GUI编程--03--Swing
2024-04-11 06:08:37
Swing 窗口
import javax.swing.*;
import java.awt.*;public class TestJFrame {public static void main(String[] args) {//建立一个窗口new TestJFrame().init();}//init()；初始化public void init(){//顶级窗口JFrame jf = new JFrame("这是一个JFram窗口");jf.setVisible(true);jf.setBounds(100,100,200,200);//设置文字JlabelJLabel label = new JLabel("加油!!!");jf.add(label);//居中label.setHorizontalAlignment(SwingConstants.CENTER);//容器实例化Container contentPane = jf.getContentPane();contentPane.setBackground(Color.green);//关闭事件jf.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}
}
容器实例化
//容器实例化
Container contentPane = jf.getContentPane();
弹窗 JDialog
package swing;import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;public class TestDialog {public static void main(String[] args) {new Dialog1();}
}//主窗口
class Dialog1 extends JFrame{public Dialog1(){this.setVisible(true);this.setBounds(100,100,300,300);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 jButton = new JButton("弹出对话框");//创建jButton.setBounds(30,30,200,50);container.add(jButton);//点击这个按钮的时候，弹出一个弹窗（监听事件）jButton.addActionListener(new AbstractAction() { //监听器@Overridepublic void actionPerformed(ActionEvent e) {//弹窗new Dialog2();}});container.add(jButton);}
}
//弹窗的窗口
class Dialog2 extends JDialog{public Dialog2(){this.setVisible(true);this.setBounds(100,100,500,500);//弹窗中默认有此事件//this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);Container container = this.getContentPane();container.setLayout(null);container.setBackground(Color.PINK);Label label = new Label("fighting !!!");label.setBounds(100,100,100,100);container.add(label);}
}
标签/图片
label
new Lavel(“xxx”);
new JLavel(“xxx”);
Icon 图标
import javax.swing.*;
import java.awt.*;public class TestIcon {public static void main(String[] args) {new Icon1(100,100).init();}
}class Icon1 extends JFrame implements Icon{//属性private int width;private int high;public Icon1(){}//无参构造public Icon1(int width,int high){this.width = width;this.high = high;}//方法public void init(){setBounds(100,100,300,300);Icon1 icon1 = new Icon1(15,15);//图标放在标签上，也可以放在按钮上JLabel jLabel = new JLabel("gaogao",icon1,SwingConstants.CENTER);Container container = getContentPane();container.add(jLabel);this.setVisible(true);this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}@Overridepublic void paintIcon(Component c, Graphics g, int x, int y) {g.fillOval(x,y,width,high);}@Overridepublic int getIconWidth() {return this.width;}@Overridepublic int getIconHeight() {return this.high;}
}
ImageIcon 图片
package swing;import javax.swing.*;
import java.awt.*;
import java.net.URL;public class TestImageIcon {public static void main(String[] args) {new TestImageIcon();}public TestImageIcon() {JFrame jFrame = new JFrame();//获取图片地址 url是一个具体的地址JLabel jLabel = new JLabel("ImageIcon");URL url = TestImageIcon.class.getResource("gougou.jpg");//获取当前类下的资源ImageIcon imageIcon = new ImageIcon(url);//命名避免冲突jLabel.setIcon(imageIcon);//图片饭在jLabel上jLabel.setHorizontalAlignment(SwingConstants.CENTER);Container container =jFrame.getContentPane();container.add(jLabel);jFrame.setVisible(true);jFrame. setBounds(100,100,300,300);jFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}}
面板 JPanel
import javax.swing.*;
import java.awt.*;public class TestJPane extends JFrame{public TestJPane() {Container container = this.getContentPane();container.setLayout(new GridLayout(2,1,10,10)); //间距JPanel jPanel = new JPanel(new GridLayout(1,3));JPanel jPanel1 = new JPanel(new GridLayout(1,3));JPanel jPanel2 = new JPanel(new GridLayout(1,3));JPanel jPanel3 = new JPanel(new GridLayout(1,3));jPanel.add(new JButton("1"));jPanel.add(new JButton("2"));jPanel.add(new JButton("3"));jPanel1.add(new JButton("1"));jPanel1.add(new JButton("2"));jPanel1.add(new JButton("3"));jPanel2.add(new JButton("1"));jPanel2.add(new JButton("2"));jPanel2.add(new JButton("3"));jPanel3.add(new JButton("1"));jPanel3.add(new JButton("2"));jPanel3.add(new JButton("3"));container.add(jPanel);container.add(jPanel1);container.add(jPanel2);container.add(jPanel3);setVisible(true);setBounds(100,100,300,300);this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}public static void main(String[] args) {new TestJPane();}
}
JScrollPonel 带有滚动条的 卷轴面板
import javax.swing.*;
import java.awt.*;public class JScrollDemo extends JFrame {public JScrollDemo(){Container container = this.getContentPane();//文本域JTextArea textArea = new JTextArea(200 ,400);textArea.setText("待到秋来九月八 我花开后百花杀!!!");//Scroll面板JScrollPane scrollPane = new JScrollPane(textArea);container.add(scrollPane);this.setBounds(100,100,400,400);this.setVisible(true);this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}public static void main(String[] args) {new JScrollDemo();}
