ImageIcon (Java SE 15 & JDK 15) (original) (raw)

All Implemented Interfaces:

[Serializable](../../../java.base/java/io/Serializable.html "interface in java.io"), [Accessible](../accessibility/Accessible.html "interface in javax.accessibility"), [Icon](Icon.html "interface in javax.swing")

public class ImageIcon extends Object implements Icon, Serializable, Accessible

An implementation of the Icon interface that paints Icons from Images. Images that are created from a URL, filename or byte array are preloaded using MediaTracker to monitor the loaded state of the image.

For further information and examples of using image icons, seeHow to Use Icons in The Java Tutorial.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans has been added to the java.beans package. Please see XMLEncoder.

Since:

1.2

• Nested Class Summary

Nested Classes

• Field Summary

Fields

• Constructor Summary

Constructors

• Method Summary

• Field Details

  • component

  Do not use this shared component, which is used to track image loading. It is left for backward compatibility only.

  • tracker

  Do not use this shared media tracker, which is used to load images. It is left for backward compatibility only.

• Constructor Details

  • ImageIcon

  public ImageIcon​(String filename,String description)
  Creates an ImageIcon from the specified file. The image will be preloaded by using MediaTracker to monitor the loading state of the image.
  Parameters:
  filename - the name of the file containing the image
  description - a brief textual description of the image
  See Also:
  ImageIcon(String)

  • ImageIcon

  Creates an ImageIcon from the specified file. The image will be preloaded by using MediaTracker to monitor the loading state of the image. The specified String can be a file name or a file path. When specifying a path, use the Internet-standard forward-slash ("/") as a separator. (The string is converted to an URL, so the forward-slash works on all systems.) For example, specify:
  new ImageIcon("images/myImage.gif")
  The description is initialized to the filename string.
  Parameters:
  filename - a String specifying a filename or path
  See Also:
  getDescription()

  • ImageIcon

  public ImageIcon​(URL location,String description)
  Creates an ImageIcon from the specified URL. The image will be preloaded by using MediaTracker to monitor the loaded state of the image.
  Parameters:
  location - the URL for the image
  description - a brief textual description of the image
  See Also:
  ImageIcon(String)

  • ImageIcon

  public ImageIcon​(URL location)
  Creates an ImageIcon from the specified URL. The image will be preloaded by using MediaTracker to monitor the loaded state of the image. The icon's description is initialized to be a string representation of the URL.
  Parameters:
  location - the URL for the image
  See Also:
  getDescription()

  • ImageIcon

  public ImageIcon​(Image image,String description)
  Creates an ImageIcon from the image.
  Parameters:
  image - the image
  description - a brief textual description of the image

  • ImageIcon

  public ImageIcon​(Image image)
  Creates an ImageIcon from an image object. If the image has a "comment" property that is a string, then the string is used as the description of this icon.
  Parameters:
  image - the image
  See Also:
  getDescription(), Image.getProperty(java.lang.String, java.awt.image.ImageObserver)

  • ImageIcon

  public ImageIcon​(byte[] imageData,String description)
  Creates an ImageIcon from an array of bytes which were read from an image file containing a supported image format, such as GIF, JPEG, or (as of 1.3) PNG. Normally this array is created by reading an image using Class.getResourceAsStream(), but the byte array may also be statically stored in a class.
  Parameters:
  imageData - an array of pixels in an image format supported by the AWT Toolkit, such as GIF, JPEG, or (as of 1.3) PNG
  description - a brief textual description of the image
  See Also:
  Toolkit.createImage(java.lang.String)

  • ImageIcon

  public ImageIcon​(byte[] imageData)
  Creates an ImageIcon from an array of bytes which were read from an image file containing a supported image format, such as GIF, JPEG, or (as of 1.3) PNG. Normally this array is created by reading an image using Class.getResourceAsStream(), but the byte array may also be statically stored in a class. If the resulting image has a "comment" property that is a string, then the string is used as the description of this icon.
  Parameters:
  imageData - an array of pixels in an image format supported by the AWT Toolkit, such as GIF, JPEG, or (as of 1.3) PNG
  See Also:
  Toolkit.createImage(java.lang.String), getDescription(), Image.getProperty(java.lang.String, java.awt.image.ImageObserver)

  • ImageIcon

  public ImageIcon()
  Creates an uninitialized image icon.

