的Java 3D的Hello World - 罐冻结 [英] Java 3D Hello World - Jar freeze

问题描述

大家好
我下面本教程以建立我的第一个Java 3D应用程序。我包括在我的项目的 Java3D的库和我的 DllLoader 提取（从classpath中的jar的位置）并加载类的 j3dcore-ogl.dll

Hi guys
I'm following this tutorial to build my first Java 3D application. I included in my project the java3D libraries and my DllLoader class that extracts (from the classpath to the jar's location) and loads the j3dcore-ogl.dll:

public class DllLoader {

    private DllLoader() {
    }

    public static void extractAndLoad(String dll) throws IOException {
        int aux = dll.lastIndexOf('/');
        if (aux == -1) {
            aux = dll.lastIndexOf('\\');
        }
        File dllCopy = new File((aux == -1) ? dll : dll.substring(aux + 1));
        try {
            System.load(dllCopy.getAbsolutePath());
        } catch (UnsatisfiedLinkError e1) {
            try {
                DllLoader.copyFile(DllLoader.class.getResourceAsStream(dll), dllCopy);
                System.load(dllCopy.getAbsolutePath());
            } catch (IOException e2) {
            }
        }
    }

    private static void copyFile(InputStream pIn, File pOut) throws IOException {
        if (!pOut.exists()) {
            pOut.createNewFile();
        }
        DataInputStream dis = new DataInputStream(pIn);
        FileOutputStream fos = new FileOutputStream(pOut);
        byte[] bytes = new byte[1024];
        int len;
        while ((len = dis.read(bytes)) > 0) {
            fos.write(bytes, 0, len);
        }
        dis.close();
        fos.close();
    }
}

一切工作正常，如果我从NetBeans中运行该项目，如果我打开命令行的罐 Java的罐子Hello3DWorld.jar。
我的问题是这样的：如果我运行jar用一个简单的双击没有任何反应。这个dll附近出现罐子，但帧永远不会出现。
把一些 JOptionPane.showMessageDialog（）在我的code，找出什么错误，我意识到，执行抛出也不例外。
这只是冻结就像一个循环加载DLL后。照片你能帮助我理解为什么只挂通过双击罐子，什么问题？

Everything works fine if I run the project from Netbeans or if i open the jar from the command line with java -jar Hello3DWorld.jar".
My problem is this: if I run the jar with a simple double click nothing happens. The dll appear near the jar but the frame never appear.
Putting some JOptionPane.showMessageDialog() in my code to find out what's going wrong, I realized that the execution throws no exception.
It just freezes like in a loop after loading the dll.
Can you help me to understand why it hangs only by double clicking the jar and what's the problem?

推荐答案

解决我的问题：D
有在Windows注册表中的错误... 这是解决方案：
1）运行的 注册表编辑器
2）发现的 HKEY_CLASSES_ROOT \ jar文件\壳\开放\命令
3）请确保该路径的 javaw.exe的正确

Solved my problem :D
There were an error in the Windows Registry... this is the solution:
1) run regedit
2) find HKEY_CLASSES_ROOT\jarfile\shell\open\command
3) make sure the path for javaw.exe is correct

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