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AWT Frame Class
Introduction
The class Frame is a top level window with border and title. It uses BorderLayout as default layout manager.
Class declaration
Following is the declaration for java.awt.Frame class:
public class Frame extends Window implements MenuContainer
Field
Following are the fields for java.awt.Frame class:
static float BOTTOM_ALIGNMENT -- Ease-of-use constant for getAlignmentY.
static int CROSSHAIR_CURSOR -- Deprecated. replaced by Cursor.CROSSHAIR_CURSOR.
static int DEFAULT_CURSOR -- Deprecated. replaced by Cursor.DEFAULT_CURSOR.
static int E_RESIZE_CURSOR -- Deprecated. replaced by Cursor.E_RESIZE_CURSOR.
static int HAND_CURSOR -- Deprecated. replaced by Cursor.HAND_CURSOR.
static int ICONIFIED -- This state bit indicates that frame is iconified.
static int MAXIMIZED_BOTH -- This state bit mask indicates that frame is fully maximized (that is both horizontally and vertically).
static int MAXIMIZED_HORIZ -- This state bit indicates that frame is maximized in the horizontal direction.
static int MAXIMIZED_VERT -- This state bit indicates that frame is maximized in the vertical direction.
static int MOVE_CURSOR -- Deprecated. replaced by Cursor.MOVE_CURSOR.
static int N_RESIZE_CURSOR -- Deprecated. replaced by Cursor.N_RESIZE_CURSOR.
static int NE_RESIZE_CURSOR -- Deprecated. replaced by Cursor.NE_RESIZE_CURSOR.
static int NORMAL -- Frame is in the "normal" state.
static int NW_RESIZE_CURSOR -- Deprecated. replaced by Cursor.NW_RESIZE_CURSOR.
static int S_RESIZE_CURSOR -- Deprecated. replaced by Cursor.S_RESIZE_CURSOR.
static int SE_RESIZE_CURSOR -- Deprecated. replaced by Cursor.SE_RESIZE_CURSOR.
static int SW_RESIZE_CURSOR -- Deprecated. replaced by Cursor.SW_RESIZE_CURSOR.
static int TEXT_CURSOR -- Deprecated. replaced by Cursor.TEXT_CURSOR.
static int W_RESIZE_CURSOR -- Deprecated. replaced by Cursor.W_RESIZE_CURSOR.
static int WAIT_CURSOR -- Deprecated. replaced by Cursor.WAIT_CURSOR.
Class constructors
S.N. | Constructor & Description |
---|---|
1 | Frame() Constructs a new instance of Frame that is initially invisible. |
2 | Frame(GraphicsConfiguration gc) Constructs a new, initially invisible Frame with the specified GraphicsConfiguration. |
3 | Frame(String title) Constructs a new, initially invisible Frame object with the specified title. |
4 | Frame(String title, GraphicsConfiguration gc) Constructs a new, initially invisible Frame object with the specified title and a GraphicsConfiguration. |
Class methods
S.N. | Method & Description |
---|---|
1 | void addNotify() Makes this Frame displayable by connecting it to a native screen resource. |
2 | AccessibleContext getAccessibleContext() Gets the AccessibleContext associated with this Frame. |
3 | int getCursorType() Deprecated. As of JDK version 1.1, replaced by Component.getCursor(). |
4 | int getExtendedState() Gets the state of this frame. |
5 | static Frame[] getFrames() Returns an array of all Frames created by this application. |
6 | Image getIconImage() Returns the image to be displayed as the icon for this frame. |
7 | Rectangle getMaximizedBounds() Gets maximized bounds for this frame. |
8 | MenuBar getMenuBar() Gets the menu bar for this frame. |
9 | int getState() Gets the state of this frame (obsolete). |
10 | String getTitle() Gets the title of the frame. |
11 | boolean isResizable() Indicates whether this frame is resizable by the user. |
12 | boolean isUndecorated() Indicates whether this frame is undecorated. |
13 | protected String paramString() Returns a string representing the state of this Frame. |
14 | void remove(MenuComponent m) Removes the specified menu bar from this frame. |
15 | void removeNotify() Makes this Frame undisplayable by removing its connection to its native screen resource. |
16 | void setCursor(int cursorType) Deprecated. As of JDK version 1.1, replaced by Component.setCursor(Cursor). |
17 | void setExtendedState(int state) Sets the state of this frame. |
18 | void setIconImage(Image image) Sets the image to be displayed as the icon for this window. |
19 | void setMaximizedBounds(Rectangle bounds) Sets the maximized bounds for this frame. |
20 | void setMenuBar(MenuBar mb) Sets the menu bar for this frame to the specified menu bar. |
21 | void setResizable(boolean resizable) Sets whether this frame is resizable by the user. |
22 | void setState(int state) Sets the state of this frame (obsolete). |
23 | void setTitle(String title) Sets the title for this frame to the specified string. |
24 | void setUndecorated(boolean undecorated) Disables or enables decorations for this frame. |
Methods inherited
This class inherits methods from the following classes:
java.awt.Window
java.awt.Container
java.awt.Component
java.lang.Object
Frame Example
Create the following java program using any editor of your choice in say D:/ > AWT > com > tutorialspoint > gui >
AwtContainerDemo.javapackage com.tutorialspoint.gui; import java.awt.*; import java.awt.event.*; public class AwtContainerDemo { private Frame mainFrame; private Label headerLabel; private Label statusLabel; private Panel controlPanel; private Label msglabel; public AwtContainerDemo(){ prepareGUI(); } public static void main(String[] args){ AwtContainerDemo awtContainerDemo = new AwtContainerDemo(); awtContainerDemo.showFrameDemo(); } private void prepareGUI(){ mainFrame = new Frame("Java AWT Examples"); mainFrame.setSize(400,400); mainFrame.setLayout(new GridLayout(3, 1)); mainFrame.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent windowEvent){ System.exit(0); } }); headerLabel = new Label(); headerLabel.setAlignment(Label.CENTER); statusLabel = new Label(); statusLabel.setAlignment(Label.CENTER); statusLabel.setSize(350,100); msglabel = new Label(); msglabel.setAlignment(Label.CENTER); msglabel.setText("Welcome to TutorialsPoint AWT Tutorial."); controlPanel = new Panel(); controlPanel.setLayout(new FlowLayout()); mainFrame.add(headerLabel); mainFrame.add(controlPanel); mainFrame.add(statusLabel); mainFrame.setVisible(true); } private void showFrameDemo(){ headerLabel.setText("Container in action: Frame"); final Frame frame = new Frame(); frame.setSize(300, 300); frame.setLayout(new FlowLayout()); frame.add(msglabel); frame.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent windowEvent){ frame.dispose(); } }); Button okButton = new Button("Open a Frame"); okButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { statusLabel.setText("A Frame shown to the user."); frame.setVisible(true); } }); controlPanel.add(okButton); mainFrame.setVisible(true); } }
Compile the program using command prompt. Go to D:/ > AWT and type the following command.
D:\AWT>javac com\tutorialspoint\gui\AwtContainerDemo.java
If no error comes that means compilation is successful. Run the program using following command.
D:\AWT>java com.tutorialspoint.gui.AwtContainerDemo
Verify the following output