.awt.*;
public class TestGridLayout {
public static void main(String[] args) {
frame frame = new frame("TestGridLayout");
Button btn1 = new Button("btn1");
Button btn2 = new Button("btn2");
Button btn3 = new Button("btn3");
Button btn4 = new Button("btn4");
Button btn5 = new Button("btn5");
Button btn6 = new Button("btn6");
frame.setLayout(new GridLayout(3,2));
frame.add(btn1);
frame.add(btn2);
frame.add(btn3);
frame.add(btn4);
frame.add(btn5);
frame.add(btn6);
frame.pack();//java函数
frame.setVisible(true);
}
}
5.练习
[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-DtOiM3KR-1646570739858)(G:JavaSETypora笔记imgGUI练习1.png)]
import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class Practice {
public static void main(String[] args) {
frame frame = new frame("练习");
Panel p1=new Panel();
Panel p2=new Panel();
Button btn1 = new Button("btn1");
Button btn2 = new Button("btn2");
Button btn3 = new Button("btn3");
Button btn4 = new Button("btn4");
Button btn5 = new Button("btn5");
Button btn6 = new Button("btn6");
Button btn7 = new Button("btn7");
Button btn8 = new Button("btn8");
Button btn9 = new Button("btn9");
Button btn10 = new Button("btn10");
frame.setLayout(new GridLayout(2,3));
frame.add(btn1);
frame.add(p1);
frame.add(btn4);
frame.add(btn5);
frame.add(p2);
frame.add(btn10);
p1.setLayout(new GridLayout(2,1));
p1.add(btn2);
p1.add(btn3);
p2.setLayout(new GridLayout(2,2));
p2.add(btn6);
p2.add(btn7);
p2.add(btn8);
p2.add(btn9);
frame.setSize(200,200);
frame.setVisible(true);
//监听事件，监听窗口关闭事件，System.exit(0)
frame.addWindowListener(new WindowAdapter() {
//窗口点击关闭的时候需要做的事情
@Override
public void windowClosing(WindowEvent e) {
//结束程序
System.exit(0);
}
});
}
}
6.监听事件
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class TextActionEvent {
public static void main(String[] args) {
//按下按钮，触发一些事件
frame frame = new frame();
Button button = new Button();
//因为，addActionListener()需要一个 ActionListener，所以我们需要构造一个 ActionListener
MyActionListener myActionListener = new MyActionListener();
button.addActionListener(myActionListener);
frame.add(button,BorderLayout.CENTER);
frame.pack();
windowClos(frame);//关闭窗口
frame.setVisible(true);
}
//关闭窗体的事件
private static void windowClos(frame frame){
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
}
}
//监听事件
class MyActionListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
System.out.println("aaa");
}
}
7.多个按钮，共享一个事件
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class TestActionTwo {
public static void main(String[] args) {
//两个按纽，实现同一个监呀
//开始 停止
frame frame = new frame();
Button button1 = new Button("start");//开始
Button button2 = new Button("stop");//停止
//可以显示的定义触发会返回的命令，如果不显示定义，则会走默认的值!
// 可以多个按钮只写一个监听类
button2.setActionCommand("stop-2");//停止-2
MyMonitor myMonitor = new MyMonitor();
button1.addActionListener(myMonitor);
button2.addActionListener(myMonitor);
frame.add(button1,BorderLayout.NORTH);
frame.add(button2,BorderLayout.SOUTH);
frame.pack();
windowClos(frame);
frame.setVisible(true);
}
//关闭窗体的事件
private static void windowClos(frame frame){
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
}
}
//监听事件
class MyMonitor implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
//e.getActionCommand() 获取按钮信息
System.out.println("msg==>"+e.getActionCommand());
if (e.getActionCommand().equals("start")){
}else if (e.getActionCommand().equals("stop-2")){
}
}
}
8.输入框 TextField 监听
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class TestText01 {
public static void main(String[] args) {
//启动！
new Myframe();
}
}
class Myframe extends frame{
public Myframe(){
TextField textField = new TextField();
add(textField);
//监听这个文本框输入的文字
MyActionListener2 myActionListener2 = new MyActionListener2();
//按下enter就会触发这个输入框的事件
textField.addActionListener(myActionListener2);
//设置替换编码
textField.setEchoChar('*');
setVisible(true);
pack();
}
}
class MyActionListener2 implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
TextField field = (TextField)e.getSource();//获得一些资源,返回的一个对象
System.out.println(field.getText());//获得输入框的文本
field.setText("");//清空
}
}
9.简易计算器，组合+内部类回顾复习!
