GUI编程

核心技术

AWT

画笔

package com.tmy.lesson03;import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;public class TestPaint01 {public static void main(String[] args) {new MyPaint().loadFrame();}
}
class MyPaint extends Frame{public void loadFrame(){setBounds(500,300,600,450);//setBackground(new Color(247, 246, 235));//setResizable(true);setVisible(true);//监听事件，关闭窗口addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {System.exit(0);}});}//画笔@Overridepublic void paint(Graphics g) {g.setColor(Color.red);g.drawOval(100, 100, 100, 100);//空心圆g.fillOval(200,200,100,100);//实心圆//画笔用完，将他还原到最初颜色g.setColor(Color.black);}}

结果：

鼠标监听（模拟画图工具）

package com.tmy.lesson03;import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.ArrayList;
import java.util.Iterator;public class TestMouseListener {public static void main(String[] args) {new MyMouseListener("画图");}
}
class MyMouseListener extends Frame{//需要画笔，需要监听鼠标当前位置，需要一个集合来存储这个点ArrayList points = null;public MyMouseListener(String title){super(title);setBounds(500,300,600,400);setBackground(Color.white);setVisible(true);//存鼠标的点points = new ArrayList();//鼠标监听事件addMouseListener(new MyMouse());addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {System.exit(0);}});}@Overridepublic void paint(Graphics g) {//画面监听鼠标事件//遍历集合，画出每个点Iterator iterator = points.iterator();while(iterator.hasNext()){Point point = (Point)iterator.next();g.setColor(Color.red);g.fillOval(point.x,point.y,10,10);}}//添加一个点到ArrayList集合的方法public void addPaint(Point point){points.add(point);}//适配器模式（不需要重写MouseListener的所有方法，只重写需要的）private class MyMouse extends MouseAdapter{//鼠标按下@Overridepublic void mousePressed(MouseEvent e) {MyMouseListener frame = (MyMouseListener)e.getSource();//我们点击的时候，就会在界面上产生一个点//这个点就是鼠标的点frame.addPaint(new Point(e.getX(),e.getY()));//添加点到ArrayList集合//每次点击都会重新画一遍frame.repaint();//类似于刷新}}}

结果：

窗口监听

package com.tmy.lesson03;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(){setBounds(500,300,400,300);setBackground(Color.RED);setVisible(true);addWindowListener(new WindowAdapter(){ //匿名内部类//窗口关闭// @Overridepublic void windowClosing(WindowEvent e) {System.out.println("窗口关闭");//System.exit(0);}//窗口激活@Overridepublic void windowActivated(WindowEvent e) {System.out.println("窗口被激活");}});}//内部类的方法/* class MyWindow extends WindowAdapter{@Overridepublic void windowClosing(WindowEvent e) {System.out.println("窗口关闭");System.exit(0);}@Overridepublic void windowActivated(WindowEvent e) {System.out.println("窗口被激活");}}*/
}

结果：

键盘监听

package com.tmy.lesson03;import java.awt.*;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;public class TestKeyListener {public static void main(String[] args) {new MyKey();}
}
class MyKey extends Frame{public MyKey(){setBackground(Color.RED);setBounds(500,300,400,200);setVisible(true);addKeyListener(new KeyAdapter() {//按下键盘按键@Overridepublic void keyPressed(KeyEvent e) {//获得你当前按下的按键对应的码int keyCode = e.getKeyCode();//按键对应的码值不需要去记忆，只需要使用静态属性 KeyEvent.VK_xxxchar keyChar = e.getKeyChar();System.out.println(keyChar + "说：你特么别按我知道不？？？");if(keyCode==KeyEvent.VK_W){System.out.println("你按w干嘛？");}}});addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {System.exit(0);}});}
}

结果：[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-eVSi4Xiq-1592671903585)(C:\Users\TMY\AppData\Roaming\Typora\typora-user-images\image-20200620114904803.png)]

