Use Horizontal Split Panel
package com.java2s.gwt.client; import com.google.gwt.core.client.EntryPoint; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.ClickListener; import com.google.gwt.user.client.ui.RootPanel; import com.google.gwt.user.client.ui.Widget; import com.google.gwt.user.client.ui.HTML; import com.google.gwt.user.client.ui.HorizontalSplitPanel; public class GWTClient implements EntryPoint{ public void onModuleLoad() { HorizontalSplitPanel hSplit = new HorizontalSplitPanel(); hSplit.setLeftWidget(new HTML("...")); hSplit.setRightWidget(new HTML( "This is some text to make the right side of this " + "splitter look a bit more interesting... " + "This is some text to make the right side of this " + "splitter look a bit more interesting... " + "This is some text to make the right side of this " + "splitter look a bit more interesting... " + "This is some text to make the right side of this " + "splitter look a bit more interesting... ")); hSplit.setSize("100%", "450px"); RootPanel.get().add(hSplit); } }