Announcements

1
Announcements Review

• Last time GUI
• Survey
• JFrame container
• ImageIcon - image component
• Today
• JPanel container - groups components to control
  layout
• Layout options
• FlowLayout
• BorderLayout
• GridLayout

• Read
• Ch GU1 GU2 Cohoon Davidson
• Ch 14 Reges Stepp
• Lab 10 set game
• due 4/26
• Exam 2
• Wed 5/2 530-730

2
JFrame JPanelcontainers

• Components we have seen
• Jbutton, JRadioButton, JTextField, ImageIcon
• We put components into a container, i.e., a
  JFrame
• New container JPanel container
• containers group one or more components into
  logical parts fro layout and/or logical
  programming
• Lightweight JPanel container
• http//java.sun.com/j2se/1.4.2/docs/api/javax/swin
  g/JPanel.html

3
JFrame JPanel layout

• Within a JFrame or JPanel we lay components out
  in a style
• FlowLayout
• http//java.sun.com/j2se/1.4.2/docs/api/java/awt/F
  lowLayout.html
• GridLayout
• http//java.sun.com/j2se/1.4.2/docs/api/java/awt/G
  ridLayout.html
• BorderLayout
• http//java.sun.com/j2se/1.4.2/docs/api/java/awt/B
  orderLayout.html

4
Show JPanel and GridLayout in BlueJ

• Lets try it out.