Swing

JFrame窗体

package com.tmy.lesson04;import javax.swing.*;
import java.awt.*;public class TestJFrame01 {public static void main(String[] args) {//新建一个窗口new TestJFrame01().init();}//init()；初始化public void init(){JFrame jFrame = new JFrame("这是一个JFrame窗口");jFrame.setBounds(500,300,500,300);jFrame.setBackground(new Color(201, 55, 58));、//占时不知这里设置有什么，测试结果这里控制不了背景的颜色jFrame.setVisible(true);//设置文字JLabel label = new JLabel();label.setText("Hello World！！");jFrame.add(label);//设置标签居中label.setHorizontalAlignment(SwingConstants.CENTER);//容器实例化，显示背景颜色Container contentPane = jFrame.getContentPane();contentPane.setBackground(new Color(201, 55, 58));//关闭事件jFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}
}

结果：[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-OZndfTGd-1592671903588)(C:\Users\TMY\AppData\Roaming\Typora\typora-user-images\image-20200620150318319.png)]

弹窗

package com.tmy.lesson04;import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;//JDialog，用来被弹出，默认就有关闭事件public class TestDialog {public static void main(String[] args) {new MyTestDialog();}
}//创建计窗口类
class MyTestDialog extends JFrame{public MyTestDialog(){setTitle("学习弹窗");setBounds(500,300,600,300);setVisible(true);setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);//创建按钮JButton jButton = new JButton("点击有惊喜");//添加按钮，首先得或得容器Container contentPane = getContentPane();//布局。绝对布局jButton.setBounds(200,100,200,60);contentPane.setLayout(null);//绝对布局，按照添加元素自己设定的参数布局//添加进窗口contentPane.add(jButton);//添加事件监听jButton.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {new MyDialog();}});}
}//创建弹窗，并设置弹窗
class MyDialog extends JDialog{public MyDialog() {this.setVisible(true);this.setBounds(100,100,300,200);//this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);//自带不需要再次设置Container contentPane = this.getContentPane();contentPane.setLayout(null);JButton jButton = new JButton("草你大爷");contentPane.setLayout(null);jButton.setBounds(100,50,100,50);contentPane.add(jButton);}
}

结果：

package com.tmy.lesson04;import javax.swing.*;
import java.awt.*;//图标需要实现类，JFrame继承
public class TestIcon extends JFrame implements Icon {private int height;private int width;public TestIcon() {}public TestIcon(int height,int width) {this.height = height;this.width = width;}public void init(){TestIcon icon = new TestIcon(15, 15);//图标可以放到标签上，也可以防止按钮上JLabel label = new JLabel("Icon",icon,SwingConstants.CENTER);//JButton jButton = new JButton(icon);//可以防止按钮上Container contentPane = this.getContentPane();contentPane.add(label);contentPane.setBackground(new Color(29, 199, 46));setBounds(500,300,400,200);setVisible(true);setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}public static void main(String[] args) {new TestIcon().init();}@Overridepublic void paintIcon(Component c, Graphics g, int x, int y) {g.fillOval(x,y,width,height);}@Overridepublic int getIconWidth() {return this.width;}@Overridepublic int getIconHeight() {return this.height;}
}

结果：[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-Xq1OB7rW-1592671903590)(C:\Users\TMY\AppData\Roaming\Typora\typora-user-images\image-20200620171141942.png)]

