CIT 591 Swing Layout Examples Fall 2004, David Matuszek

Source code for the following examples is available as SwingLayoutExamples.zip.

http://www.cis.upenn.edu/~matuszek/cit591-2004/Pages/layout-examples.html

FlowLayout

import java.awt.*; import java.applet.*; import javax.swing.*; public class FlowLayoutExample extends JApplet { public void init () { getContentPane().setLayout(new FlowLayout ()); getContentPane().add(new JButton("One")); getContentPane().add(new JButton("Two")); getContentPane().add(new JButton("Three")); getContentPane().add(new JButton("Four")); getContentPane().add(new JButton("Five")); getContentPane().add(new JButton("Six")); } }

GridLayout
import java.awt.*; import java.applet.*; import javax.swing.*; public class GridLayoutExample extends JApplet { public void init() { Container c = getContentPane(); c.setLayout(new GridLayout(2, 4)); c.add(new JButton("One")); c.add(new JButton("Two")); c.add(new JButton("Three")); c.add(new JButton("Four")); c.add(new JButton("Five")); } }

BorderLayout (Applet)

import java.awt.*; import java.applet.*; import javax.swing.*; public class BorderLayoutExample extends JApplet { public void init() { Container c = getContentPane(); c.setLayout(new BorderLayout()); c.add(new JButton("One"), BorderLayout.NORTH); c.add(new JButton("Two"), BorderLayout.WEST); c.add(new JButton("Three"), BorderLayout.CENTER); c.add(new JButton("Four"), BorderLayout.EAST); c.add(new JButton("Five"), BorderLayout.SOUTH); c.add(new JButton("Six"), BorderLayout.SOUTH); } }

BorderLayout (Application)

import java.awt.*; // import java.applet.*; import javax.swing.*; public class BorderLayoutExample2 extends JFrame { public static void main(String[] args) { BorderLayoutExample2 frame = new BorderLayoutExample2(); frame.doSomething(); } void doSomething() { Container c = getContentPane(); c.setLayout(new BorderLayout()); c.add(new JButton("One"), BorderLayout.NORTH); c.add(new JButton("Two"), BorderLayout.WEST); c.add(new JButton("Three"), BorderLayout.CENTER); c.add(new JButton("Four"), BorderLayout.EAST); c.add(new JButton("Five"), BorderLayout.SOUTH); c.add(new JButton("Six"), BorderLayout.SOUTH); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); pack(); setVisible(true); } }

Nesting Panels

import java.awt.*; import javax.swing.*; public class FunWithPanels extends JFrame { public static void main(String[] args) { FunWithPanels frame = new FunWithPanels(); frame.doSomething(); } void doSomething() { Container c = getContentPane(); JPanel p1 = new JPanel(); p1.setLayout(new BorderLayout()); p1.add(new JButton("A"), BorderLayout.NORTH); p1.add(new JButton("B"), BorderLayout.WEST); p1.add(new JButton("C"), BorderLayout.CENTER); p1.add(new JButton("D"), BorderLayout.EAST); p1.add(new JButton("E"), BorderLayout.SOUTH); JPanel p2 = new JPanel(); p2.setLayout(new GridLayout(3, 2)); p2.add(new JButton("F")); p2.add(new JButton("G")); p2.add(new JButton("H")); p2.add(new JButton("I")); p2.add(new JButton("J")); p2.add(new JButton("K")); JPanel p3 = new JPanel(); p3.setLayout(new BoxLayout(p3, BoxLayout.Y_AXIS)); p3.add(new JButton("L")); p3.add(new JButton("M")); p3.add(new JButton("N")); p3.add(new JButton("O")); p3.add(new JButton("P")); c.setLayout(new BorderLayout()); c.add(p1, BorderLayout.CENTER); c.add(p2, BorderLayout.SOUTH); c.add(p3, BorderLayout.EAST); pack(); setVisible(true); } }