oop原则：组合，大于继承
目前代码：
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class TestCalc {
public static void main(String[] args) {
new Calculator();
}
}
//计算器类
class Calculator extends frame{
public Calculator(){
//3 个文本框
TextField num1 = new TextField(10);//字符数
TextField num2 = new TextField(10);//字符数
TextField num3 = new TextField(20);//字符数
//1 个按钮
Button button = new Button("=");
button.addActionListener(new MyCalculatorListener(num1,num2,num3));
//1 个标签
Label label = new Label("+");
//布局
setLayout(new FlowLayout());
add(num1);
add(label);
add(num2);
add(button);
add(num3);
setVisible(true);
pack();
}
}
//监听器类
class MyCalculatorListener implements ActionListener{
//获取三个变量
private TextField num1,num2,num3;
public MyCalculatorListener(TextField num1,TextField num2,TextField num3){
this.num1=num1;
this.num2=num2;
this.num3=num3;
}
@Override
public void actionPerformed(ActionEvent e) {
//1.获得加数和被加数
int n1=Integer.parseInt(num1.getText());
int n2=Integer.parseInt(num2.getText());
//2.将这个值+法运算后，放到第三个框
num3.setText(""+(n1+n2));
//3.清除前两个框
num1.setText("");
num2.setText("");
}
}
优化：完全改造为面向对象写法
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class TestCalc {
public static void main(String[] args) {
new Calculator().loadframe();
}
}
//计算器类
class Calculator extends frame{
//属性
TextField num1,num2,num3;
//方法
public void loadframe(){
//3 个文本框
num1 = new TextField(10);//字符数
num2 = new TextField(10);//字符数
num3 = new TextField(20);//字符数
//1 个按钮
Button button = new Button("=");
//1 个标签
Label label = new Label("+");
button.addActionListener(new MyCalculatorListener(this));
//布局
setLayout(new FlowLayout());
add(num1);
add(label);
add(num2);
add(button);
add(num3);
setVisible(true);
pack();
}
}
//监听器类
class MyCalculatorListener implements ActionListener{
//获取计算器这个对象,在一个类中组合另外一个类;
Calculator calculator=null;
public MyCalculatorListener(Calculator calculator){
this.calculator=calculator;
}
@Override
public void actionPerformed(ActionEvent e) {
//1.获得加数和被加数
int n1=Integer.parseInt(calculator.num1.getText());
int n2=Integer.parseInt(calculator.num2.getText());
//2.将这个值+法运算后，放到第三个框
calculator.num3.setText(""+(n1+n2));
//3.清除前两个框
calculator.num1.setText("");
calculator.num2.setText("");
}
}
优化：内部类
更好的包装
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class TestCalc {
public static void main(String[] args) {
new Calculator().loadframe();
}
}
//计算器类
class Calculator extends frame{
//属性
TextField num1,num2,num3;
//方法
public void loadframe(){
//3 个文本框
num1 = new TextField(10);//字符数
num2 = new TextField(10);//字符数
num3 = new TextField(20);//字符数
//1 个按钮
Button button = new Button("=");
//1 个标签
Label label = new Label("+");
button.addActionListener(new MyCalculatorListener());
//布局
setLayout(new FlowLayout());
add(num1);
add(label);
add(num2);
add(button);
add(num3);
setVisible(true);
pack();
}
//监听器类
//内部类最大的好处，就是可以畅通无阻的访问外部的属性和方法!
