DocumentFilter that maps lowercase letters to uppercase : Document Event « Swing JFC « Java

Home
Java
1.2D Graphics GUI
2.3D
3.Advanced Graphics
4.Ant
5.Apache Common
6.Chart
7.Class
8.Collections Data Structure
9.Data Type
10.Database SQL JDBC
11.Design Pattern
12.Development Class
13.EJB3
14.Email
15.Event
16.File Input Output
17.Game
18.Generics
19.GWT
20.Hibernate
21.I18N
22.J2EE
23.J2ME
24.JDK 6
25.JNDI LDAP
26.JPA
27.JSP
28.JSTL
29.Language Basics
30.Network Protocol
31.PDF RTF
32.Reflection
33.Regular Expressions
34.Scripting
35.Security
36.Servlets
37.Spring
38.Swing Components
39.Swing JFC
40.SWT JFace Eclipse
41.Threads
42.Tiny Application
43.Velocity
44.Web Services SOA
45.XML
Java » Swing JFC » Document EventScreenshots 
DocumentFilter that maps lowercase letters to uppercase
DocumentFilter that maps lowercase letters to uppercase
   
import javax.swing.JFrame;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.text.AbstractDocument;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.DocumentFilter;

public class UpcaseFilter extends DocumentFilter {

  public void insertString(DocumentFilter.FilterBypass fb, int offset,
      String text, AttributeSet attrthrows BadLocationException {
    fb.insertString(offset, text.toUpperCase(), attr);
  }

  //no need to override remove(): inherited version allows all removals

  public void replace(DocumentFilter.FilterBypass fb, int offset, int length,
      String text, AttributeSet attrthrows BadLocationException {
    fb.replace(offset, length, text.toUpperCase(), attr);
  }

  public static void main(String[] args) {
    DocumentFilter dfilter = new UpcaseFilter();

    JTextArea jta = new JTextArea();
    JTextField jtf = new JTextField();
    ((AbstractDocumentjta.getDocument()).setDocumentFilter(dfilter);
    ((AbstractDocumentjtf.getDocument()).setDocumentFilter(dfilter);

    JFrame frame = new JFrame("UpcaseFilter");
    frame.getContentPane().add(jta, java.awt.BorderLayout.CENTER);
    frame.getContentPane().add(jtf, java.awt.BorderLayout.SOUTH);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(200120);
    frame.setVisible(true);
  }
}

           
         
    
    
  
Related examples in the same category
1.An extension of PlainDocument that restricts the length of its contentAn extension of PlainDocument that restricts the length of its content
2.Document Event DemoDocument Event Demo
3.React to the document update insert changed eventReact to the document update insert changed event
4.HTMLDocument: Document Iterator Example
5.DocumentListener DemoDocumentListener Demo
6.extends PlainDocument to create a float value type text field
7.extends PlainDocument to create alpha and numeric value based field field
8.Implement a document cleaner that maps lowercase letters to uppercaseImplement a document cleaner that maps lowercase letters to uppercase
9.Document ElementIterator DemoDocument ElementIterator Demo
10.Format JTextField's text to uppercase
11.Overriding a Few Default Typed Key Bindings in a JTextComponent
12.Overriding - key
13.Override $ key
14.Overriding space key
15.Disable a character so that no action is invoked.
16.Bind a keystroke to shift-space
17.Prevent the space from being inserted when shift-space is pressed.
18.Subclass InputVerifier
19.extends PlainDocument
20.This Document restricts the size of the contained plain text to the given number of characters.
21.A frame with three text fields to set the background color.
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.