GUI编程之Swing
package com.yeyue.lesson04;
import javax.swing.*;
import java.awt.*;
public class JFrameDemo {
//init() ;初始化
public void init(){
JFrame frame = new JFrame("这是一个JFrame窗口");
frame.setVisible(true);
frame.setBounds(100,100,200,200);
frame.setBackground(Color.cyan);
//设置文字
JLabel label = new JLabel("欢迎来到哈哈哈哈哈");
frame.add(label);
//关闭事件
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
//建立一个窗口
new JFrameDemo().init();
}
}
标签居中
package com.yeyue.lesson04;
import javax.swing.*;
import java.awt.*;
public class JFrameDemo02 {
public static void main(String[] args) {
new MyJFrame2().init();
}
}
class MyJFrame2 extends JFrame{
public void init(){
this.setBounds(10,10,200,300);
this.setVisible(true);
//设置文字
JLabel label = new JLabel("欢迎来到");
this.add(label);
//让标签居中
label.setHorizontalAlignment(SwingConstants.CENTER);
//获得一个容器
Container container = this.getContentPane();
container.setBackground(Color.YELLOW);
}
}
弹窗
JDialog，用来被弹出，默认就有关闭事件
package com.yeyue.lesson04;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
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 container = this.getContentPane();
//绝对布局
container.setLayout(null);
//按钮
JButton button = new JButton("点击弹出一个对话窗");//创建
button.setBounds(30,30,200,50);
//点击这个按钮的时候弹出一个弹窗
button.addActionListener(new ActionListener() {
标签
label
new JLabel()
图标ICON
package com.yeyue.lesson04;
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(){};
public IconDemo(int width,int height){
this.width = width;
this.height = height;
}
public void init(){
IconDemo iconDemo = new IconDemo(15,15);
//图标放在标签上，也可以在按钮上
JLabel label = new JLabel("icontest",iconDemo,SwingConstants.CENTER);
Container container = getContentPane();
container.add(label);
this.setVisible(true);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new IconDemo().init();
}
图片ICON
package com.yeyue.lesson04;
import javax.swing.*;
import java.awt.*;
import java.net.URL;
public class ImageIconDemo extends JFrame {
//获取图片的地址
public ImageIconDemo(){
JLabel label = new JLabel("ImageIcon");
URL url = ImageIconDemo.class.getResource("003.jpeg");
ImageIcon imageIcon = new ImageIcon(url);
label.setIcon(imageIcon);
label.setHorizontalAlignment(SwingConstants.CENTER);
Container container = getContentPane();
container.add(label);
setBounds(100,100,200,200);
setVisible(true);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new ImageIconDemo();
}
}
面板
package com.yeyue.lesson05;
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)); //后边的参数是间距
JPanel panel1 = new JPanel(new GridLayout(1,3));
JPanel panel2 = new JPanel(new GridLayout(1,2));
JPanel panel3 = new JPanel(new GridLayout(2,1));
JPanel panel4 = new JPanel(new GridLayout(3,2));
panel1.add(new JButton("1"));
panel1.add(new JButton("1"));
panel1.add(new JButton("1"));
panel2.add(new JButton("2"));
panel2.add(new JButton("2"));
panel3.add(new JButton("3"));
panel3.add(new JButton("3"));
panel4.add(new JButton("4"));
panel4.add(new JButton("4"));
panel4.add(new JButton("4"));
panel4.add(new JButton("4"));
panel4.add(new JButton("4"));
panel4.add(new JButton("4"));
container.add(panel1);
container.add(panel2);
container.add(panel3);
container.add(panel4);
this.setVisible(true);
this.setSize(400,400);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new JPanelDemo();
}
}
JScroll
package com.yeyue.lesson05;
import javax.swing.*;
import java.awt.*;
public class JScrollDemo extends JFrame {
public JScrollDemo(){
Container container = this.getContentPane();
//文本域
JTextArea textArea = new JTextArea(20,50);
textArea.setText("你好啊，我的朋友");
//Scroll面板
JScrollPane jScrollPane = new JScrollPane(textArea);
container.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();
}
}
按钮
图片按钮
package com.yeyue.lesson05;
import javax.swing.*;
import java.awt.*;
import java.net.URL;
public class JBottonDemo01 extends JFrame {
public JBottonDemo01(){
Container container = this.getContentPane();
URL url = JBottonDemo01.class.getResource("003.jpeg");
ImageIcon icon = new ImageIcon(url);
JButton button = new JButton();
button.setIcon(icon);
