import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import java.awt.Color;
import java.awt.Component;
import javax.swing.JButton;
import java.awt.Font;
import javax.swing.SwingConstants;
import javax.swing.border.TitledBorder;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.util.ArrayList;
import javax.swing.JTextField;
/**
* 虚拟键盘(键盘的按下与释放)
*/
public class KeyBoard extends JFrame { //创建“键盘”类继承JFrame
//声明窗体中的成员组件
private JPanel contentPane;
private JTextField textField;
private JButton btnQ;
private JButton btnW;
private JButton btnE;
private JButton btnR;
private JButton btnT;
private JButton btnY;
private JButton btnU;
private JButton btnI;
private JButton btnO;
private JButton btnP;
private JButton btnA;
private JButton btnS;
private JButton btnD;
private JButton btnF;
private JButton btnG;
private JButton btnH;
private JButton btnJ;
private JButton btnK;
private JButton btnL;
private JButton btnZ;
private JButton btnX;
private JButton btnC;
private JButton btnV;
private JButton btnB;
private JButton btnN;
private JButton btnM;
Color green=Color.GREEN;//定义Color对象,用来表示按下键的颜色
Color white=Color.WHITE;//定义Color对象,用来表示释放键的颜色
ArrayList<JButton> btns=new ArrayList<JButton>();//定义一个集合,用来存储所有的按键ID
//自定义一个方法,用来将容器中的所有JButton组件添加到集合中
private void addButtons(){
for(Component cmp :contentPane.getComponents()){//遍历面板中的所有组件
if(cmp instanceof JButton){//判断组件的类型是否为JButton类型
btns.add((JButton)cmp);//将JButton组件添加到集合中
}
}
}
/**
* 主方法
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() { //使得Runnable中的的run()方法在the system EventQueue的指派线程中被调用
public void run() {
try {
KeyBoard frame = new KeyBoard(); //创建KeyBoard对象
frame.setVisible(true); //使frame可视
frame.addButtons();//初始化存储所有按键的集合
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* 创建JFrame窗体
*/
public KeyBoard() { //KeyBoard的构造方法
setTitle("虚拟键盘"); //设置窗体题目
setResizable(false); //不可改变窗体宽高
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //设置窗体关闭的方式
setBounds(100, 100, 561, 280); //设置窗体的位置和宽高
/**
* 创建JPanel面板contentPane置于JFrame窗体中,并设置面板的背景色、边距和布局
*/
contentPane = new JPanel();
contentPane.setBackground(Color.WHITE);
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
/**
* 创建按钮button置于面板contentPane中,设置按钮的背景色、位置、宽高以及按钮中的字体位置、内容、样式
*/
btnQ = new JButton("Q");
btnQ.setBackground(white);
btnQ.setVerticalAlignment(SwingConstants.TOP);
btnQ.setHorizontalAlignment(SwingConstants.LEADING);
btnQ.setFont(new Font("Times New Roman", Font.PLAIN, 16));
btnQ.setBounds(0, 60, 50, 45);
contentPane.add(btnQ);
/**
* 创建按钮button_2置于面板contentPane中,设置按钮的背景色、位置、宽高以及按钮中的字体位置、内容、样式
*/
btnW = new JButton("W");
btnW.setBackground(white);
btnW.setVerticalAlignment(SwingConstants.TOP);
btnW.setHorizontalAlignment(SwingConstants.LEADING);
btnW.setFont(new Font("Times New Roman", Font.PLAIN, 16));
btnW.setBounds(55, 60, 50, 45);
contentPane.add(btnW);
/**
* 创建按钮button_3置于面板contentPane中,设置按钮的背景色、位置、宽高以及按钮中的字体位置、内容、样式
*/
btnE = new JButton("E");
btnE.setBackground(white);
btnE.setVerticalAlignment(SwingConstants.TOP);
btnE.setHorizontalAlignment(SwingConstants.LEADING);
btnE.setFont(new Font("Times New Roman", Font.PLAIN, 16));
btnE.setBounds(110, 60, 50, 45);
contentPane.add(btnE);
/**
* 创建按钮button_4置于面板contentPane中,设置按钮的背景色、位置、宽高以及按钮中的字体位置、内容、样式
*/
btnR = new JButton("R");
btnR.setBackground(white);
btnR.setVerticalAlignment(SwingConstants.TOP);
btnR.setHorizontalAlignment(SwingConstants.LEADING);
