问个弱弱的问题

JOptionPane.showConfirmDialog(this, "email地址文件有错误",
"出现错误", JOptionPane.PLAIN_MESSAGE) ;
这个算么

楼上的,这个不算,喉喉,我说的是JFrame

建议你看看JAVA自带的DEMO程序！

程序太场了没时间看啊！
建议去看看 SWING吧

写个JFrame派生类。
在你要用的地方new一个就行。

To:射天狼
老大,我上周末才开始学java滴,以前一点也不知道,这几天光看demo了
swing也看了不少
不过好象还没看懂啊,汗.....
还有人嫌我写的程序长,这才几行啊,汗.....

对，楼上的说得没错，如果显示不了设置 setVisible(true)

JFrame jframe=new JFrame();
jframe.setSize(new Dimension(640, 480));
jframe.setVisible(true);

哪一位给个完整的代码啊,我刚看了几天java,对整体把握太模糊,程序总出错拜托拜托各位了

放在init()方法中，最好是放在该方法的最后

老大,呜呜呜,还是不行啊,我索性把我现在的代码全贴上来吧,有两个文件
一个是designer.java,一个是toolbox.java
toolbox是定义了一个简单的JFrame扩展类
Designer.java如下:
package module;/**
* @author Administrator
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.BufferedInputStream;
public class Designer extends JApplet implements ActionListener{
//ActionListener actlsnr;
ImageIcon formatIcon;
    ImageIcon controIcon;
    ToolBox toolbox;
protected String formatButtonFilename = "/images/format.gif";
protected String controlButtonFilename = "/images/control.gif";
public Designer(){

}
public void init(){
try{
javax.swing.SwingUtilities.invokeAndWait(new Runnable() {
                public void run() {
                    createGUI();
                    toolbox = new ToolBox();
                }
            });
}catch(Exception e){

}
}
private void createGUI(){
JFrame.setDefaultLookAndFeelDecorated(true);
formatIcon = loadImage(formatButtonFilename);
controIcon = loadImage(controlButtonFilename);
JButton btnFormat = new JButton("版式",formatIcon);
JButton btnControl = new JButton("控件",controIcon);
btnFormat.addActionListener(this);
btnControl.addActionListener(this);
btnFormat.setActionCommand("shwotoolbox");
JPanel panel1= new JPanel(new FlowLayout());
panel1.setLayout(new GridLayout(2,1)); panel1.add(btnFormat);
panel1.add(btnControl);
panel1.setPreferredSize(new Dimension(100, 20));
add(panel1);

}
    public void actionPerformed(ActionEvent e) {
        if ("shwotoolbox".equals(e.getActionCommand())) {
         toolbox.setVisible(true);
        }
    }
public void run(){

}

protected ImageIcon loadImage(String imageName) {
        String path = imageName ;
        int MAX_IMAGE_SIZE = 2400;  //Change this to the size of
                                    //your biggest image, in bytes.
        int count = 0;
        BufferedInputStream imgStream = new BufferedInputStream(
           this.getClass().getResourceAsStream(path));
        if (imgStream != null) {
            byte buf[] = new byte[MAX_IMAGE_SIZE];
            try {
                count = imgStream.read(buf);
                imgStream.close();
            } catch (java.io.IOException ioe) {
                System.err.println("Couldn't read stream from file: " + path);
                return null;
            }
            if (count <= 0) {
                System.err.println("Empty file: " + path);
                return null;
            }
            return new ImageIcon(Toolkit.getDefaultToolkit().createImage(buf));
        } else {
            System.err.println("Couldn't find file: " + path);
            return null;
        }
    }
}
ToolBox.java如下:/*
* Created on 2005-3-30
*
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
*/
package module;/**
* @author Administrator
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
import java.awt.*;
import javax.swing.*;public class ToolBox extends JFrame{
public ToolBox(){
String[] columnNames = {"First Name",
            "Last Name",
            "Sport",
            "# of Years",
            "Vegetarian"};
Object[][] data = {
{"Mary", "Campione",
"Snowboarding", new Integer(5), new Boolean(false)},
{"Alison", "Huml",
"Rowing", new Integer(3), new Boolean(true)},
{"Kathy", "Walrath",
"Knitting", new Integer(2), new Boolean(false)},
{"Sharon", "Zakhour",
"Speed reading", new Integer(20), new Boolean(true)},
{"Philip", "Milne",
"Pool", new Integer(10), new Boolean(false)}
};
JTable table = new JTable(data, columnNames);
table.setPreferredScrollableViewportSize(new Dimension(400, 70));
JScrollPane scrollPane = new JScrollPane(table);
this.getContentPane().add(scrollPane);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.pack();

//this.setVisible(true);
}
}出现的问题还是跟以前一样啊,在eclipse里面调试可以,点击第一个按纽,toolbox就能显示出来了
在网页里面就是不行啊.郁闷啊,郁闷啊,郁闷啊.................

问题解决了，还是不结贴
没有这一句就可以
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

调试易

问个弱弱的问题

解决方案 »