Swing组件之单选与多选按钮

单选按钮

复习图片图标加到按钮上

package Swing;

import javax.swing.*;
import java.awt.*;
import java.net.URL;

public class JButtonDemo01 extends JFrame {
    
    public static void main(String[] args) {
    
        new JButtonDemo01();
    }

    public JButtonDemo01() {
    
        Container container=getContentPane();

        //将图片变成图标
        URL url =JButtonDemo01.class.getResource("fj.jpg");
        Icon icon=new ImageIcon(url);
        JButton jButton=new JButton();
        //将图标添加到按钮上
        jButton.setIcon(icon);
        jButton.setToolTipText("图片按钮");
        container.setLayout(new GridLayout(2,1));
        container.add(jButton);


        //单选框
        JRadioButton jRadioButton01 = new JRadioButton("JRadioButton01");
        JRadioButton jRadioButton02 = new JRadioButton("JRadioButton01");
        JRadioButton jRadioButton03 = new JRadioButton("JRadioButton01");
        //由于单选框只能选一个，分组(一个组中只能选一个)
        ButtonGroup buttonGroup = new ButtonGroup();
        buttonGroup.add(jRadioButton01);
        buttonGroup.add(jRadioButton02);
        buttonGroup.add(jRadioButton03);

        container.add(jRadioButton01,BorderLayout.CENTER);
        container.add(jRadioButton02,BorderLayout.NORTH);
        container.add(jRadioButton03,BorderLayout.SOUTH);


        this.setVisible(true);
        this.setBounds(100,200,300,300);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }
}

多选框

package Swing;

import javax.swing.*;
import java.awt.*;
import java.net.URL;

public class JButtonDeno02 extends JFrame{
    
    public static void main(String[] args) {
    
        new JButtonDeno02();
    }
    public JButtonDeno02() {
    
        Container container=getContentPane();
        //将图片变成图标
        URL url =JButtonDemo01.class.getResource("fj.jpg");
        Icon icon=new ImageIcon(url);

        //多选框
        JCheckBox CheckBox01 = new JCheckBox("CheckBox01");
        JCheckBox CheckBox02 = new JCheckBox("CheckBox02");
        JCheckBox CheckBox03 = new JCheckBox("CheckBox03");

        Container container1=getContentPane();
        container1.add(CheckBox01,BorderLayout.SOUTH);
        container1.add(CheckBox02,BorderLayout.NORTH);
        container1.add(CheckBox03,BorderLayout.CENTER);
        this.setVisible(true);
        this.setBounds(100,200,300,300);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

}

下拉选框

package Swing;

import javax.swing.*;
import java.awt.*;

public class TestComboboxDemo01 extends JFrame{
    
    public static void main(String[] args) {
    
        new TestComboboxDemo01();
    }

    public TestComboboxDemo01() {
    

        Container container=getContentPane();
        JComboBox status=new JComboBox();

        status.addItem(null);
        status.addItem("正在上映");
        status.addItem("已经下架");
        status.addItem("不好看");
        container.add(status);
        
        //这两个要写在点击事件
        //返回项数
        System.out.println(status.getSelectedIndex());
        //返回内容
        System.out.println(status.getSelectedItem());

        this.setVisible(true);
        this.setBounds(100,200,300,300);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
}

列表框

package Swing;

import javax.swing.*;
import java.awt.*;
import java.util.Vector;

public class TestComboboxDemo01 extends JFrame{
    
    public static void main(String[] args) {
    
        new TestComboboxDemo01();
    }

    public TestComboboxDemo01() {
    

        Container container=getContentPane();
       //生成列表的内容 稀疏数组
       // String[]contents={"1","2","3"};

        Vector contents=new Vector();
        JList jlist = new JList(contents);
        container.add(jlist);

        contents.add("1");
        contents.add("3");
        contents.add("1");

        this.setVisible(true);
        this.setBounds(100,200,300,300);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
}

文本框，文本域，密码框

package Swing;

import javax.swing.*;
import java.awt.*;
import java.util.Vector;

public class TestTextDemo01 extends JFrame{
    
    public static void main(String[] args) {
    
        new TestTextDemo01();
    }
    public TestTextDemo01() {
    
        Container container=getContentPane();

        JTextField textField=new JTextField("hello");
       JTextArea jTextArea=new JTextArea(20,30);
        JPasswordField jPasswordField=new JPasswordField();
        jPasswordField.setEchoChar('*');
        
        container.add(jPasswordField,BorderLayout.SOUTH);
        container.add(textField,BorderLayout.CENTER);
        container.add(jTextArea,BorderLayout.NORTH);
        
        this.setVisible(true);
        this.setBounds(100,200,300,300);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
}