问题
I'm a new Java Swing programer, I've got java basic. I want to create a form include jtree, jtree can be resized horizontal by mouse when application is running. How can I do that? Thanks for your help!
来源：https://stackoverflow.com/questions/19854885/how-to-resize-horizontal-jtree-java-swing-by-mouse-when-application-is-running