GUI编程(Swing_02)

GUI编程

Swing

5.按钮

图片按钮

package com.deng.lesson05;

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

public class JButtonDemo01 extends JFrame {
    public JButtonDemo01() {
        Container container = this.getContentPane();
        //将一个图片变为图标
        URL resource = JButtonDemo01.class.getResource("1.jpg");
        Icon icon = new ImageIcon(resource);

        //将这个图标放在按钮上
        JButton button = new JButton();
        button.setIcon(icon);
        button.setToolTipText("图片按钮");

        //add
        container.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

package com.deng.lesson05;

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

public class JButtonDemo02 extends JFrame {
    public JButtonDemo02() {
        Container container = this.getContentPane();
        //将一个图片变为图标
        URL resource = JButtonDemo01.class.getResource("1.jpg");
        Icon icon = new ImageIcon(resource);

        //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);

        //add
        container.add(radioButton1,BorderLayout.CENTER);
        container.add(radioButton1,BorderLayout.NORTH);
        container.add(radioButton1,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

package com.deng.lesson05;

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

public class JButtonDemo03 extends JFrame {
    public JButtonDemo03() {
        Container container = this.getContentPane();
        //将一个图片变为图标
        URL resource = JButtonDemo01.class.getResource("1.jpg");
        Icon icon = new ImageIcon(resource);

        //多选框
        JCheckBox checkBox01 = new JCheckBox("checkBox01");
        JCheckBox checkBox02 = new JCheckBox("checkBox02");

        //add
        container.add(checkBox01, BorderLayout.NORTH);
        container.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

package com.deng.lesson06;

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

public class TestComboBoxDemo01 extends JFrame {
    public TestComboBoxDemo01() {

        Container container = this.getContentPane();

        JComboBox status = new JComboBox();

        status.addItem(null);
        status.addItem("正在热映");
        status.addItem("已下架");
        status.addItem("即将上映");

        container.add(status);

        this.setVisible(true);
        this.setSize(500, 350);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new TestComboBoxDemo01();
    }
}

• 列表框

package com.deng.lesson06;

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

public class TestComboBoxDemo02 extends JFrame {
    public TestComboBoxDemo02() {

        Container container = this.getContentPane();

        JComboBox status = new JComboBox();

        //生成列表的内容
        // 静态
        // String[] contents={"1","2","3"};

        Vector contents = new Vector();
        //列表中需要放入的内容
        JList jList = new JList(contents);

        contents.add("张三");
        contents.add("李四");
        contents.add("王五");
        
        container.add(jList);

        this.setVisible(true);
        this.setSize(500, 350);
        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

package com.deng.lesson06;

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

public class TestTextDemo01 extends JFrame {
    public TestTextDemo01() {

        Container container = this.getContentPane();

        JTextField textField = new JTextField("hello");
        JTextField textField2 = new JTextField("world",20);

        container.add(textField,BorderLayout.NORTH);
        container.add(textField2,BorderLayout.SOUTH);

        this.setVisible(true);
        this.setSize(500, 350);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new TestTextDemo01();
    }
}

• 密码框

package com.deng.lesson06;

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

public class TestTextDemo02 extends JFrame {
    public TestTextDemo02() {

        Container container = this.getContentPane();
        
        JPasswordField passwordField = new JPasswordField();
        passwordField.setEchoChar('*');

        container.add(passwordField);

        this.setVisible(true);
        this.setSize(500, 350);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new TestTextDemo02();
    }
}

• 文本域

package com.deng.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！");

        //Scroll面板
        JScrollPane scrollPane = new JScrollPane(textArea);
        container.add(scrollPane);

        this.setVisible(true);
        this.setBounds(100,300,300,350);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new JScrollDemo();
    }
}