private class MyCalculatorListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
//1.获得加数和被加数
int n1=Integer.parseInt(num1.getText());
int n2=Integer.parseInt(num2.getText());
//2.将这个值+法运算后，放到第三个框
num3.setText(""+(n1+n2));
//3.清除前两个框
num1.setText("");
num2.setText("");
}
}
}
10.画笔 Paint
import java.awt.*;
public class TestPanint {
public static void main(String[] args) {
new MyPaint().loadframe();
}
}
class MyPaint extends frame{
public void loadframe(){
setBounds(200,200,600,400);
setVisible(true);
}
//画笔
@Override
public void paint(Graphics g) {
//画笔，需要有颜色，画笔可以画画
//g.setColor(Color.red);
//g.drawOval(100,100,100,100);//空心的圆
g.fillOval(100,100,100,100);//实心的圆
g.fillRect(200,200,200,200);//矩形
//养成习惯，画管用完，将他还原到最初的颜色
}
}
11.鼠标监听
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.Iterator;
//鼠标监听事件
public class TestMouseListener {
public static void main(String[] args) {
new Myframe("画笔");
}
}
//自己的类
class Myframe extends frame{
//画需要画笔，需要监听鼠标当前的位置，需要集合来存储这个点
ArrayList points;
public Myframe(String title){
super(title);
//设置窗体位置和大小
setBounds(200,200,400,300);
//存鼠标点击的点
points=new ArrayList<>();
setVisible(true);
//鼠标监听器，正对这个窗口
this.addMouseListener(new MyMouseListener());
}
@Override
public void paint(Graphics g) {
//画画,监听鼠标的事件
Iterator iterator=points.iterator();
while (iterator.hasNext()){
Point point=(Point) iterator.next();
g.setColor(Color.BLUE);
g.fillOval(point.x,point.y,10,10);
}
}
//添加一个点到界面上
public void addPaint(Point point){
points.add(point);
}
//适配器模式
private class MyMouseListener extends MouseAdapter{
//鼠标 按下，弹起，按住不放
@Override
public void mousePressed(MouseEvent e) {
Myframe frame=(Myframe) e.getSource();
//这个我们点击的时候,就会在界面上产生一个点!画
//这个点就是鼠标的点;
frame.addPaint(new Point(e.getX(),e.getY()));
//每次点击鼠标都需要重新画一遍
frame.repaint();//刷新
}
}
}
12.窗口监听
import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class TestWindow {
public static void main(String[] args) {
new Windowframe();
}
}
class Windowframe extends frame{
public Windowframe(){
setBackground(Color.blue);
setBounds(100,100,200,200);
setVisible(true);
//addWindowListener(new MyWindowListener());
//匿名内部类
this.addWindowListener(new WindowAdapter() {
//关闭窗口
@Override
public void windowClosing(WindowEvent e) {
System.out.println("你点击了X");
System.exit(0);
}
//激活窗口
@Override
public void windowActivated(WindowEvent e) {
//改变标题
Windowframe source=(Windowframe) e.getSource();
source.setTitle("你被激活了");
System.out.println("windowActivated");
}
});
}
}
13.键盘监听
import java.awt.*;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
//键盘监听
public class TestKeyListener {
public static void main(String[] args) {
new Keyframe();
}
}
class Keyframe extends frame{
public Keyframe(){
setBounds(1,2,300,400);
setVisible(true);
this.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
//获得键盘下的键是哪一个,当前的码
int keyCode=e.getKeyCode();//不需需要去记录这个数值,直接使用静态属性VK_xxx
System.out.println(keyCode);
if (keyCode==KeyEvent.VK_UP){
System.out.println("你按下了上键");
}
//根据按下不同操作,产生不同结果;
}
});
}
}
Swing
1.窗口、面板
import javax.swing.*;
import java.awt.*;
public class JframeDemo {
//init() 初始化
public void init(){
//顶级窗口
Jframe jframe = new Jframe("这是一个Jframe窗口");
jframe.setVisible(true);
jframe.setBounds(100,100,200,200);
jframe.setBackground(Color.cyan);
//设置文字 JLabel
JLabel jLabel = new JLabel("欢迎来到Jframe窗口");
jframe.add(jLabel);
//让文本标签居中 设置水平对齐
jLabel.setHorizontalAlignment(SwingConstants.CENTER);
//获得一个容器
Container contentPane = jframe.getContentPane();
contentPane.setBackground(Color.yellow);
//关闭事件
jframe.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
//建立一个窗口
new JframeDemo().init();
}
}
标签居中：
//让文本标签居中 设置水平对齐 jLabel.setHorizontalAlignment(SwingConstants.CENTER);2.弹窗 Dialog
JDialog，用来被弹出，默认就有关闭事件!
