Issue number: Various -- I will update them

Obtained from:
Submitted by:   Travis
Reviewed by:

 Committing in .

 Added Files:
 	src/demos/misc/VersionInfo.java


This example uses the java.lang.Package API to query the version and
implementation information from the jogl.jar manifest.  We will be bumping
the manifest info for subsequent releases.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/../svn-server-sync/jogl-demos/trunk@169 3298f667-5e0e-4b4a-8ed4-a3559d26a5f4

1 files changed, 58 insertions, 0 deletions

diff --git a/src/demos/misc/VersionInfo.java b/src/demos/misc/VersionInfo.java
new file mode 100644
index 0000000..589d899
--- /dev/null
+++ b/src/demos/misc/VersionInfo.java
@@ -0,0 +1,58 @@
+
+package demos.misc;
+
+/**
+ * VersionInfo.java <BR>
+ * author: Travis Bryson <P>
+ *
+ * This program returns the version and implementation information for the Java 
+ * Bindings for OpenGL (R) implementation found in the CLASSPATH.  This information
+ * is also found in the manifest for jogl.jar, and this program uses the 
+ * java.lang.Package class to retrieve it programatically.  
+**/
+
+public class VersionInfo {
+    public VersionInfo() {
+	ClassLoader classLoader = getClass().getClassLoader();
+	pkgInfo(classLoader, "javax.media.opengl", "GL");
+    }
+
+    static void pkgInfo(ClassLoader classLoader,
+			String pkgName,
+			String className) {
+
+	try {
+	    classLoader.loadClass(pkgName + "." + className);
+
+	    Package p = Package.getPackage(pkgName);
+	    if (p == null) {
+		System.out.println("WARNING: Package.getPackage(" +
+				   pkgName +
+				   ") is null");
+	    }
+	    else {
+		System.out.println(p);
+		System.out.println("Specification Title = " +
+				   p.getSpecificationTitle());
+		System.out.println("Specification Vendor = " +
+				   p.getSpecificationVendor());
+		System.out.println("Specification Version = " +
+				   p.getSpecificationVersion());
+
+		System.out.println("Implementation Vendor = " +
+				   p.getImplementationVendor());
+		System.out.println("Implementation Version = " +
+				   p.getImplementationVersion());
+	    }
+	}
+	catch (ClassNotFoundException e) {
+	    System.out.println("Unable to load " + pkgName);
+	}
+
+	System.out.println();
+    }
+
+    public static void main(String[] args) {
+	new VersionInfo();
+    }
+}