清华大学：JAVA教学课件：8-8

程序8-8：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
public class JTextFieldDemo1 {
JFrame frame = new JFrame ("JTextField Demo 1");
public static void main(String args[]) {
JTextFieldDemo1 tfd1 = new JTextFieldDemo1();
tfd1.go();
}
public void go() {
JTextField tf11 = new JTextField("a",9);
JTextField tf12 = new JTextField("abcdefg",10);
JTextField tf13 = new JTextField("abc",15);
JPanel panel1 = new JPanel();//使用缺省的FlowLayout
panel1.add(tf11);
panel1.add(tf12);
panel1.add(tf13);
Border etched = BorderFactory.createEtchedBorder();
Border border = BorderFactory.createTitledBorder(etched,"FlowLayout Panel");
panel1.setBorder(border);
JTextField tf21 = new JTextField("a",9);
JTextField tf22 = new JTextField("abcdefg",10);
JTextField tf23 = new JTextField("abc",15);
JPanel panel2 = new JPanel();
panel2.setLayout(new GridLayout(0,1)); //使用GridLayout
panel2.add(tf21);
panel2.add(tf22);
panel2.add(tf23);
border = BorderFactory.createTitledBorder(etched,"GridLayout Panel");
panel2.setBorder(border);
Container cp = frame.getContentPane();
cp.setLayout(new GridLayout(0,1));
cp.add(panel1);
cp.add(panel2);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
}