图片标签

package com.tmy.lesson04;import javax.swing.*;
import java.awt.*;
import java.net.URL;//将图片作为图标加到窗口public class TestImageIcon extends JFrame {public TestImageIcon() {JLabel jLabel = new JLabel("ImageIcon");JButton jButton = new JButton("百度翻译");//获取图片地址URL url = TestImageIcon.class.getResource("baidu.jpg");//获取TestImageIcon这个类的同级资源//System.out.println(url);//获取图片路径的方法（之前反射机制的方法）URL url1 = Thread.currentThread().getContextClassLoader().getResource("com/tmy/lesson04/baidu.jpg");//System.out.println(url1);//创建图片标签，将地址传到图片标签中ImageIcon imageIcon = new ImageIcon(url);//将图标加到按钮上jButton.setIcon(imageIcon);//将图标加到标签上jLabel.setIcon(imageIcon);jLabel.setHorizontalAlignment(SwingConstants.CENTER);//设置水平居中//获得窗口的容器Container contentPane = getContentPane();//将按钮加到窗口的容器中contentPane.add(jButton);//将标签加到窗口的容器中//contentPane.add(jButton);contentPane.setBackground(new Color(172, 153, 60));setBounds(500,300,500,300);setVisible(true);//设置监听关闭setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}public static void main(String[] args) {new TestImageIcon();}
}

加载到的标签结果：[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-V1YbFFk9-1592671903592)(C:\Users\TMY\AppData\Roaming\Typora\typora-user-images\image-20200620181902502.png)]

加载到的按钮结果：

[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-vD36AyGH-1592671903593)(C:\Users\TMY\AppData\Roaming\Typora\typora-user-images\image-20200620182629973.png)]

面板

package com.tmy.lesson04;import javax.swing.*;
import java.awt.*;public class TestJPanel extends JFrame {public TestJPanel() {setLayout(new GridLayout(2,2,10,10));//后面的10表示两个添加物的间距setBounds(500,300,600,400);Container contentPane = getContentPane();JPanel jPanel1 = new JPanel(new GridLayout(2,3));//表格布局JPanel jPanel2 = new JPanel(new FlowLayout());//流式布局JPanel jPanel3 = new JPanel();jPanel3.setLayout(null);//绝对布局JPanel jPanel4= new JPanel(new BorderLayout());//东南西北中布局for (int i = 0; i < 6; i++) {jPanel1.add(new JButton(""+i));}for (int i = 0; i < 8; i++) {jPanel2.add(new JButton(""+i));}jPanel3.setBackground(Color.RED);JButton jButton0 = new JButton("0");jButton0.setBounds(60,70,70,40);JButton jButton1 = new JButton("1");jButton1.setBounds(150,70,70,40);jPanel3.add(jButton0);jPanel3.add(jButton1);jPanel4.add(new JButton("上"), BorderLayout.SOUTH);jPanel4.add(new JButton("下"), BorderLayout.NORTH);jPanel4.add(new JButton("右"), BorderLayout.EAST);jPanel4.add(new JButton("左"), BorderLayout.WEST);jPanel4.add(new JButton("中"), BorderLayout.CENTER);contentPane.add(jPanel1);contentPane.add(jPanel2);contentPane.add(jPanel3);contentPane.add(jPanel4);setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);setVisible(true);}public static void main(String[] args) {new TestJPanel();}
}

结果：[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-vjXBRonX-1592671903595)(C:\Users\TMY\AppData\Roaming\Typora\typora-user-images\image-20200620225520514.png)]

Scroll面板（滚动面板）

package com.tmy.lesson04;import javax.swing.*;
import java.awt.*;//滚动面板
public class TestJScrollPanel extends JFrame {public TestJScrollPanel() {setBounds(500,300,600,400);setResizable(false);//窗口不可改变大小setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);//获得内容窗格Container contentPane = getContentPane();// 文本域   创建一个可以换行的文本域JTextArea textArea = new JTextArea(200,500);//设置文本域的长宽textArea.setText("速度快点啊");//创建滚动窗格   Scroll面板JScrollPane jScrollPane = new JScrollPane(textArea);//创建滚动窗格，并且将文本域添加到里面//将滚动窗格添加到内容窗格（窗口）中contentPane.add(jScrollPane);setVisible(true);}public static void main(String[] args) {new TestJScrollPanel();}
}

结果：[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-4LQgJ4uw-1592671903597)(C:\Users\TMY\AppData\Roaming\Typora\typora-user-images\image-20200620233004738.png)]

