uk.ac.starlink.util.gui.MemoryMonitor

All Implemented Interfaces:: ImageObserver, MenuContainer, Serializable

public class MemoryMonitor extends JComponent

Component which displays JVM memory usage. Clicking on it will call System.gc().

Since:

22 Dec 2009

Author:

Mark Taylor

See Also:

Nested Class Summary

Nested classes/interfaces inherited from class JComponent
JComponent.AccessibleJComponent

Nested classes/interfaces inherited from class Container
Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class Component
Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy
Field Summary

Fields inherited from class JComponent
listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class Component
accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface ImageObserver
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH
Constructor Summary

Constructors

Constructor

Description

MemoryMonitor()

Constructor.
Method Summary

Modifier and Type

Method

Description

Color[]

getColors()

Returns the colour scheme.

boolean

getReverse()

Returns whether bar movement is in the opposite sense.

boolean

getShowText()

Returns whether text is being displayed.

String

getText()

Returns the text which is painted onto this component.

Timer

getTimer()

Returns the timer which performs regular repaints of this component.

boolean

getVertical()

Returns the orientation of this component.

void

paintComponent(Graphics g)

void

setColors(Color maxColor, Color totalColor, Color usedColor)

Set the colour scheme.

void

setReverse(boolean reverse)

Sets bar movement to the opposite sense.

void

setShowText(boolean showText)

Sets whether the text should be displayed.

void

setVertical(boolean vertical)

Sets the orientation for this component.

Methods inherited from class JComponent
addAncestorListener, 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, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getUI, getUIClassID, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintImmediately, paintImmediately, paramString, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update, updateUI

Methods inherited from class Container
add, 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, validateTree

Methods inherited from class Component
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getAccessibleContext, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, 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, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details
- MemoryMonitor
  
  public MemoryMonitor()
  
  Constructor.
Method Details
- getTimer
  
  public Timer getTimer()
  
  Returns the timer which performs regular repaints of this component.
  
  Returns:
  
  timer
- setVertical
  
  public void setVertical(boolean vertical)
  
  Sets the orientation for this component.
  
  Parameters:
  
  vertical - true for vertical movement of bars
- getVertical
  
  public boolean getVertical()
  
  Returns the orientation of this component.
  
  Returns:
  
  true for vertical movement of bars
- setReverse
  
  public void setReverse(boolean reverse)
  
  Sets bar movement to the opposite sense.
  
  Parameters:
  
  reverse - true to set the zero level to the non-default end
- getReverse
  
  public boolean getReverse()
  
  Returns whether bar movement is in the opposite sense.
  
  Returns:
  
  true if the zero level is at the non-default end
- setShowText
  
  public void setShowText(boolean showText)
  
  Sets whether the text should be displayed.
  
  Parameters:
  
  showText - true to display the result of getText()
- getShowText
  
  public boolean getShowText()
  
  Returns whether text is being displayed.
  
  Returns:
  
  true if the result of getText() is being displayed
- setColors
  
  public void setColors(Color maxColor, Color totalColor, Color usedColor)
  
  Set the colour scheme.
  
  Parameters:
  
  maxColor - colour for max memory bar
  
  totalColor - colour for total memory bar
  
  usedColor - colour for used memory bar
- getColors
  
  public Color[] getColors()
  
  Returns the colour scheme.
  
  Returns:
  
  3-element array of colours: max memory, total memory and used memory
- paintComponent
  
  public void paintComponent(Graphics g)
  
  Overrides:
  
  paintComponent in class JComponent
- getText
  
  public String getText()
  
  Returns the text which is painted onto this component. It's some indication of used and available memory, but can be overridden.
  
  Returns:
  
  text

Class MemoryMonitor

Nested Class Summary

Nested classes/interfaces inherited from class JComponent

Nested classes/interfaces inherited from class Container

Nested classes/interfaces inherited from class Component

Field Summary

Fields inherited from class JComponent

Fields inherited from class Component

Fields inherited from interface ImageObserver

Constructor Summary

Method Summary

Methods inherited from class JComponent

Methods inherited from class Container

Methods inherited from class Component

Methods inherited from class Object

Constructor Details

MemoryMonitor

Method Details

getTimer

setVertical

getVertical

setReverse

getReverse

setShowText

getShowText

setColors

getColors

paintComponent

getText