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
//主窗口
public class DialogDemo extends Jframe {
public DialogDemo(){
this.setVisible(true);
this.setSize(700,500);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
//Jframe 放东西，容器
Container contentPane = this.getContentPane();
//绝对布局
contentPane.setLayout(null);
//按钮
JButton jButton = new JButton("点击弹出一个对话框");//创建
jButton.setBounds(30,30,200,50);
//点击这个按钮的时候，弹出一个弹窗
jButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
//弹窗
new MyDialogDemo();
}
});
contentPane.add(jButton);
}
public static void main(String[] args) {
new DialogDemo();
}
}
//弹窗的窗口
class MyDialogDemo extends JDialog{
public MyDialogDemo(){
this.setVisible(true);
this.setBounds(100,100,500,500);
//this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
Container contentPane = this.getContentPane();
contentPane.setLayout(null);
contentPane.add(new Label("带你学Java"));
}
}
3.标签
label
new JLabel("xxx");
图标ICON
import javax.swing.*;
import java.awt.*;
//图标,需要实现类，frame继承
public class IconDemo extends Jframe implements Icon {
private int width;
private int height;
public IconDemo(){}//无参构造
//有参构造
public IconDemo(int width, int height){
this.width = width;
this.height = height;
}
public void init(){
IconDemo iconDemo = new IconDemo(15,15);
//图标放在标签，也可以放在按钮上!
JLabel jLabel = new JLabel("icontest",iconDemo,SwingConstants.CENTER);
Container container=getContentPane();
container.add(jLabel);
this.setVisible(true);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new IconDemo().init();
}
@Override
public void paintIcon(Component c, Graphics g, int x, int y) {
g.fillOval(x,y,width,height);
}
@Override
public int getIconWidth() {
return this.width;
}
@Override
public int getIconHeight() {
return this.height;
}
}
图片Icon
import javax.swing.*;
import java.awt.*;
import java.net.URL;
public class ImageIconDemo extends Jframe {
public ImageIconDemo(){
//获取图片的地址
JLabel jLabel = new JLabel("ImageIcon");
URL url=ImageIconDemo.class.getResource("8.png");
ImageIcon imageIcon = new ImageIcon(url);//命名不要冲突了
jLabel.setIcon(imageIcon);
jLabel.setHorizontalAlignment(SwingConstants.CENTER);
Container container=getContentPane();
container.add(jLabel);
setVisible(true);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
setBounds(100,100,200,200);
}
public static void main(String[] args) {
new ImageIconDemo();
}
}
4.面板
JPanel
import javax.swing.*;
import java.awt.*;
public class JPanelDemo extends Jframe {
public JPanelDemo(){
Container container = this.getContentPane();
container.setLayout(new GridLayout(2,1,10,10));//后面的参数的意思,间距
JPanel Panel1 = new JPanel(new GridLayout(1,3));
Panel1.add(new JButton("1"));
Panel1.add(new JButton("1"));
Panel1.add(new JButton("1"));
container.add(Panel1);
container.add(Panel1);
container.add(Panel1);
setVisible(true);
setSize(500,500);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new JPanelDemo();
}
}
JScrollPanel
import javax.swing.*;
import java.awt.*;
public class JScrollDemo extends Jframe {
public JScrollDemo(){
Container contentPane = getContentPane();
//文本域
Jtextarea jtextarea = new Jtextarea(20,50);
jtextarea.setText("欢迎学习java");
//Scroll 面板
JScrollPane jScrollPane = new JScrollPane(jtextarea);
contentPane.add(jScrollPane);
this.setVisible(true);
