Swing Method & Constructors
| Table | JFrame Constructors & Methods |
| Constructor | Description |
| JFrame() | Create a new frame with no title |
| JFrame(String title) | Creates a new friend with a specific title |
| void setLocation (int x, int y) | Sets the position of the frame on screen at x and y coordinate The top left corner of the screen is 0.0 |
| void setLocationRelativeTo(Component c) | Centers the frame on screen if the parameter is null |
| void setResizeable(boolean value) | Sets whether or not the size of the frame can be change by the user. Default setting is true. |
| void setSize(int width, int height) | Sets the size of the frame to the specified width and height |
| void setJMenuBar(JMenuBar menu) | Sets the menu for the frame |
| Method | Descritpion |
| void pack() | Adjust the size of the frame to fit the components we've added |
| void setDefaultCloseOperation | Sets the action when the user closes the Frame |
| void setLayout(LayoutManager layout) | Sets the layout manager used to control how components are arranged when the frame is displayed |
| void add(Component c) | Adds the specified component to the frame |
| void setIconImage(Icon image) | Sets the icon displayed when the frame is minimized |
| void remove(Component c) | Removes the specified component from the frame |
| JMenuBar getJMenuBar() | Gets the menu for the frame |
| Table | JButton Constructors and Methods |
| Constructor | Description |
| JButton() | Create a new button |
| JButton(String text) | Creates a new button with a specified text |
| void setText(String text) | Sets the text displayed by the button |
| void setToolTipText(String text) | Sets the tooltip text that displayed if the user lets the mouse rest over the button |
| void setContentAreaFilled(boolean value) | The default setting is true. It determined whether or not the button's background should be filled or left empty |
| void setEnabled(boolean value) | Enable or disable the button. |
| void setRolloverEnabled(boolean value) | It enables or disables the rollover effect, hence causes the border to get thicker when the mouse moves over the button. |
| void setVisible(boolean value) | Shows or hides the button |
| Method | Description |
| String getText() | Returns the text that is displayed by a push of a button |
| doClick() | Triggers an action event for a button if the user clicks it |
| void setBorderPainted(boolean value) | Shows or hides the button's border |
| Table | JPanel Constructors and Methods |
| Constructor | Description |
| JPanel() | Create a new panel |
| JPanel(LayoutManager layout) | Creates a new panel with a specified layout manager |
| JPanel(boolean isDoubleBuffered) | Creates a new panel. If the parameter is true, the panel uses the double-buffering technique, which makes the graphic applications to display better |
| Method | Description |
| void setLocation(int x int y) | Sets the x & y coordinate of the frame |
| void add(Component c) | Adds the specified component to the panel |
| void remove(Component c) | Removes the specified component from the panel |
| void setSize(int width int height) | Sets the size of the frame with a specified with and height |
| void setLayout(LayoutManager layout) | Sets the layout manager used to control how components are arranged when the panel is displayed |
| void setToolTipText(String text) | Sets the tooltip text that's displayed if the user rests the mouse over an empty part of the panel |
| Table | JLabel Constructors and Methods |
| Constructor | Description |
| JLabel() | Create a new label with no text |
| JLabel(String text) | Creates a new label with a specified text |
| Method | Description |
| String getText() | Returns the displayed text |
| void setVisible(boolean value) | Shows or hides the label |
| void setToolTipText(String text) | Sets the tooltip text that displayed when the user rests the mouse over the label |
| void setText(String text) | Sets the displayed text by the label |
| Table | Used Event Classes | |
| Event Class | Listener Interface | Descritpion |
| ActionEvent | ActionListener | Performs an action when the user clicks a button or other components |
| ItemEvent | ItemListener | When the list of an item changes, such as combo box or list box |
| DocumentEvent | DocumentListener | It will be create when a text component is change, such as text field |
| WindowEvent | windowListener | It will be create when the status of the window frame changes |
| KeyEvent | KeyListener | It will be create when the user presses a key on the keyboard |
| MouseEvent | MouseListener | It will be create when the user does something with the mouse |
| FocusEvent | FocusListener | Create when a component receive or loses focus |
| Table | Event Listener Interfaces | |
| Listener Interface | Method | Description |
| ActionListener(ActionEvent e) | void actionPerformed | Calls the method when an action even occurs, such as a push of a button |
| WindowListener | void windowClosed(WindowEvent e) | Calls the method when a window has been closed |
| void windowActivated(WindowEvent e) | Calls the method when the window is activated | |
| void windowClosing(WindowEvent e) | Calls the method when the user attempts to close the window | |
| void windowIconified(WindowEvent e) | Calls the method when the window is changed | |
| void windowDeactivated(WindowEvent e) | Calls the method when the window is deactivated | |
| void windowOpened(WindowEvent e) | Calls the method when the window is minimized to an icon | |
