JTree only display certain part of node

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norki - 21 Dec 2005 00:24 GMT

Hi,

Is there anyway to create a JTree with objects where only a certain
field from the object is displayed for the node.

I.e.

public someObject {
public String displayThis;
public int someKey;
}

I only want 'displayThis' field to appear in my GUI but still be able to
retrieve the Object from the node and get the 'someKey' value.

Any help appreciated,
norki

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BartCr - 21 Dec 2005 06:13 GMT

Write your own TreeCellRenderer
(http://java.sun.com/j2se/1.5.0/docs/api/javax/swing/tree/TreeCellRenderer.html)
and install it on your JTree (tree.setCellRenderer(myRenderer)).

Bart

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mera - 21 Dec 2005 08:18 GMT

> Hi,
>
[quoted text clipped - 13 lines]
> Any help appreciated,
> norki

You can write your own DefaultMutableTreeNode:

public class MyDefaultMutableTreeNode extends DefaultMutableTreeNode {

    public String displayThis;
    public int someKey;

    //constructor
    public GuiConsoleNode () {
    }//end constructor

    public GuiConsoleNode (String displayThis, int someKey) {
        super(displayThis);
this.someKey = someKey;
    }//end constructor

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mera - 21 Dec 2005 08:27 GMT

> > Hi,
> >
[quoted text clipped - 29 lines]
> this.someKey = someKey;
> }//end constructor

Made a mistake in the constructor name. This is the correct version:

public class MyDefaultMutableTreeNode extends DefaultMutableTreeNode {

     public String displayThis;
     public int someKey;

    //constructor
    public MyDefaultMutableTreeNode() {
    }//end constructor

    public MyDefaultMutableTreeNode(String displayThis, int someKey) {
        super(displayThis);
this.someKey = someKey;
    }//end constructor
}

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JTree only display certain part of node

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