Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com.
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Package Info
/*
* @(#)PackageInfo.java 1.11 02/04/01 15:03:56
*
* Copyright (c) 1996-2002 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met: -
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer. - Redistribution in binary
* form must reproduce the above copyright notice, this list of conditions and
* the following disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGES.
*
* You acknowledge that Software is not designed,licensed or intended for use in
* the design, construction, operation or maintenance of any nuclear facility.
*/
public class PackageInfo {
public PackageInfo() {
ClassLoader classLoader = getClass().getClassLoader();
pkgInfo(classLoader, "javax.vecmath", "Point3d");
pkgInfo(classLoader, "javax.media.j3d", "SceneGraphObject");
pkgInfo(classLoader, "com.sun.j3d.utils.universe", "SimpleUniverse");
//pkgInfo(classLoader, "com.sun.j3d.loaders.vrml97", "VrmlLoader");
}
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 PackageInfo();
}
}
