Create Three Level Tree : Tree « SWT « Java Tutorial

1. Java Tutorial
2. SWT
3. Tree

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;

public class TreeThreeLevel {

  public static void main(String[] args) {

    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    
    final Tree tree = new Tree(shell, SWT.BORDER);
    for (int i = 0; i < 3; i++) {
      TreeItem item = new TreeItem(tree, SWT.NONE);
      item.setText("item " + i);
      for (int j = 0; j < 3; j++) {
        TreeItem subItem = new TreeItem(item, SWT.NONE);
        subItem.setText("item " + i + " " + j);
        for (int k = 0; k < 3; k++) {
          TreeItem subsubItem = new TreeItem(subItem, SWT.NONE);
          subsubItem.setText("item " + i + " " + j + " " + k);
        }
      }
    }

    shell.setSize(400, 400);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}

17.57.Tree
	17.57.1.	Trees
	17.57.2.	Create a Tree
	17.57.3.	Populate tree lazily
	17.57.4.	Create Three Level Tree
	17.57.5.	Insert TreeItem to Tree
	17.57.6.	Add checkbox mark to the tree node
	17.57.7.	A multiselection tree
	17.57.8.	A single-selection tree