}
按钮
普通按钮 JButton
import javax.swing.*;
import java.awt.*;
import java.net.URL;public class TestJButton extends JFrame {public TestJButton() {Container container = this.getContentPane();//将图片变为一个图标URL url = TestJButton.class.getResource("gougou.jpg");ImageIcon icon = new ImageIcon(url);//把图片放在按钮上JButton jButton = new JButton();jButton.setIcon(icon);jButton.setSize(100,100);jButton.setToolTipText("图片按钮");//addcontainer.add(jButton);setVisible(true);setBounds(100,100,300,300);setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}public static void main(String[] args) {new TestJButton();}
}
单选 JRadioButton
import javax.swing.*;
import java.awt.*;
import java.net.URL;public class TestJButton extends JFrame {public TestJButton() {Container container = this.getContentPane();//单选框JRadioButton jRadioButton1 = new JRadioButton("1");JRadioButton jRadioButton2 = new JRadioButton("2");JRadioButton jRadioButton3 = new JRadioButton("3");//由于单选框只能选一个所以我们要分组，一个组中只能选一个ButtonGroup group = new ButtonGroup();group.add(jRadioButton1);group.add(jRadioButton2);group.add(jRadioButton3);container.add(jRadioButton1,BorderLayout.CENTER);container.add(jRadioButton2,BorderLayout.NORTH);container.add(jRadioButton3,BorderLayout.SOUTH);setVisible(true);setBounds(100,100,300,300);setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}public static void main(String[] args) {new TestJButton();}
}
复选 JCheckBox
import javax.swing.*;
import java.awt.*;
import java.net.URL;public class TestJButton extends JFrame {public TestJButton() {Container container = this.getContentPane();JCheckBox jCheckBox = new JCheckBox("1");JCheckBox jCheckBox1 = new JCheckBox("2");container.add(jCheckBox,BorderLayout.SOUTH);container.add(jCheckBox1,BorderLayout.NORTH);setVisible(true);setBounds(100,100,300,300);setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}public static void main(String[] args) {new TestJButton();}
}
列表
下拉框 JComboBox
应用：选择地区，或一些单个选项
import javax.swing.*;
import java.awt.*;public class TestJCombobox extends JFrame{public TestJCombobox() {Container container = this.getContentPane();JComboBox jComboBox = new JComboBox();jComboBox.addItem(null);jComboBox.addItem("正在上映");jComboBox.addItem("已下架");jComboBox.addItem("即将上映");container.add(jComboBox);this.setBounds(100,100,300,300);this.setBackground(Color.CYAN);setVisible(true);setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}public static void main(String[] args) {new TestJCombobox();}
}
列表 JList
import javax.swing.*;
import java.awt.*;public class TestJCombobox extends JFrame{public TestJCombobox() {Container container = this.getContentPane();//生成列表内容String[] contents = {"1","2","3"};//列表需要放入内容JList jList = new JList(contents);container.add(jList);setVisible(true);setBounds(100,100,300,300);setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}public static void main(String[] args) {new TestJCombobox();}
}
文本框
文本框 JTextField
import javax.swing.*;
import java.awt.*;public class TestText1 extends JFrame{public TestText1() {Container container = getContentPane();JTextField jTextField = new JTextField("强啊");JTextField jTextField1 = new JTextField("真的吗 666666666",20);//布局container.add(jTextField, BorderLayout.NORTH);container.add(jTextField1,BorderLayout.SOUTH);setVisible(true);setBounds(100,100,300,300);setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}public static void main(String[] args) {new TestText1();}
}
密码框 JPasswordField
有默认值，但也可以设置 jPasswordField.setEchoChar(’+’);
import javax.swing.*;
import java.awt.*;public class TestText1 extends JFrame{public TestText1() {Container container = getContentPane();JPasswordField jPasswordField = new JPasswordField(); //有默认值，但也可以设置//jPasswordField.setEchoChar('+');container.add(jPasswordField);setVisible(true);setBounds(100,100,300,300);setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}public static void main(String[] args) {new TestText1();}
}
文本域 JTextArea
import javax.swing.*;
import java.awt.*;public class JScrollDemo extends JFrame {public JScrollDemo(){Container container = this.getContentPane();//文本域JTextArea textArea = new JTextArea(200 ,400);textArea.setText("待到秋来九月八，我花开后百花杀,");textArea.append("\r\n");textArea.append("冲天香阵透长安，满城尽带黄金甲。");//Scroll面板JScrollPane scrollPane = new JScrollPane(textArea);container.add(scrollPane);this.setBounds(100,100,400,400);this.setVisible(true);this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}public static void main(String[] args) {new JScrollDemo();}
}
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