按钮

图片按钮

package com.tmy.lesson05;import javax.swing.*;
import java.awt.*;
import java.net.URL;public class TestJButton extends JFrame {public TestJButton() {Container contentPane = getContentPane();//两种获得路径的方法URL url1 = TestJButton.class.getResource("baidu.jpg");//只能获得当前类路径同级的文件URL url2 = Thread.currentThread().getContextClassLoader().getResource("com/tmy/lesson05/baidu.jpg");System.out.println(url1);System.out.println(url2);//创建图片图标ImageIcon imageIcon = new ImageIcon(url1);//将图标加到按钮上JButton jButton = new JButton(imageIcon);//将按钮加载带内容面板上contentPane.add(jButton);setBounds(500,300,500,300);setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);setVisible(true);}public static void main(String[] args) {new TestJButton();}
}

结果：[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-D7Sis4RZ-1592671903600)(C:\Users\TMY\AppData\Roaming\Typora\typora-user-images\image-20200621002132332.png)]

单选按钮

package com.tmy.lesson05;import javax.swing.*;
import java.awt.*;
import java.net.URL;public class TestJButton02 extends JFrame {public TestJButton02() {Container contentPane = getContentPane();//单选按钮JRadioButton radioButton1 = new JRadioButton("男");JRadioButton radioButton2 = new JRadioButton("女");JRadioButton radioButton3 = new JRadioButton("人妖");JRadioButton radioButton4 = new JRadioButton("妖人");//这里的按钮其实是可以多选的，但通过分组实现了单选，一个组里只能选一个，不在组里可继续选//由于单选框只能选择一个，所有要分组，因为一个组里只能选择一个ButtonGroup buttonGroup = new ButtonGroup();buttonGroup.add(radioButton1);buttonGroup.add(radioButton2);buttonGroup.add(radioButton3);//将按钮加载带内容面板上contentPane.setLayout(new FlowLayout());contentPane.add(radioButton1);contentPane.add(radioButton2);contentPane.add(radioButton3);contentPane.add(radioButton4);setBounds(500,300,500,300);setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);setVisible(true);}public static void main(String[] args) {new TestJButton02();}
}

结果：[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-lvYFSksD-1592671903601)(C:\Users\TMY\AppData\Roaming\Typora\typora-user-images\image-20200621003735559.png)]

复选按钮

package com.tmy.lesson05;import javax.swing.*;
import java.awt.*;public class TestJButton03 extends JFrame {public TestJButton03() {Container contentPane = getContentPane();//复选按钮JCheckBox jCheckBox1 = new JCheckBox("jCheckBox1");JCheckBox jCheckBox2 = new JCheckBox("jCheckBox2");JCheckBox jCheckBox3 = new JCheckBox("jCheckBox3");JCheckBox jCheckBox4 = new JCheckBox("jCheckBox4");//将按钮加载带内容面板上contentPane.setLayout(new FlowLayout());contentPane.add(jCheckBox1);contentPane.add(jCheckBox2);contentPane.add(jCheckBox3);contentPane.add(jCheckBox4);setBounds(500,300,500,300);setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);setVisible(true);}public static void main(String[] args) {new TestJButton03();}
}

结果：[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-nqCur0yS-1592671903603)(C:\Users\TMY\AppData\Roaming\Typora\typora-user-images\image-20200621004423171.png)]

x1");
JCheckBox jCheckBox2 = new JCheckBox(“jCheckBox2”);
JCheckBox jCheckBox3 = new JCheckBox(“jCheckBox3”);
JCheckBox jCheckBox4 = new JCheckBox(“jCheckBox4”);

    //将按钮加载带内容面板上contentPane.setLayout(new FlowLayout());contentPane.add(jCheckBox1);contentPane.add(jCheckBox2);contentPane.add(jCheckBox3);contentPane.add(jCheckBox4);setBounds(500,300,500,300);setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);setVisible(true);
}public static void main(String[] args) {new TestJButton03();
}

}


结果：[外链图片转存中...(img-nqCur0yS-1592671903603)]

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Day27_GUI编程