import java.awt.*;

public class GridBag4 extends java.applet.Applet {

	GridBagConstraints constraints = new GridBagConstraints();

	void addGB( Component component, int x, int y  ) {
		constraints.gridx = x;  constraints.gridy = y;
		add ( component, constraints );
	}
	
	public void init() {
		setLayout( new GridBagLayout() );
		constraints.weightx = 1.0;
		constraints.weighty = 1.0;
		constraints.fill = GridBagConstraints.BOTH;

		int x, y;  // for clarity
		constraints.gridheight = 2; // Span two rows
		addGB( new Button("one"), 	x=0, y=0 );
		constraints.gridheight = 1; // set it back

		addGB( new Button("two"), 	x=1, y=0 );
		addGB( new Button("three"), x=2, y=0 );

		constraints.gridwidth = 2; // Span two columns
		addGB( new Button("four"), 	x=1, y=1 );
		constraints.gridwidth = 1; // set it back
	}
}