this.setBounds(100,100,300,350);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new JScrollDemo();
}
}
5.按钮
图片按钮
import javax.swing.*;
import java.awt.*;
import java.net.URL;
public class JButtonDemo01 extends Jframe {
public JButtonDemo01(){
Container contentPane = getContentPane();
//将一个图片变为图标
URL resource=JButtonDemo01.class.getResource("8.png");
Icon icon=new ImageIcon(resource);
//把这个图标放在按钮上
JButton button = new JButton();
button.setIcon(icon);
button.setToolTipText("图片按钮");
//add
contentPane.add(button);
this.setVisible(true);
this.setSize(500,300);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new JButtonDemo01();
}
}
单选按钮
import javax.swing.*;
import java.awt.*;
public class JButtonDemo02 extends Jframe {
public JButtonDemo02(){
Container contentPane = getContentPane();
//单选框
JRadioButton radioButton1 = new JRadioButton("JRadioButton01");
JRadioButton radioButton2 = new JRadioButton("JRadioButton02");
JRadioButton radioButton3 = new JRadioButton("JRadioButton03");
//由于单选框只能选择一个，分组，一个组中只能选择一个
ButtonGroup group = new ButtonGroup();
group.add(radioButton1);
group.add(radioButton2);
group.add(radioButton3);
contentPane.add(radioButton1,BorderLayout.CENTER);
contentPane.add(radioButton2,BorderLayout.NORTH);
contentPane.add(radioButton3,BorderLayout.SOUTH);
this.setVisible(true);
this.setSize(500,300);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new JButtonDemo02();
}
}
复选按钮
import javax.swing.*;
import java.awt.*;
public class JButtonDemo03 extends Jframe {
public JButtonDemo03(){
Container contentPane = getContentPane();
//多选框
JCheckBox checkBox01 = new JCheckBox("checkBox01");
JCheckBox checkBox02 = new JCheckBox("checkBox02");
contentPane.add(checkBox01,BorderLayout.NORTH);
contentPane.add(checkBox02,BorderLayout.SOUTH);
this.setVisible(true);
this.setSize(500,300);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new JButtonDemo03();
}
}
6.列表
下拉框
import javax.swing.*;
import java.awt.*;
public class TestComboboxDemo01 extends Jframe {
public TestComboboxDemo01(){
Container contentPane = getContentPane();
JComboBox jComboBox = new JComboBox();
jComboBox.addItem(null);
jComboBox.addItem("正在热映");
jComboBox.addItem("已下架");
jComboBox.addItem("即将上映");
contentPane.add(jComboBox);
this.setVisible(true);
this.setSize(500,300);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new TestComboboxDemo01();
}
}
列表框
import javax.swing.*;
import java.awt.*;
import java.util.Vector;
public class TestComboboxDemo02 extends Jframe {
public TestComboboxDemo02(){
Container contentPane = getContentPane();
//生成列表的内容
//String[] contents={"1","2","3"};
//动态添加数据
Vector contents = new Vector();
//列表中需要放入内容
JList jList = new JList(contents);
contents.add("张三");
contents.add("李四");
contents.add("王五");
contentPane.add(jList);
this.setVisible(true);
this.setSize(500,300);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new TestComboboxDemo02();
}
}
应用场景
选择地区，或者一些单个选项列表，展示信息，一般是动态扩容! 7.文本框
文本框
import javax.swing.*;
import java.awt.*;
public class TestTextDemo01 extends Jframe {
public TestTextDemo01(){
Container contentPane = getContentPane();
JTextField textField = new JTextField("hello");
JTextField textField2 = new JTextField("world",20);
contentPane.add(textField,BorderLayout.NORTH);
contentPane.add(textField2,BorderLayout.SOUTH);
