Java tutorial
package com.google.gwt.sample.stockwatcher.client; import com.google.gwt.dom.client.Style.Unit; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.Composite; import com.google.gwt.user.client.ui.RootLayoutPanel; import com.google.gwt.user.client.ui.SplitLayoutPanel; public class SplitPanel extends Composite { SplitLayoutPanel panel = new SplitLayoutPanel(); public SplitPanel() { RootLayoutPanel.get().setHeight(Window.getClientHeight() - Menu.HEIGHT - Footer.HEIGHT + "px"); RootLayoutPanel.get().setWidth(200 + "px"); RootLayoutPanel.get().getElement().getStyle().setTop(Menu.HEIGHT, Unit.PX); RootLayoutPanel.get().getElement().getStyle().setLeft(0, Unit.PX); RootLayoutPanel.get().getElement().getStyle().setBackgroundColor("rgba(255,255,255,1)"); RootLayoutPanel.get().add(panel); } }