Top-level Container: javax.swing.JFrame |
w = | new JFrame(); |
Constructor |
w = | new JFrame(t); |
Constructor. Sets titlebar to t. |
| w.setTitle(t); |
Sets titlebar text to t |
| w.setDefaultCloseOperation(opt); |
JFrame.EXIT_ON_CLOSE terminates program when close box clicked. |
| w.setVisible(true/false); |
Make visible (and start GUI thread) or hide. |
| w.pack(); |
Calculates layout on all inner containers and sets size of JFrame. |
| w.setContentPane(cont); |
Sets the content pane - common to pass a JPanel here. |
cont = | w.getContentPane(); |
Returns the window's content pane. |
| w.setJMenuBar(mb); |
Adds a JMenuBar. |
| w.setResizable(false); |
Prevent user from resizing window. |
| w.setLocation(x, y); |
Positions window's top left corner at screen coordinates (x, y). |
| w.setSize(w, h); |
Sets window size, but use layouts and pack() instead. |
| w.show(); |
Deprecated. Use w.setVisible(true) . |
| w.hide(); |
Deprecated. Use w.setVisible(false) . |
Top-level Containers: Dialogs: JOptionPane, JFileChooser, JColorChooser, JDialog |
Low-level Container supporting layouts - JPanel |
p = | new JPanel(); |
Creates new JPanel |
| p.setLayout(layout); |
Sets the panel's layout. |
| p.add(widget); |
Add widget to next position - FlowLayout, GridLayout, BoxLayout. |
| p.add(widget, constraint); |
Add widget at position constraint = BorderLayout, GridbagLayout). |
Low-level Containers - special purpose - JSrollPane, JTabbedPane |
scr = | new JScrollPane(textarea); |
Surrounds textarea with scrollbars as needed. |
tp = | new JTabbledPane(); |
Constructor. Creates new tabbed pane. |
tp = | new JTabbledPane(place); |
Constructor. placement is JTabbedPane.TOP (default), BOTTOM, LEFT, or RIGHT. |
tp = | new JTabbledPane(place, ovrfl); |
Constructor. ovrfl tells what to do if too many tabs: JTabbedPane.WRAP_TAB_LAYOUT or .SCROLL_TAB_LAYOUT. |
| tp.addTab(title, comp); |
Adds tab labelled with string title which displays comp (usually JPanel). |
| tp.addTab(title, icon, comp); |
Used string and icon for tab label. |