mytextfield.java

这个是JAVA程序基础书上第六章处理异常源代码

import java.awt.*;
import javax.swing.*;
public class MyTextField {

   public MyTextField() {
	 super();
   }

   public static void main(java.lang.String[] args) {
	 
	 TextField tf1, tf2, tf3, tf4;
   	 tf1 = new TextField();
	 tf2 = new TextField(20);
	 tf3 = new TextField("您好！");
	 tf4 = new TextField("您好！",30);
	 JFrame jf = new JFrame();
	 JPanel jp = new JPanel();
	 jf.getContentPane().add(jp);
	 jf.getContentPane().add(tf1);
	 jf.getContentPane().add(tf2);
	 jf.setVisible(true);
   }
}