The WWJ SDK is a 3D graphics globe built on top of the Java OpenGL (JOGL) extensions. At the core of the WWJ class hierarchy is the WorldWindowGLCanvas, which is a subclass of GLCanvas. GLCanvas is in turn an Abstract Window Toolkit (AWT) component.
WWJ’s dependence on AWT is an obstacle for GIS developers who want to use WWJ in their Eclipse applications. As you probably know, Eclipse uses the Standard Widget Toolkit (SWT), which is incompatible with AWT.
With World Wind Java SDK, developers can embed World Wind technology in their own applications.