第1楼 2007-06-07 21:08 陶爱宝 写道:

求高手编写一道java题

题目：编写一道随机数的题。
要求：题中要包括标签、文本框、按钮。最好要有布局，其他的不需要体现出来。
高手们如果有不明白的可提出，我也是受人之托。

第2楼 2013-08-31 12:44 Robot :

求高手编写一道java题 相关

第3楼 2007-06-07 21:35 Kimmy★Piggy 写道:

package iAsk;

import java.awt.BorderLayout;
import java.awt.Rectangle;
import java.util.Random;

import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingConstants;

public class Test extends JFrame {

private static final long serialVersionUID = 1L;

private JPanel jContentPane = null;

private JDesktopPane jDesktopPane = null;

private JLabel jLabel = null;

private JTextField jTextField = null;

private JButton jButton = null;

public Test() {
super();
initialize();
}

private void initialize() {
this.setSize(300, 200);
this.setContentPane(getJContentPane());
this.setTitle("Random Number");
}

private JPanel getJContentPane() {
if (jContentPane == null) {
jContentPane = new JPanel();
jContentPane.setLayout(new BorderLayout());
jContentPane.add(getJDesktopPane(), BorderLayout.CENTER);
}
return jContentPane;
}

private JDesktopPane getJDesktopPane() {
if (jDesktopPane == null) {
jLabel = new JLabel();
jLabel.setBounds(new Rectangle(13, 27, 268, 61));
jLabel.setHorizontalAlignment(SwingConstants.CENTER);
jLabel.setHorizontalTextPosition(SwingConstants.CENTER);
jLabel.setText("Please input a number then clink the button!");
jDesktopPane = new JDesktopPane();
jDesktopPane.add(jLabel, null);
jDesktopPane.add(getJTextField(), null);
jDesktopPane.add(getJButton(), null);
}
return jDesktopPane;
}

private JTextField getJTextField() {
if (jTextField == null) {
jTextField = new JTextField();
jTextField.setBounds(new Rectangle(93, 98, 106, 22));
}
return jTextField;
}

private JButton getJButton() {
if (jButton == null) {
jButton = new JButton();
jButton.setBounds(new Rectangle(99, 129, 93, 18));
jButton.setText("OK");
jButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent e) {
Random rand = new Random();
try{
jLabel.setText("Random number: " + rand.nextInt(Integer.parseInt(jTextField.getText())));
} catch (Exception ee) {
jLabel.setText("Please input a number then clink the button!");
}
}
});
}
return jButton;
}

public static void main(String[] args){
(new Test()).setVisible(true);
}

}