Using a JEditorPane to display a web page. import *; import *; import *; import *; public class. The JEditorPane class is the foundation for Swing’s styled text components and provides a mechanism Using an Editor Pane to Display Text From a URL. This class implements accessibility support for the JEditorPane class. Gets the current URL being displayed. getRef method for the URL being displayed).
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Examples and practices described in this page don’t take advantage of improvements jeditoepane in later releases. Two Swing classes support styled text: The JEditorPane class is the foundation for Swing’s styled text components and provides a mechanism through which you can add support for custom text formats.
If you want unstyled text, use a text area instead. You can see an editor pane and a text pane in use by running TextSamplerDemo.
JEditorPane (Java Platform SE 8 )
Here is a picture of the TextSamplerDemo example. Alternatively, to compile and run the example yourself, consult the example index.
The TextSamplerDemo example barely begins to demonstrate the capabilities of editor panes and text panes. However, the top right editor pane illustrates a handy, easy-to-use feature: The text pane at the lower right demonstrates that you can easily embed images and even components directly into text panes.
If you need a fully-fledged help system, take a look at the javahelp project. The Swing text API is powerful and immense, and we could devote an entire book just to using editor panes and text panes.
This section introduces their capabilities, offers hints on which one you might want to use, and points to other sources of information.
How to Use Editor Panes and Text Panes
One task that you can accomplish without knowing anything about the Swing text system is displaying text from a URL. Here is the code from TextSamplerDemo.
The code uses the default constructor to create the editor pane, then calls setEditable false so the user cannot edit the text. Next, the code creates the URL object, and calls the setPage method with it. If the text format is known, the editor pane initializes itself with the text found at the URL. Note that the page might be loaded asynchronously, which keeps the GUI responsive but means that you should not count on the data being completely loaded after the call to setPage returns.
In order to use editor panes and text panes, you need to understand the text system, which is described in Text Component Features.
Several facts about editor panes and text panes are scattered throughout that section. Here we list the facts again and provide a bit more detail. The information here should help you understand the differences between editor panes and text panes, and when to use which. Be aware that the document and editor kit might change when using the setPage method. If your program uses jeditorpanw setPage method, make sure you jeditorpaane your code for possible changes to the pane’s document and editor kit instances re-register document listeners on the new document, and so on.
Here is the code from the TextSamplerDemo example that creates and initializes a text pane.
Next, the code loops over the arrays, inserts the text into the text pane, and specifies the style to use for the inserted text. Although this is an interesting example that concisely demonstrates several features of JTextPane”real-world” programs aren’t likely to initialize a text pane this way.
Instead, a program would use an editor pane to save a document which would then be used to initialize the text pane. This section lists some of the API related to text and editor panes.
To begin using text, you might want to run these programs and examine their code to find something similar to what you want to do. Using Swing Components Section: How to Use Various Components.
How to Make Dialogs Next page: How to Use File Choosers. Provides a customized text pane. Illustrates many text component features, such as undo and redo, document filters, document listeners, caret change listeners, and how to associate editing actions with menus and key strokes.