| DocumentListener | void removeUpdate(DocumentEvent e) | Calls the method when text is deleted |
| void changeUpdate(DocumentEvent e) | Calls the method when text is changed | |
| void insertUpdate(DocumentEvent e) | Calls the method when text is inserted | |
| FocusListener | void focusGained(FocusEvent e) | Calls the method when the component gain focus |
| FocusListener | void focusLost(FocusEvent e) | Calls the method when the component looses focus |
| KeyListener | void keyPressed(KeyEvent e) | Calls the method when the user presses a key |
| void keyReleased(KeyEvent e) | Calls the method when the user releases a key | |
| void keyTyped(KeyEvent e) | Calls the method when the user types a key | |
| MouseListener | void mouseClicked(MouseEvent e) | Calls the method when the user clicks the mouse button |
| void mouseEntered(MouseEvent e) | Calls the method when the mouse moves over a component | |
| void mousePressed(MouseEvent e) | Calls the method when the use presses the mouse button | |
| void mouseExited(MouseEvent e) | Calls the method when the mouse leaves a component | |
| void mouseReleased(MouseEvent e) | Calls the method when the user releases the mouse button |
| Table | JTextField Constructors and Methods |
| Constructor | Description |
| JTextField() | Creates a new text field |
| JTextField(String text, int clos) | Creates a new text field with a specified initial text value and the width |
| JTextfield(int cols) | Creates a new text field with a specified width |
| Method | Description |
| String getText() | Gets the text value that is entered into the field |
| void setText() | Sets the text value for the field |
| void setColumns(int cols) | Sets the size of the text field |
| void setEditable(boolean value) | If the value is set to false, text field can not be edit |
| void requestFocus() | Asks for the focus to be moved to the text field |
| void setToolTipText(String text) | If the user rests the mouse over the text field, the tooltip text will be displayed |
| Table | JTextArea Constructors and Methods |
| Constructor | Description |
| JTextArea() | Creates a new text area |
| JTextArea(String text, int rows, int cols) | Creates a new text area with a specified initial text value, that can display the specified number of rows and columns |
| JTextArea(int rows, int cols) | Creates a new text area that can display the specified number of rows and columns |
| Method | Description |
| String getText() | Gets the text value that is entered into the field |
| int getLineCount() | Gets the number of lines currently in the text value |
| void append(String text) | Adds the specified text to the end of the text area's field |
| void requestFocus() | Asks for the focus to be moved to the text field |
| void replaceRange(String text, int start, int end) | Replaces text indicated by the start and end with a specified text |
| void insert(String text, int post) | Inserts a specified text at the specified position |
| void setEditable(boolean value) | If it's false, the text field can not be edit |
| void setColumns(int cols) | Sets the width of the text area |
| void setText(String text) | Sets the field's text value |
| void setLineWrap(boolean value) | Lines wrap if the text doesn't fit on one line, only if value is true |
| void setWrapStyleWord() | if true, text wraps at word boundaries |
| void setToolTipText(String text) | Sets the tooltip text if the user rests the mouse pointer over the text field |
| Table | JCheckBox Constructor and Methods |
| Constructor | Description |
| JCheckBox() | Creates a new check box, initially unchecked |
| JCheckBox(String text) | Creates a new check box with a specified text display |
| JCheckBox(String text, boolean selected) | Creates a new check box with a specified text, if it's true the check box will be checked |
| Method | Description |
| String getText() | Gets the displayed text by the check box |
| Boolean isSelected() | Returns true if box is checked otherwise returns false |
| void addActionListener(ActionListener listener) | Adds the action listener to listen for the event |
| void addItemListener(ItemListener listener) | Adds the item listener to listen for the event |
| void setSelected(boolean value) | The box will be checked if value true otherwise it's unchecked |
| void setToolTipText(String text) | Sets the tooltip text if mouse is rest over the check box |
| void setText(String text) | set the text for the check box |
| Table | JRadioButton Constructor and Methods |
| Constructor | Description |
| JRadioButton() | Creates a new radio button with no text |
| JRadioButton(String txt) | Creates a new radio button with a specified text |
| Method | Description |
| void setText(String txt) | Sets the text for the radio button |
| String getText() | Gets the text displayed by the radio button |
| void addActionListener(ActionListener listener) | Adds an action listener to listen for the events |
| void addItemListener(ItemListener listener) | Adds an item listener to listen for the vents |
| void setSelected(boolean value) | If value is true, radio button will be selected |
| Boolean isSelected() | Returns true if radio button is selected otherwise returns false |
| void setToolTipText(String txt) | Sets the tooltip text displayed by resting the mouse over the radio button |
| Table | JScrollPane Constructors and Fields |
| Constructor | Description |
| JScrollPane(Component c) | Creates a scroll pane for the specified component |
