Java Gui Builder is a Free and simple WYSIWYG Java GUI Builder. You can easily create User Interface and AWT components. You can also generate codes for Applets and frames. Java Gui Builder provides a custom layout to arrange the components at desired positions. With Java Gui Builder you can easily create your Applets instead of writing huge code.
Java Gui Builder is around 300KB in size. You can use Java Gui Builder when you need to design something very soon. Later you can also change the generated .java file. Java Gui Builder will be very useful for students who are learning Java. I feel this tool may not be really very helpful for high end java applications.