public class NumberTextField extends JFormattedTextField implements FocusListener
Provides a TextField component suitable for numbers. No error is produced when other characters are introduced, but just numbers are kept in the field after pressing enter or after focus is lost.
The component parses numbers according to the default Locale. For example when es_ES locale is active, a comma (",") is expected to separate the fractional part from the integer part, and when en_US is the default locale, then a dot (".") is expected to separate them.
The format of the accepted numbers can be modified by using the
getFormat() method. For example, to get a TextField that accepts
just integer numbes we would use:
NumberTextField field = new NumberTextField();
field.getFormat().setParseIntegerOnly(true);
In order to get a TextField that accepts double values with a minimum of two fractional digits and a maximum of five, we would use:
NumberTextField field = new NumberTextField();
field.getFormat().setMinimumFractionDigits(0);
field.getFormat().setMaximumFractionDigits(5);
NumberTextField commits the value to the Field when the focus is lost, while standard JFormattedTextField just commits the value to the Field when the user presses ENTER.
JFormattedTextField.AbstractFormatter, JFormattedTextField.AbstractFormatterFactoryJTextField.AccessibleJTextFieldJTextComponent.AccessibleJTextComponent, JTextComponent.DropLocation, JTextComponent.KeyBindingJComponent.AccessibleJComponentContainer.AccessibleAWTContainerComponent.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategyCOMMIT, COMMIT_OR_REVERT, PERSIST, REVERTnotifyActionDEFAULT_KEYMAP, FOCUS_ACCELERATOR_KEYaccessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOWBOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENTBOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WESTABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH| Constructor and Description |
|---|
NumberTextField() |
NumberTextField(double value,
int columns) |
NumberTextField(int columns) |
NumberTextField(int value,
int columns) |
| Modifier and Type | Method and Description |
|---|---|
void |
focusGained(FocusEvent e) |
void |
focusLost(FocusEvent e) |
double |
getDoubleValue()
Gets the value of this TextField as a
double primitive type. |
NumberFormat |
getFormat()
Gets the NumberFormat accepted by this text field.
|
int |
getIntValue()
Gets the value of this TextField as an
int primitive type. |
long |
getLongValue()
Gets the value of this TextField as a
long primitive type. |
void |
setValue(double value)
Sets the value of this TextField as a
double primitive type. |
void |
setValue(int value)
Sets the value of this TextField as an
int primitive type. |
void |
setValue(long value)
Sets the value of this TextField as a
long primitive type. |
commitEdit, getActions, getFocusLostBehavior, getFormatter, getFormatterFactory, getUIClassID, getValue, invalidEdit, isEditValid, processFocusEvent, processInputMethodEvent, setDocument, setFocusLostBehavior, setFormatter, setFormatterFactory, setValueactionPropertyChanged, addActionListener, configurePropertiesFromAction, createActionPropertyChangeListener, createDefaultModel, fireActionPerformed, getAccessibleContext, getAction, getActionListeners, getColumns, getColumnWidth, getHorizontalAlignment, getHorizontalVisibility, getPreferredSize, getScrollOffset, isValidateRoot, paramString, postActionEvent, removeActionListener, scrollRectToVisible, setAction, setActionCommand, setColumns, setFont, setHorizontalAlignment, setScrollOffsetaddCaretListener, addInputMethodListener, addKeymap, copy, cut, fireCaretUpdate, getCaret, getCaretColor, getCaretListeners, getCaretPosition, getDisabledTextColor, getDocument, getDragEnabled, getDropLocation, getDropMode, getFocusAccelerator, getHighlighter, getInputMethodRequests, getKeymap, getKeymap, getMargin, getNavigationFilter, getPreferredScrollableViewportSize, getPrintable, getScrollableBlockIncrement, getScrollableTracksViewportHeight, getScrollableTracksViewportWidth, getScrollableUnitIncrement, getSelectedText, getSelectedTextColor, getSelectionColor, getSelectionEnd, getSelectionStart, getText, getText, getToolTipText, getUI, isEditable, loadKeymap, modelToView, moveCaretPosition, paste, print, print, print, read, removeCaretListener, removeKeymap, removeNotify, replaceSelection, restoreComposedText, saveComposedText, select, selectAll, setCaret, setCaretColor, setCaretPosition, setComponentOrientation, setDisabledTextColor, setDragEnabled, setDropMode, setEditable, setFocusAccelerator, setHighlighter, setKeymap, setMargin, setNavigationFilter, setSelectedTextColor, setSelectionColor, setSelectionEnd, setSelectionStart, setText, setUI, updateUI, viewToModel, writeaddAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, updateadd, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate, validateTreeaction, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processHierarchyBoundsEvent, processHierarchyEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCyclepublic NumberTextField()
public NumberTextField(int columns)
public NumberTextField(double value,
int columns)
public NumberTextField(int value,
int columns)
public NumberFormat getFormat()
Gets the NumberFormat accepted by this text field. It can be used to change the format accepted by this text field.
Examples:
getFormat().setMinimumFractionDigits(0); getFormat().setMaximumFractionDigits(5);
getFormat().setMinimumFractionDigits(2); getFormat().setMaximumFractionDigits(2);
getFormat().setParseIntegerOnly(true);
getFormat().setGroupingUsed(true);
Note: digit grouping enabled means to display 2534313.23 as 2,534,313.23
public void setValue(double value)
Sets the value of this TextField as a
double primitive type.
public void setValue(int value)
Sets the value of this TextField as an
int primitive type.
public void setValue(long value)
Sets the value of this TextField as a
long primitive type.
public double getDoubleValue()
Gets the value of this TextField as a
double primitive type.
doublepublic int getIntValue()
Gets the value of this TextField as an
int primitive type.
intpublic long getLongValue()
Gets the value of this TextField as a
long primitive type.
longpublic void focusGained(FocusEvent e)
focusGained in interface FocusListenerpublic void focusLost(FocusEvent e)
focusLost in interface FocusListener