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实现效果如下图:
直接上代码:
package com.wk;
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.border.EmptyBorder;
import javax.swing.border.EtchedBorder;
public class ASCIIViewer extends JFrame{
private static final long serialVersionUID = -6067423561196663639L;
private JPanel contentPane;
private JTextField asciiTextField;
private JTextField numberTextField;
private JLabel label3;
private JLabel label6;
public static void main(String[] args){
try{
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}catch(Throwable e){
e.printStackTrace();
}
EventQueue.invokeLater(new Runnable(){
public void run(){
try{
ASCIIViewer frame = new ASCIIViewer();
frame.setVisible(true);
}catch(Exception e){
e.printStackTrace();
}
}
});
}
public ASCIIViewer(){
setTitle("ASCII编码查看器");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100,100,450,150);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5,5,5,5));
contentPane.setLayout(new BorderLayout(0,0));
setContentPane(contentPane);
JPanel panel = new JPanel();
contentPane.add(panel,BorderLayout.CENTER);
panel.setLayout(new GridLayout(2,1,5,5));
//the first line
JPanel asciiPanel = new JPanel();
asciiPanel.setBorder(new EtchedBorder(EtchedBorder.LOWERED,null,null));
panel.add(asciiPanel);
asciiPanel.setLayout(new GridLayout(1,5,5,5));
JLabel label1 = new JLabel("输入字符");
label1.setFont(new Font("宋体",Font.ITALIC,16));
asciiPanel.add(label1);
asciiTextField = new JTextField();
asciiPanel.add(asciiTextField);
asciiTextField.setColumns(3);
JLabel label2 = new JLabel("转换结果");
asciiPanel.add(label2);
label3 = new JLabel("");
asciiPanel.add(label3);
JButton toNumberButton = new JButton("转换");
toNumberButton.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
do_toNumberButton_actionPerformed(e);
}
});
asciiPanel.add(toNumberButton);
//the second line
JPanel numberPanel = new JPanel();
numberPanel.setBorder(new EtchedBorder(EtchedBorder.RAISED,null,null));
panel.add(numberPanel);
numberPanel.setLayout(new GridLayout(1,5,5,5));
JLabel label4 = new JLabel("输入数字");
label4.setFont(new Font("宋体",Font.BOLD,16));
numberPanel.add(label4);
numberTextField = new JTextField();
numberPanel.add(numberTextField);
numberTextField.setColumns(3);
JLabel label5 = new JLabel("转换结果");
numberPanel.add(label5);
label6 = new JLabel("");
numberPanel.add(label6);
JButton toAsciiButton = new JButton("转换");
toAsciiButton.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
do_toAsciiButton_actionPerformed(e);
}
});
numberPanel.add(toAsciiButton);
}
protected void do_toNumberButton_actionPerformed(ActionEvent e){
String ascii = asciiTextField.getText();
int i = Character.codePointAt(ascii,0);
label3.setText(""+i);
}
protected void do_toAsciiButton_actionPerformed(ActionEvent e){
String number = numberTextField.getText();
char[] a = Character.toChars(Integer.parseInt(number));
label6.setText(new String(a));
}
}