public interface AppletContext
This interface corresponds to an applet's environment: the document containing the applet and the other applets in the same document.
The methods in this interface can be used by an applet to obtain information about its environment.
Method Summary | |
---|---|
Applet |
getApplet
(
String
name) Finds and returns the applet in the document represented by this applet context with the given name. |
Enumeration < Applet > |
getApplets
() Finds all the applets in the document represented by this applet context. |
AudioClip |
getAudioClip
(
URL
url) Creates an audio clip. |
Image |
getImage
(
URL
url) Returns an Image object that can then be painted on the screen. |
InputStream |
getStream
(
String
key) Returns the stream to which specified key is associated within this applet context. |
Iterator < String > |
getStreamKeys
() Finds all the keys of the streams in this applet context. |
void |
setStream
(
String
key,
InputStream
stream) Associates the specified stream with the specified key in this applet context. |
void |
showDocument
(
URL
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void |
showDocument
(
URL
url,
String
target) Requests that the browser or applet viewer show the Web page indicated by the url argument. |
void |
showStatus
(
String
status) Requests that the argument string be displayed in the "status window". |
Method Detail |
---|
AudioClip getAudioClip(URL url)
Image getImage(URL url)
This method always returns immediately, whether or not the image exists. When the applet attempts to draw the image on the screen, the data will be loaded. The graphics primitives that draw the image will incrementally paint on the screen.
Applet getApplet(String name)
Enumeration<Applet> getApplets()
void showDocument(URL url)
void showDocument(URL url, String target)
Target Argument | Description |
---|---|
"_self" | Show in the window and frame that contain the applet. |
"_parent" | Show in the applet's parent frame. If the applet's frame has no parent frame, acts the same as "_self". |
"_top" | Show in the top-level frame of the applet's window. If the applet's frame is the top-level frame, acts the same as "_self". |
"_blank" | Show in a new, unnamed top-level window. |
name | Show in the frame or window named name . If a target named name does not already exist, a new top-level window with the specified name is created, and the document is shown there. |
An applet viewer or browser is free to ignore showDocument.
void showStatus(String status)
void setStream(String key, InputStream stream) throws IOException
For security reasons, mapping of streams and keys exists for each codebase. In other words, applet from one codebase cannot access the streams created by an applet from a different codebase
InputStream getStream(String key)
For security reasons, mapping of streams and keys exists for each codebase. In other words, applet from one codebase cannot access the streams created by an applet from a different codebase
Iterator<String> getStreamKeys()
For security reasons, mapping of streams and keys exists for each codebase. In other words, applet from one codebase cannot access the streams created by an applet from a different codebase