button.setToolTipText("图片按钮");
container.add(button);
this.setVisible(true);
this.setSize(500,500);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new JBottonDemo01();
}
}
单选按钮
package com.yeyue.lesson05;
import javax.swing.*;
import java.awt.*;
import java.net.URL;
public class JButtonDemo02 extends JFrame {
public JButtonDemo02(){
Container container = this.getContentPane();
//单选框
JRadioButton radioButton1 = new JRadioButton("radioButton1");
JRadioButton radioButton2 = new JRadioButton("radioButton2");
JRadioButton radioButton3 = new JRadioButton("radioButton3");
//由于单选框只能选一个，分组
ButtonGroup group = new ButtonGroup();
group.add(radioButton1);
group.add(radioButton2);
group.add(radioButton3);
container.add(radioButton1,BorderLayout.CENTER);
container.add(radioButton2,BorderLayout.NORTH);
container.add(radioButton3,BorderLayout.SOUTH);
this.setVisible(true);
this.setSize(500,500);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new JButtonDemo02();
}
}
复选按钮
package com.yeyue.lesson05;
import javax.swing.*;
import java.awt.*;
import java.net.URL;
public class JButtonDemo03 extends JFrame {
public JButtonDemo03(){
Container container = this.getContentPane();
//多选框
JCheckBox checkBox01 = new JCheckBox("checkBox01");
JCheckBox checkBox02 = new JCheckBox("checkBox02");
JCheckBox checkBox03 = new JCheckBox("checkBox03");
container.add(checkBox01,BorderLayout.CENTER);
container.add(checkBox02,BorderLayout.NORTH);
container.add(checkBox03,BorderLayout.SOUTH);
this.setVisible(true);
this.setSize(500,500);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new JButtonDemo03();
}
}
列表
下拉框
package com.yeyue.lesson06;
import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
public class TestComboboxDemo01 extends JFrame {
public TestComboboxDemo01(){
Container container = this.getContentPane();
JComboBox status = new JComboBox();
status.addItem("null");
status.addItem("正在上映");
status.addItem("已下架");
status.addItem("即将上映");
container.add(status);
this.setVisible(true);
this.setSize(300,300);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new TestComboboxDemo01();
}
}
列表框
package com.yeyue.lesson06;
import javax.swing.*;
import java.awt.*;
import java.util.Vector;
public class TestComboboxDemo02 extends JFrame {
public TestComboboxDemo02() {
Container container = this.getContentPane();
//生成列表的内容
//String[] contents = {"1","2","3"};
Vector contents = new Vector();
//列表中需要放入内容
JList jlist = new JList(contents);
contents.add("你好");
contents.add("啊");
contents.add("朋友");
container.add(jlist);
this.setVisible(true);
this.setSize(300, 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，显示信息，一般是动态扩容
-
文本框
-
文本框
package com.yeyue.lesson06;
import javax.swing.*;
import java.awt.*;
public class TestTextDemo01 extends JFrame {
public TestTextDemo01(){
Container container = this.getContentPane();
JTextField textField1 = new JTextField("hello");
JTextField textField2 = new JTextField("world",20);
container.add(textField1,BorderLayout.NORTH);
container.add(textField2,BorderLayout.SOUTH);
this.setVisible(true);
this.setSize(300,300);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new TestTextDemo01();
}
} -
密码框
package com.yeyue.lesson06;
import javax.swing.*;
import java.awt.*;
public class TestTextDemo01 extends JFrame {
public TestTextDemo01(){
Container container = this.getContentPane();
JPasswordField passwordField = new JPasswordField();
passwordField.setEchoChar('*');
container.add(passwordField);
this.setVisible(true);
this.setSize(300,300);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new TestTextDemo01();
}
} -
package com.yeyue.lesson05;
import javax.swing.*;
import java.awt.*;
public class JScrollDemo extends JFrame {
public JScrollDemo(){
Container container = this.getContentPane();
//文本域
JTextArea textArea = new JTextArea(20,50);
textArea.setText("你好啊，我的朋友");
//Scroll面板
JScrollPane jScrollPane = new JScrollPane(textArea);
container.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();
}
}
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