Java Code:
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;

public class LayoutClass {

  public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setSize(200, 200);
    shell.setText("Layout Example");
    GridLayout gridLayout = new GridLayout();
    gridLayout.numColumns = 4;
    shell.setLayout(gridLayout);

    for (int loopIndex = 0; loopIndex < 28; loopIndex++) {
      Label label = new Label(shell, SWT.SHADOW_NONE);
      label.setText("Label " + loopIndex);
    }

    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}