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javaswingmouseeventjtree

Java Jtree mouseEvent if nothing is selected

I am trying to figure out how to code a event that, if clicked in a Swing JTree and the mouse does not click anything in the tree, to get a println that says "nothing".

Say I have a tree 'info_tree' with an AWT.event.Mouwesvent as such:

private void info_treeMouseClicked(java.awt.event.MouseEvent evt) {   
    if(info_tree.getSelectionPath() /*something along the lines of is empty or if !info_tree.getSelectionPath().isEmpty()*/
       ){system.out.println("Nothing");
      }else{
          system.out.println("Something");
      }
}

I can't find anything to compare a selectedPath or element of a tree.

Solution

  • You may wish to try

    If (info_tree.getSelectionPath()==null)

    But,then you may want to switch your output lines around. Because that as-is is a true/false condition. If false it'll goto else. That could solve it as well.