江湖告急：运行出错！

[evilgod]

小弟刚学java,用java Hello 命令运行hello,world!程序是总会出错：
Registry key 'software\javasoft\java runtime environment\currentversion'
has value '1.3',but '1.4' required
Error: could not find java.dll
Error: could not java2 runtime environment.
我装的是1.4版啊，另外环境变量好象也没什么问题啊！
哪位大哥来指点一下！

[Little_qd]

可能有其他集成开发环境自带了1.3
都卸了重装1.4试试

[evilgod]

我猜大概也是，我在网上下了个4.0的jbuilder装了（9.0的刚找到，正在下），不过卸了重装好象用处不大。

[wangzhouyu]

修改注册表就可以了
software\javasoft\java runtime environment\currentversion

[evilgod]

改注册表似乎不行，我试过了，装了jb9.0问题就解决了。但是另外一个简单的程序无法通过编译，大家来帮我看看：
HelloPro.java文件：
import java.awt.*;
public class HelloPro{
public HelloPro(){
HelloFrame frame=new HelloFrame();
Dimension screenSize=Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize=frame.getSize();
frame.setLocation((screenSize.width-frameSize.width)/2, (screenSize.height-frameSize.height)/2);
frame.setVisible(true);
}
public static void main(String[] args){
new HelloPro();
}
}
HelloFrame文件：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class HelloFrame extends JFrame{
private JPanel contentPane;
private BorderLayout borderLayout1=new BorderLayout();
private JLabel helloLabel=new JLabel();

public HelloFrame(){
try{jbInit();} catch(Exception e) {e.printStackTrace();}
}

private void jbInit() throws Exception{
contentPane=(JPanel)this.getContentPane();
contentPane.setLayout(borderLayout1);
this.setSize(new Dimension(400,300));
this.setTitle("Hello窗口");
helloLabel.setFont(new java.awt.Font("Dialog",0,25));
helloLabel.setHorizontalAlignment(SwingConstants.CENTER);
helloLabel.setText("Hello 欢迎进入 J2SE");
contentPane.add(helloLabel,BorderLayout.CENTER);
}

proteced void processWindowEvent(WindowEvent e){
if(e.getID()==WindowEvent.WINDOW_CLOSING){
System.exit(0);
}
}
我输入javac HelloPro.java编译总是说3个error
是我编译的方法不对还是程序有问题，大虾们指点一下啊

[evilgod]

顶一下