In java how would I select and fire event on a node of jtree object...?

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In java how would I select and fire event(or events)on a node of the tree object in desktop application...?

What I have tried:

I have created the JTree object and placed some child node in it. But now i dont know how would I select a particular child node and fir the appropriate event on it. Please he

Posted 2-Jun-22 21:33pm

Member 12712527

Updated 3-Jun-22 2:18am

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Richard MacCutchan · Answer 1 · 2022-06-02T22:16:00

Solution 1

See How to Use Trees (The Java™ Tutorials Creating a GUI With Swing Using Swing Components)[^].

Posted 2-Jun-22 22:16pm

Richard MacCutchan

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Member 12712527 9-Jun-22 21:48pm

This program is file when there is only one window. but when there is two window it doesn't work out.
how...?
First of all I have defined two classes which decorates the window.
Secondly I have added these two classes to a splitterpane and added that splitterpane to another frame(main window).
Now in the first class i have defined a JTree object...
second window is left out.
Problem arises when i clicked one of the child node....
the base node is "family"
And two other child nodes are "father" and "mother"
Both in father and mother there is one child node named "create child"
Now when i clicked the create child node a new form is displayed asking for the name of the child node.
when i gave the name and clicked the okay button, it returns to main window by calling the main window's contructor.
Now in the constructor of the first class I have mentioned a static variable "pCreateRep" with a value of zero
Now when the " create child " node is clicked,
another form is displayed and the value of pCreateRep changes to one.
this value is returned to the first class and the decorated form's addObject is called...
I know that the value of the first form's components will be lost if another window opens.
for that i've made each component in the first class as static....
but still the addObject method doesn't work.... please help...

Richard MacCutchan 10-Jun-22 3:16am

It sounds like your design needs to be reworked. You should not need static classes to mange Window events.

Member 12712527 10-Jun-22 7:43am

I'm not using static classes but other variables are declared static. Sir without static how would i be able to retain the value of a variable...?

Richard MacCutchan 10-Jun-22 8:05am

All variables in your class objects retain their values. Using static variables is rarely necessary, and in some case will actually cause problems. As I said, you need to look at your design.

Member 12712527 10-Jun-22 7:45am

Sir same code if done on a single window, works but if done on more than one window fails

Dave Kreskowiak · Answer 2 · 2022-06-03T02:18:00

Solution 2

Your question makes no sense.

You do not "select and fire events". Objects raise events themselves based on their condition and what is happening to them. Events are the objects way of notifying your code that something interesting happened to it.

Posted 3-Jun-22 2:18am

Dave Kreskowiak