this.setVisible(true);
this.setSize(500,300);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new TestTextDemo01();
}
}
密码框
import javax.swing.*;
import java.awt.*;
public class TestTextDemo02 extends Jframe {
public TestTextDemo02(){
Container contentPane = getContentPane();
JPasswordField passwordField = new JPasswordField();//*****
passwordField.setEchoChar('*');
contentPane.add(passwordField);
this.setVisible(true);
this.setSize(500,300);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new TestTextDemo02();
}
}
文本域
import javax.swing.*;
import java.awt.*;
public class JScrollDemo extends Jframe {
public JScrollDemo(){
Container contentPane = getContentPane();
//文本域
Jtextarea jtextarea = new Jtextarea(20,50);
jtextarea.setText("欢迎学习java");
//Scroll 面板
JScrollPane jScrollPane = new JScrollPane(jtextarea);
contentPane.add(jScrollPane);
this.setVisible(true);
this.setBounds(100,100,300,350);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new JScrollDemo();
}
}
总结
1.AWT
frame frame = new frame();//构造一个最初不可见的 frame 新实例（）
frame.setVisible(true);//需要设置可见性
frame.setSize(500,400);//设置窗口大小,宽度500，高度400
frame.setBackground(new Color(8, 229, 211));//设置背景颜色 Color
frame.setLocation(200,200);//弹出的初始位置
frame.setResizable(false);//设置大小固定
frame.setBounds(300,300,500,500);//坐标
frame.setLayout(null);//设置窗口固定
frame.pack();//填充
frame.addWindowListener(new WindowAdapter() {});//监听事件，windowClosing监听窗口关闭事件，System.exit(0)
Panel panel = new Panel();//面板
frame.add(panel);//添加面板到窗体里
frame.setLayout(new FlowLayout());//设置为流式布局
// FlowLayout.LEFT往左，FlowLayout.RIGHT往右
frame.add(panel,BorderLayout.CENTER);//东西南北中
// EAST东，WEST西，SOUTH南，NORTH北，CENTER中
frame.setLayout(new GridLayout(2,1));//表格布局，两行一列
Button button = new Button("Button");//组件-按钮
TextField textField = new TextField();//输入框
frame.add(textField);
textField.setEchoChar('*');//设置替换编码
Label label = new Label("+");//1 个标签
//继承重写paint画笔类
//g.fillOval(100,100,100,100);//实心的圆
//g.fillRect(200,200,200,200);//矩形
2.Swing
Jframe jframe = new Jframe("这是一个Jframe窗口");//顶级窗口
JLabel jLabel = new JLabel("欢迎来到Jframe窗口");//设置文字 JLabel
jframe.add(jLabel);//添加
jLabel.setHorizontalAlignment(SwingConstants.CENTER);//让文本标签居中 设置水平对齐
Container contentPane = jframe.getContentPane();//获得一个容器
jframe.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);//关闭事件
//按钮
JButton jButton = new JButton("点击弹出一个对话框");//创建
jButton.addActionListener(new ActionListener() {});//重写actionPerformed点击这个按钮的时候，弹出一个弹窗，//弹窗new一个自建一个继承JDialog类
//单选框
JRadioButton radioButton1 = new JRadioButton("JRadioButton01");
//由于单选框只能选择一个，分组，一个组中只能选择一个
ButtonGroup group = new ButtonGroup();
group.add(radioButton1);
//多选框
JCheckBox checkBox01 = new JCheckBox("checkBox01");
contentPane.add(checkBox01,BorderLayout.NORTH);
//下拉框
JComboBox jComboBox = new JComboBox();
jComboBox.addItem("正在热映");
//列表框
Vector contents = new Vector();
JList jList = new JList(contents);//列表中需要放入内容
contents.add("张三");
//文本框
JTextField textField = new JTextField("hello");
//密码框
JPasswordField passwordField = new JPasswordField();//*****
passwordField.setEchoChar('*');
//文本域
Jtextarea jtextarea = new Jtextarea(20,50);
jtextarea.setText("欢迎学习java");
JScrollPane jScrollPane = new JScrollPane(jtextarea);//Scroll 面板
contentPane.add(jScrollPane);
