In order to implement split layout, GWT - Google Web Toolkit gives us a functionality known as SplitLayoutPanel. In this layout you can arrang your components in a split fashion according to your own requirements. The following code will help you to add this in your java application using GWT - Google Web Toolkit.

Sample Code:


SplitLayoutPanel splitPanel = new SplitLayoutPanel(5);
splitPanel.setPixelSize(500, 400);
splitPanel.getElement().getStyle()
.setProperty("border", "3px solid #e7e7e7");
splitPanel.addNorth(new Label("Testing North"), 50);
splitPanel.addSouth(new Label("Testing South"), 50);
splitPanel.addEast(new Label("Testing East"), 100);
splitPanel.addWest(new Label("Testing West"), 100);

Best Of Luck.