图形界面系列教材 (六)- Swing 四种常见面板

 

步骤1:基本面板
步骤2:ContentPane
步骤3:SplitPanel
步骤4:JScrollPanel
步骤5:TabbedPanel
步骤6:CardLayerout
步骤7:练习-SplitPanel
步骤8:答案-SplitPanel
步骤9:练习-按照eclipse的风格显示多个java文件
步骤10:答案-按照eclipse的风格显示多个java文件

示例 1 : 基本面板

JPanel即为基本面板 
面板和JFrame一样都是容器,不过面板一般用来充当中间容器,把组件放在面板上,然后再把面板放在窗体上。 
一旦移动一个面板,其上面的组件,就会全部统一跟着移动,采用这种方式,便于进行整体界面的设计

基本面板

package gui;

 

import java.awt.Color;

import java.awt.FlowLayout;

 

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;

 

public class TestGUI {

    public static void main(String[] args) {

 

        JFrame f = new JFrame("LoL");

        f.setSize(400300);

        f.setLocation(200200);

 

        f.setLayout(null);

 

        JPanel p1 = new JPanel();

        // 设置面板大小

        p1.setBounds(505030060);

        // 设置面板背景颜色

        p1.setBackground(Color.RED);

 

        // 这一句可以没有,因为JPanel默认就是采用的FlowLayout

        p1.setLayout(new FlowLayout());

 

        JButton b1 = new JButton("英雄1");

        JButton b2 = new JButton("英雄2");

        JButton b3 = new JButton("英雄3");

 

        // 把按钮加入面板

        p1.add(b1);

        p1.add(b2);

        p1.add(b3);

 

        JPanel p2 = new JPanel();

        JButton b4 = new JButton("英雄4");

        JButton b5 = new JButton("英雄5");

        JButton b6 = new JButton("英雄6");

 

        p2.add(b4);

        p2.add(b5);

        p2.add(b6);

 

        p2.setBackground(Color.BLUE);

        p2.setBounds(1015030060);

 

        // 把面板加入窗口

        f.add(p1);

        f.add(p2);

 

        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 

        f.setVisible(true);

    }

}

示例 2 : ContentPane

JFrame上有一层面板,叫做ContentPane
平时通过f.add()向JFrame增加组件,其实是向JFrame上的 ContentPane加东西

package gui;

 

import javax.swing.JButton;

import javax.swing.JFrame;

 

public class TestGUI {

    public static void main(String[] args) {

 

        JFrame f = new JFrame("LoL");

        f.setSize(400300);

        f.setLocation(200200);

        f.setLayout(null);

        JButton b = new JButton("一键秒对方基地挂");

        b.setBounds(505028030);

 

        f.add(b);

        // JFrame上有一层面板,叫做ContentPane

        // 平时通过f.add()向JFrame增加组件,其实是向JFrame上的 ContentPane加东西

        // f.add等同于f.getContentPane().add(b);

        f.getContentPane().add(b);

 

        // b.getParent()获取按钮b所处于的容器

        // 打印出来可以看到,实际上是ContentPane而非JFrame

        System.out.println(b.getParent());

 

        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 

        f.setVisible(true);

    }

}

示例 3 : SplitPanel

创建一个水平JSplitPane,左边是pLeft,右边是pRight

SplitPanel

package gui;

  

import java.awt.Color;

import java.awt.FlowLayout;

  

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JSplitPane;

  

public class TestGUI {

    public static void main(String[] args) {

  

        JFrame f = new JFrame("LoL");

        f.setSize(400300);

        f.setLocation(200200);

  

        f.setLayout(null);

  

        JPanel pLeft = new JPanel();

        pLeft.setBounds(505030060);

  

        pLeft.setBackground(Color.RED);

  

        pLeft.setLayout(new FlowLayout());

  

        JButton b1 = new JButton("盖伦");

        JButton b2 = new JButton("提莫");

        JButton b3 = new JButton("安妮");

  

        pLeft.add(b1);

        pLeft.add(b2);

        pLeft.add(b3);

  

        JPanel pRight = new JPanel();

        JButton b4 = new JButton("英雄4");

        JButton b5 = new JButton("英雄5");

        JButton b6 = new JButton("英雄6");

  

        pRight.add(b4);

        pRight.add(b5);

        pRight.add(b6);

  

        pRight.setBackground(Color.BLUE);

        pRight.setBounds(1015030060);

  

        // 创建一个水平JSplitPane,左边是p1,右边是p2

        JSplitPane sp = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, pLeft, pRight);

        // 设置分割条的位置

        sp.setDividerLocation(80);

  

        // 把sp当作ContentPane

        f.setContentPane(sp);

  

        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

  

        f.setVisible(true);

