I'm a student andi have a little problem with my homework. we have to build a small archiv for example mp3 or doc files..... I have my gui ready and now i have a small problem, i have to develop a 2-3 tree. The tree isn't the problem. The Problem is, how can i insert the values in the tree? That the informations about file don't get lose. and how can i display the informations on the gui? give it at swing method like "excel-look"? How can i change the order?