Java-jtree and JTable

Steps to use JTree:

1. Create a node of a tree as the head node (its child nodes are also the same method of creation): Defaultmutabletreenode Headnode = new Defaultmutabletreenode ("First level");
2. Then the node is added using the JTree Setmodel method (the other nodes are added via the head node), and the head node is added to display.
3. Create a sub-node, add a sub-node with the Add method of the head node, and then must be displayed with the UpdateUI () method of the JTree (refresh once per plus)

Java-jtree and JTable