TopLevelDemo 6.0.290.11 is free to download from our software library. The latest installer takes up 34 KB on disk. This free program is an intellectual property of The Java(tm) Tutorial: Sun Microsystems, Inc. Our antivirus scan shows that this download is malware free. The program lies within Development Tools, more precisely IDE. The most popular version of the TopLevelDemo is 6.0.
From the developer:
Each program that uses Swing components has at least one top-level container. This top-level container is the root of a containment hierarchy the hierarchy that contains all of the Swing components that appear inside the top-level container. As a rule, a standalone application with a Swing-based GUI has at least one containment hierarchy with a JFrame as its root.
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