btnR.setFont(new Font("Times New Roman", Font.PLAIN, 16));
btnR.setBounds(165, 60, 50, 45);
contentPane.add(btnR);
/**
* 创建按钮button_5置于面板contentPane中,设置按钮的背景色、位置、宽高以及按钮中的字体位置、内容、样式
*/
btnF = new JButton("F");
btnF.setBackground(white);
btnF.setVerticalAlignment(SwingConstants.TOP);
btnF.setHorizontalAlignment(SwingConstants.LEADING);
btnF.setFont(new Font("Times New Roman", Font.PLAIN, 16));
btnF.setBounds(195, 125, 50, 45);
contentPane.add(btnF);
/**
* 创建按钮button_6置于面板contentPane中,设置按钮的背景色、位置、宽高以及按钮中的字体位置、内容、样式
*/
btnD = new JButton("D");
btnD.setBackground(white);
btnD.setVerticalAlignment(SwingConstants.TOP);
btnD.setHorizontalAlignment(SwingConstants.LEADING);
btnD.setFont(new Font("Times New Roman", Font.PLAIN, 16));
btnD.setBounds(137, 125, 50, 45);
contentPane.add(btnD);
btnT = new JButton("T");
btnT.setVerticalAlignment(SwingConstants.TOP);
btnT.setHorizontalAlignment(SwingConstants.LEADING);
btnT.setFont(new Font("Times New Roman", Font.PLAIN, 16));
btnT.setBackground(white);
btnT.setBounds(220, 60, 50, 45);
contentPane.add(btnT);
btnY = new JButton("Y");
btnY.setVerticalAlignment(SwingConstants.TOP);
btnY.setHorizontalAlignment(SwingConstants.LEADING);
btnY.setFont(new Font("Times New Roman", Font.PLAIN, 16));
btnY.setBackground(white);
btnY.setBounds(275, 60, 50, 45);
contentPane.add(btnY);
btnU = new JButton("U");
btnU.setVerticalAlignment(SwingConstants.TOP);
btnU.setHorizontalAlignment(SwingConstants.LEADING);
btnU.setFont(new Font("Times New Roman", Font.PLAIN, 16));
btnU.setBackground(white);
btnU.setBounds(330, 60, 50, 45);
contentPane.add(btnU);
btnI = new JButton("I");
btnI.setVerticalAlignment(SwingConstants.TOP);
btnI.setHorizontalAlignment(SwingConstants.LEADING);
btnI.setFont(new Font("Times New Roman", Font.PLAIN, 16));
btnI.setBackground(white);
btnI.setBounds(385, 60, 50, 45);
contentPane.add(btnI);
btnO = new JButton("O");
btnO.setVerticalAlignment(SwingConstants.TOP);
btnO.setHorizontalAlignment(SwingConstants.LEADING);
btnO.setFont(new Font("Times New Roman", Font.PLAIN, 16));
btnO.setBackground(white);
btnO.setBounds(440, 60, 50, 45);
contentPane.add(btnO);
btnP = new JButton("P");
btnP.setVerticalAlignment(SwingConstants.TOP);
btnP.setHorizontalAlignment(SwingConstants.LEADING);
btnP.setFont(new Font("Times New Roman", Font.PLAIN, 16));
btnP.setBackground(white);
btnP.setBounds(495, 60, 50, 45);
contentPane.add(btnP);
btnA = new JButton("A");
btnA.setVerticalAlignment(SwingConstants.TOP);
btnA.setHorizontalAlignment(SwingConstants.LEADING);
btnA.setFont(new Font("Times New Roman", Font.PLAIN, 16));
btnA.setBackground(white);
btnA.setBounds(23, 125, 50, 45);
contentPane.add(btnA);
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btnS.setVerticalAlignment(SwingConstants.TOP);
btnS.setHorizontalAlignment(SwingConstants.LEADING);
btnS.setFont(new Font("Times New Roman", Font.PLAIN, 16));
btnS.setBackground(white);
btnS.setBounds(82, 125, 50, 45);
contentPane.add(btnS);
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btnG.setVerticalAlignment(SwingConstants.TOP);
btnG.setHorizontalAlignment(SwingConstants.LEADING);
btnG.setFont(new Font("Times New Roman", Font.PLAIN, 16));
btnG.setBackground(white);
btnG.setBounds(251, 125, 50, 45);
contentPane.add(btnG);
btnH = new JButton("H");
btnH.setVerticalAlignment(SwingConstants.TOP);
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