    }

}

示例 4 : JScrollPanel

使用带滚动条的面板有两种方式
1. 在创建JScrollPane,把组件作为参数传进去

JScrollPane sp = new JScrollPane(ta);


2. 希望带滚动条的面板显示其他组件的时候,调用setViewportView

sp.setViewportView(ta);

JScrollPanel

package gui;

 

import javax.swing.JFrame;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

 

public class TestGUI {

    public static void main(String[] args) {

 

        JFrame f = new JFrame("LoL");

        f.setSize(400300);

        f.setLocation(200200);

 

        f.setLayout(null);

        //准备一个文本域,在里面放很多数据

        JTextArea ta = new JTextArea();

        for (int i = 0; i < 1000; i++) {

            ta.append(String.valueOf(i));

        }

        //自动换行

        ta.setLineWrap(true);

        JScrollPane sp = new JScrollPane(ta);

 

        f.setContentPane(sp);

 

        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 

        f.setVisible(true);

    }

}

示例 5 : TabbedPanel

TabbedPanel

package gui;

  

import java.awt.Color;

import java.awt.FlowLayout;

 

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JTabbedPane;

  

public class TestGUI {

    public static void main(String[] args) {

  

        JFrame f = new JFrame("LoL");

        f.setSize(400300);

        f.setLocation(200200);

  

        f.setLayout(null);

  

        JPanel p1 = new JPanel();

        p1.setBounds(505030060);

  

        p1.setBackground(Color.RED);

  

        p1.setLayout(new FlowLayout());

  

        JButton b1 = new JButton("英雄1");

        JButton b2 = new JButton("英雄2");

        JButton b3 = new JButton("英雄3");

  

        p1.add(b1);

        p1.add(b2);

        p1.add(b3);

  

        JPanel p2 = new JPanel();

        JButton b4 = new JButton("英雄4");

        JButton b5 = new JButton("英雄5");

        JButton b6 = new JButton("英雄6");

  

        p2.add(b4);

        p2.add(b5);

        p2.add(b6);

  

        p2.setBackground(Color.BLUE);

        p2.setBounds(1015030060);

  

        JTabbedPane tp = new JTabbedPane();

        tp.add(p1);

        tp.add(p2);

  

        // 设置tab的标题

        tp.setTitleAt(0"红色tab");

        tp.setTitleAt(1"蓝色tab");

         

        ImageIcon i = new ImageIcon("e:/project/j2se/j.png");

        tp.setIconAt(0,i );

        tp.setIconAt(1,i );

  

        f.setContentPane(tp);

  

        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

  

        f.setVisible(true);

    }

}

示例 6 : CardLayerout

CardLayerout 布局器 很像TabbedPanel ,在本例里面上面是一个下拉框,下面是一个CardLayerout 的JPanel
这个JPanel里有两个面板,可以通过CardLayerout方便的切换

CardLayerout

package gui;

 

import java.awt.BorderLayout;

import java.awt.CardLayout;

import java.awt.event.ItemEvent;

import java.awt.event.ItemListener;

 

import javax.swing.JButton;

import javax.swing.JComboBox;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JTextField;

 

public class TestGUI {

 

    public static void main(String[] args) {

        JFrame f = new JFrame("CardLayerout");

 

        JPanel comboBoxPane = new JPanel();

        String buttonPanel = "按钮面板";

        String inputPanel = "输入框面板";

        String comboBoxItems[] = { buttonPanel, inputPanel };

        JComboBox<String> cb = new JComboBox<>(comboBoxItems);

        comboBoxPane.add(cb);

 

        // 两个Panel充当卡片

        JPanel card1 = new JPanel();

        card1.add(new JButton("按钮 1"));

        card1.add(new JButton("按钮 2"));

        card1.add(new JButton("按钮 3"));

 

        JPanel card2 = new JPanel();

        card2.add(new JTextField("输入框"20));

 

        JPanel cards; // a panel that uses CardLayout

        cards = new JPanel(new CardLayout());

        cards.add(card1, buttonPanel);

        cards.add(card2, inputPanel);

 

        f.add(comboBoxPane, BorderLayout.NORTH);

        f.add(cards, BorderLayout.CENTER);

 

        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        f.setSize(250150);

        f.setLocationRelativeTo(null);

        f.setVisible(true);

 

        cb.addItemListener(new ItemListener() {

 

            @Override

            public void itemStateChanged(ItemEvent evt) {

                CardLayout cl = (CardLayout) (cards.getLayout());

                cl.show(cards, (String) evt.getItem());

            }

        });     

    }

         

}


更多内容,点击了解: https://how2j.cn/k/gui/gui-panel/406.html

posted @ 2020-03-26 13:11  Lan_ht  阅读(324)  评论(0编辑  收藏  举报