public static void main(String[] args) {
		Display display = new Display();
		final Shell shell = new Shell(display);
		shell.setLayout(new FillLayout());
		Tree tree = new Tree(shell, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
		tree.setHeaderVisible(true);
		TreeColumn column1 = new TreeColumn(tree, SWT.LEFT);
		column1.setText("Column 1");
		column1.setWidth(200);
		TreeColumn column2 = new TreeColumn(tree, SWT.CENTER);
		column2.setText("Column 2");
		column2.setWidth(200);
		TreeColumn column3 = new TreeColumn(tree, SWT.RIGHT);
		column3.setText("Column 3");
		column3.setWidth(200);
		for (int i = 0; i < 4; i++) {
			TreeItem item = new TreeItem(tree, SWT.NONE);
			item.setText(new String[] { "item " + i, "abc", "defghi" });
			for (int j = 0; j < 4; j++) {
				TreeItem subItem = new TreeItem(item, SWT.NONE);
				subItem.setText(new String[] { "subitem " + j, "jklmnop", "qrs" });
				for (int k = 0; k < 4; k++) {
					TreeItem subsubItem = new TreeItem(subItem, SWT.NONE);
					subsubItem.setText(new String[] { "subsubitem " + k, "tuv", "wxyz" });
				}
			}
		}
		shell.pack();
		shell.open();
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch()) {
				display.sleep();
			}
		}
		display.dispose();
	}