• Method Details

  • loadImage

  protected void loadImage​(Image image)
  Loads the image, returning only when the image is loaded.
  Parameters:
  image - the image

  • getImageLoadStatus

  public int getImageLoadStatus()
  Returns the status of the image loading operation.
  Returns:
  the loading status as defined by java.awt.MediaTracker
  See Also:
  MediaTracker.ABORTED, MediaTracker.ERRORED, MediaTracker.COMPLETE

  • getImage

  public Image getImage()
  Returns this icon's Image.
  Returns:
  the Image object for this ImageIcon

  • setImage

  public void setImage​(Image image)
  Sets the image displayed by this icon.
  Parameters:
  image - the image

  • getDescription

  public String getDescription()
  Gets the description of the image. This is meant to be a brief textual description of the object. For example, it might be presented to a blind user to give an indication of the purpose of the image. The description may be null.
  Returns:
  a brief textual description of the image

  • setDescription

  public void setDescription​(String description)
  Sets the description of the image. This is meant to be a brief textual description of the object. For example, it might be presented to a blind user to give an indication of the purpose of the image.
  Parameters:
  description - a brief textual description of the image

  • paintIcon

  Paints the icon. The top-left corner of the icon is drawn at the point (x, y) in the coordinate space of the graphics context g. If this icon has no image observer, this method uses the c component as the observer.
  Specified by:
  [paintIcon](Icon.html#paintIcon%28java.awt.Component,java.awt.Graphics,int,int%29) in interface [Icon](Icon.html "interface in javax.swing")
  Parameters:
  c - the component to be used as the observer if this icon has no image observer
  g - the graphics context
  x - the X coordinate of the icon's top-left corner
  y - the Y coordinate of the icon's top-left corner

  • getIconWidth

  public int getIconWidth()
  Gets the width of the icon.
  Specified by:
  [getIconWidth](Icon.html#getIconWidth%28%29) in interface [Icon](Icon.html "interface in javax.swing")
  Returns:
  the width in pixels of this icon

  • getIconHeight

  public int getIconHeight()
  Gets the height of the icon.
  Specified by:
  [getIconHeight](Icon.html#getIconHeight%28%29) in interface [Icon](Icon.html "interface in javax.swing")
  Returns:
  the height in pixels of this icon

  • setImageObserver

  public void setImageObserver​(ImageObserver observer)
  Sets the image observer for the image. Set this property if the ImageIcon contains an animated GIF, so the observer is notified to update its display. For example:
  icon = new ImageIcon(...)
  button.setIcon(icon);
  icon.setImageObserver(button);

  Parameters:
  observer - the image observer

  • getImageObserver

  Returns the image observer for the image.
  Returns:
  the image observer, which may be null

  • toString

  Returns a string representation of this image.
  Overrides:
  [toString](../../../java.base/java/lang/Object.html#toString%28%29) in class [Object](../../../java.base/java/lang/Object.html "class in java.lang")
  Returns:
  a string representing this image

  • getAccessibleContext

  Gets the AccessibleContext associated with this ImageIcon. For image icons, the AccessibleContext takes the form of an AccessibleImageIcon. A new AccessibleImageIcon instance is created if necessary.
  Specified by:
  [getAccessibleContext](../accessibility/Accessible.html#getAccessibleContext%28%29) in interface [Accessible](../accessibility/Accessible.html "interface in javax.accessibility")
  Returns:
  an AccessibleImageIcon that serves as the AccessibleContext of this ImageIcon
  Since:
  1.3