Adding drag-and-drop support to JTree s has been covered already in Java Tip 97: Add Drag and Drop to Your JTrees. I encourage you to read that tip first to get a good understanding of the drag ...

PhiLho and corgrath provide Java code examples illustrating conversion of a background color to a transparent background for an image in the StackOverflow thread How to make a color transparent in ...

For those who start out coding, the Java programming career path typically progresses in this way. The first job is junior developer, next step is a level up as a senior developer. Next will be team ...