textfieldframe.java

测试,面板,功能在不断增加中,还请等待,糊糊！

package commonTest;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;


public class TextFieldFrame extends JFrame
	{
		private JTextField originText;
		private JTextField addText;
		private JTextField resultText;
		
		public TextFieldFrame()
			{
				setTitle("文本域测试");
				setSize(WIDTH,HEIGHT);
				
				Container contentPane=getContentPane();
				//新建文档监听器
				DocumentListener resultListener=new ResultListener();
				//建立容纳文本域的面板
				JPanel textPanel=new JPanel();
				originText=new JTextField("input Integer 1",20);
				originText.getDocument().addDocumentListener(resultListener);
				addText=new JTextField("input Integer 2",20);
				addText.getDocument().addDocumentListener(resultListener);
				resultText=new JTextField("get the result",20);
				resultText.setEditable(false);
				textPanel.add(originText);
				textPanel.add(addText);
				textPanel.add(resultText);
				
				contentPane.add(textPanel);
				
			}
		private static final int WIDTH=350;
		private static final int HEIGHT=150;
		public void getAnswer()
			{
				try
					{
						int add1,add2,answer;
						String s;
						add1=Integer.parseInt(originText.getText().trim());
						add2=Integer.parseInt(addText.getText().trim());
						answer=add1+add2;
						s=new String("="+answer);
						resultText.setText(s);
					}
				catch(NumberFormatException e)
					{
						
					}
				
			}
		public class ResultListener implements DocumentListener
		{
	         public void insertUpdate(DocumentEvent e)
	        	 {
	        		 getAnswer();
	        	 }
	         public void removeUpdate(DocumentEvent e)
	        	 {
	        		 getAnswer();
	        	 }
	         public void changedUpdate(DocumentEvent e)
	        	 {
	        		
	        	 }
		}

	}