| JScrollPane(Component, int vert, int hor) | Creates a scroll pane for the specified component with vertical and horizontal bar |
| Field | Description |
| VERTICAL_SCROLLBAR_ALWAYS | Always adds a vertical scroll bar |
| VERTICAL_SCROLLBAR_AS_NEVER | Never adds a vertical scroll bar |
| VERTICAL_SCROLLBAR_AS_NEEDED | Adds a vertical bar whenever is needed |
| HORIZONTAL_SCROLLBAR_ALWAYS | Always add a horizontal scroll bar |
| HORIZONTAL_SCROLLBAR_NEVER | Never adds a horizontal scroll bar |
| HORIZONTAL_SCROLLBAR_AS_NEEDED | Adds a horizontal scroll bar whenever is needed |
| Table | JSlider Constructors and Methods |
| Constructor | Description |
| JSlider() | Create a new slider |
| JSlider(int min, int max) | Creates a new slider with a specified minimum and maximum values. |
| JSlider(int min, int max, int val) | Creates a new slider with a specified minimum, maximum, and initial values |
| JSllider(int orientation, int max, int val) | Creates a new slider with a specified minimum, maximum, and initial values. The orientation can either be JSlider.HORIZONTAL or JSlider.VERTICAL |
| Method | Description |
| int getValue() | Gets the value indicated by the currently position |
| void setFont() | Sets the font of the text with the slider |
| void addChangeListener(ChangeListener listener) | Ass a change listener to listen for change events |
| void setMajorTickSpacing(int val) | Sets the interval for major tick marks |
| void setInvert(boolean val) | If value is true, inverts the slider's direction so the max value will be on the left and the min value will be on the right |
| void setMinimum(int val) | Sets the minimum value |
| void setMaximum(int val) | Sets the maximum value |
| setOrientation(int orientation) | Sets the orientation, values are JSlider.HORIZONTAL and JSlider.VERTICAL |
| void setPaintLabels(boolean val) | If the value is true, the tick labels are shown |
| void setSnapToTicks(boolean value) | If the value is true, the value returned by the getValue method is rounded to the nearest tick mark |
| void setToolTipText | Sets the tooltip text that is displayed if the user rests the mouse pointer over the slider |
| void setMinorTickSpacing(int val) | Sets the interval for minor tick marks |
| Table | JList Constructors and Methods |
| Constructors | Description |
| JList() | Creates an empty list |
| JList(Vector[] val) | Creates a list and fills it with the values that is in the vector |
| JList(ListModel list) | Creates a list that uses a specified list model |
| JList(Ojbect[] val) | Creates a list and fills it with the values in the array |
| void clearSelection() | Clears all the selections |
| Method | Description |
| int getSelectedIndex() | Returns the index of the first selected item, if no items are selected -1 will be returned |
| int[] getSelectedIndexes() | Returns an array with the index of each selected item, if the array is empty no items are selected |
| boolean isSelectionEmpty() | It returns true if no items are selected |
| boolean isSelectedIndex(int index) | It will return true if the item at the specified index is selected |
| Object getSelectedValue() | It returns the first selected item |
| Object[] getSelectedValues() | Returns an array with all the selected items |
| void setFixedCellHeight(int height) | Sets the height of each row |
| void setFixedCellWidth(int wid) | Sets the width of each row |
| void setVisibleRowCount(int c) | Sets the number of rows that is displayed by the list |
| void setSelectionMode(int m) | It sets the selection mode. Values that are allowed are: ListSelectionModel.SINGLE_SELECTION, ListSelectionModel.SINGLE_INTERVAL_SELECTION, and ListSelectionModel.MULTIPLE_INTERVAL_SELECTION |
| void setSelectedIndices(int[] in) | Selects the items at the indices specified in the array |
| void setSelectedIndex(int index) | Selects the item at a specified index |
| Table | JComboBox Constructors and Methods |
| Constructor | Description |
| JComboBox() | Creates an empty combo box |
| JComboBox(Vector[] val) | Creates a combo box and fills it with the values in the vector |
| JComboBox(Object[] val) | Creates a combo box and fills it with the values in the array |
| Method | Description |
| Object getItemAt(int index) | Returns the item at a specified index |
| int getSelectedIndex() | Returns the index of the selected item |
| int getItemCount() | Returns the number of item in the combo box |
| Object getSelectedItem() | Returns the selected item |
| Boolean isEditable() | Indicates whether the combo box's text is editable or not |
| void addActionListener(ActionListener listener) | Adds an action listener to the combo box to listen for events |
| void addItem(Object item) | Adds the item to the combo box |
| void addItemListener(ItemListener listener) | Adds an item listener to the combo box |
| void removeItem(Object item) | Removes a specified item |
| void removeAllItems() | Removes all the items from the combo box |
| void removeItemAt(int index) | Removes an item at a specified index |
| void setEditable(boolean val) | If val is true, combo box's text field is editable |
| void setSelectedIndex(int index) | Selects an item at a specified index |
| void setSelectedItem(Object item) | Selects a specified item |
| void setMaximumRowCount(int c) | Sets the number of rows displayed when the combo box list drops down |
| void insertItemAt(Object item, int index) | Inserts an item at a specified index |
