第36天学习打卡（窗口，面板，弹窗，标签，按钮，列表，文本框）

其他 2021-03-03 19:40:02 阅读次数: 0

Swing

1.1窗口、面板

package com.kuang.lesson04;

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

public class JFrameDemo {
    
    
    //init()初始化
    public void init(){
    
    
        //JFrame顶层窗口
        JFrame jf = new JFrame("这是一个JFrame窗口");
        jf.setVisible(true);
        jf.setBounds(100,100,200,200);
        jf.setBackground(Color.cyan);

        //设置文字JLabel
        JLabel label = new JLabel("欢迎来到狂神说java系列节目");
        jf.add(label);

        //容器

        //关闭事件
        jf.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.kuang.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);

        JLabel label = new JLabel("欢迎来到狂神说java系列节目");
        add(label);

        //让文本标签居中
        label.setHorizontalAlignment(SwingConstants.CENTER);
        //获得一个容器
        Container container = this.getContentPane();
        container.setBackground(Color.BLUE);

    }
}

1.2弹窗

JDialog,用来被弹出，默认就有关闭事件！

package com.kuang.lesson04;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

//主窗口
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("点击弹出一个对话框");//创建对象
        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() {
    
    //监听器
            @Override
            public void actionPerformed(ActionEvent e) {
    
    
                //弹窗
                new MyDialogDemo();

            }
        });

        container.add(button);
    }
    public static void main(String[] args) {
    
    
        new DialogDemo();

    }
}
//弹窗的窗口
class MyDialogDemo extends  JDialog{
    
    
    public MyDialogDemo() {
    
    
        this.setVisible(true);
        this.setBounds(100,100,500,500);
        //this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        Container container = this.getContentPane();
        container.setLayout(null);
        container.add(new Label("带你学习Java"));
    }
}

1.3标签

labe

图标Icon

package com.kuang.lesson04;

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

//图标是一个接口，需要实现类，Frame是个类需要继承
public class IconDemo extends JFrame implements Icon {
    
    
    private  int width;
    private  int height;
    public IconDemo(){
    
    }//无参构造
    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，也可以放在按钮上
        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();

    }

    @Override
    public void paintIcon(Component c, Graphics g, int x, int y) {
    
    
       g.fillOval(x,y,width,height);

    }

    @Override
    public int getIconWidth() {
    
    
        return this.width;
    }

    @Override
    public int getIconHeight() {
    
    
        return this.height;
    }
}

图片Icon

package com.kuang.lesson04;

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

public class ImageIconDemo extends JFrame {
    
    
    public ImageIconDemo()  {
    
    
        //获取图片的地址
        JLabel label = new JLabel("ImageIcon");
        //url为具体的地址
        URL url = ImageIconDemo.class.getResource("10.jpg");//通过这个类获取当前类路径下的东西
        ImageIcon imageIcon = new ImageIcon(url);//命名不要冲突了
        label.setIcon(imageIcon);
        label.setHorizontalAlignment(SwingConstants.CENTER);

        Container container = getContentPane();
        container.add(label);
        setVisible(true);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        setBounds(100,200,200,200);


    }

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

    }
}

1.4 面板

JPanel

package com.kuang.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));//后面的参数的意思，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(500,500);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

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

    }
}

JScrollPanel

设置边框滑动条：

package com.kuang.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("欢迎学习狂神java");

        //Scroll面板
        JScrollPane scrollPane = new JScrollPane(textArea);//设置边框的滚动条
        container.add(scrollPane);

        

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

    }

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

}

1.5按钮

图片按钮

package com.kuang.lesson05;

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

public class JButtonDemo01 extends JFrame {
    
    
    public JButtonDemo01() {
    
    
        //将一个图片变为图标
        Container container = this.getContentPane();
        URL resource = JButtonDemo01.class.getResource("10.jpg");
         Icon icon = new ImageIcon(resource);

         //把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);//按钮加到容器上

        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.kuang.lesson05;

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

public class JButtonDemo02 extends JFrame {
    
    
    public JButtonDemo02() {
    
    
        //将一个图片变为图标
        Container container = this.getContentPane();
        URL resource = JButtonDemo01.class.getResource("10.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，进行分组，一个组里面只能选一个
        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(500,300);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);



    }

    public static void main(String[] args) {
    
    
        new JButtonDemo02();

    }
}

复选按钮

package com.kuang.lesson05;

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

public class JButtonDemo03 extends JFrame {
    
    
    public JButtonDemo03() {
    
    
        //将一个图片变为图标
        Container container = this.getContentPane();
        URL resource = JButtonDemo01.class.getResource("10.jpg");
        Icon icon = new ImageIcon(resource);

        //多选框
        JCheckBox checkBox01 = new JCheckBox("chechBox01");
        JCheckBox checkBox02 = new JCheckBox("chechBox02");

        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();

    }
}

1.6列表

下拉框

package com.kuang.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("正在上映");
        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.kuang.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("zhangsan");
        contents.add("lisi");
        contents.add("wangwu");
        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

​ 下拉框可以选择地区，或者一些单个选项

​ 列表，展示信息，一般是动态扩容！

1.7文本框

文本框

package com.kuang.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.kuang.lesson06;

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

public class TestTextDemo03 extends JFrame {
    
    
    public TestTextDemo03() {
    
    

        Container container = this.getContentPane();
             //面板
        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 TestTextDemo03();
    }
}

文本域：

package com.kuang.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("欢迎学习狂神java");

        //Scroll面板
        JScrollPane scrollPane = new JScrollPane(textArea);//设置边框的滚动条
        container.add(scrollPane);



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

    }

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

}

猜你喜欢

转载自blog.csdn.net/doudoutj/article/details/113801468
今日推荐
周排行
浏览器的兼容问题[转]
WBS工作分解结构的说明与分解细则
写 链表 注意事项
nginx 配置转发
python环境变量、python当前工作目录。：：：：：：：：概念详解：：：：：：：：：
ubuntu mysql手动安装及简明配置
2018-11-14 MIDI音乐格式笔记学习
Hadoop HDFS 集群安全模式
2017-2018-2偏微分方程复习题解析7
息县装修“化妆台的选择”
每日归档
更多
2025-01-29(0)
2025-01-28(0)
2025-01-27(0)
2025-01-26(0)
2025-01-25(0)
2025-01-24(0)
2025-01-23(0)
2025-01-22(0)
2025-01-21(0)
2025-01-20(0)

代码天地 © 2018 codetd.com

境外服务器   最新电视剧2022