java---Unicode-字符转换器

实现一个字符（包括汉字）的简单互相转换；

package cn.hncu.gui2;

import java.awt.Button;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.Label;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class QueryFrame extends Frame implements ActionListener { private TextField tfd1,tfd2; private Button btnChar,btnUni; public QueryFrame(String str) { super(str); this.setBounds(300,240,300,150); this.setBackground(Color.LIGHT_GRAY); this.setLayout(new FlowLayout(FlowLayout.RIGHT)); tfd1 = new TextField("汉字",10); this.add(new Label("请输入要查询的汉字")); this.add(tfd1); tfd2 = new TextField(10); this.add(new Label("Unicode码值")); this.add(tfd2); btnUni =  new Button("查询Unicode码"); btnChar = new Button("查询字符"); this.add(btnUni); this.add(btnChar); btnUni.addActionListener(this); btnChar.addActionListener(this); this.addWindowListener(new Win2Close()); this.setVisible(true); } public static void main(String[] args) { new QueryFrame("Unicode字符查询器"); } @Override public void actionPerformed(ActionEvent e) { if(e.getSource()==btnUni){ String str = tfd1.getText(); char ch = str.charAt(0); tfd2.setText(""+(int)ch); }else   if(e.getSource()==btnChar){ String str = tfd2.getText(); try { int n = Integer.parseInt(str); tfd1.setText(""+(char)n); } catch (NumberFormatException e1) { tfd1.setText(str+ "不能转换"); } } } }

class Win2Close extends WindowAdapter{ @Override public void windowClosing(WindowEvent e) { System.exit(0); }
}

  

 

  
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正常转换：

异常处理：

文章来源: chenhx.blog.csdn.net，作者：谙忆，版权归原作者所有，如需转载，请联系作者。

原文链接：chenhx.blog.csdn.net/article/details/49835563