class  HighlightTest {

 HighlightTest() {
   JTextPane textPane =  new  JTextPane();

   attrs[ 0 ] =  new  SimpleAttributeSet();
   StyleConstants.setBold(attrs[ 0 ], false);

   attrs[ 1 ] =  new  SimpleAttributeSet();
   StyleConstants.setBold(attrs[ 1 ], true);

   doc =  new  SQLHighlighting();
   textPane.setDocument(doc);
 }


     class  SQLHighlighting  extends  DefaultStyledDocument {
       protected   void  insertUpdate(DefaultDocumentEvent chng, AttributeSet attr) {
          int  offset = chng.getOffset();
         String word="";
         String next_word="";

         
        try  {
         StringTokenizer st =  new  StringTokenizer(doc.getText(posS, posE));
          while  (st.hasMoreTokens() == true) {
           next_word=st.nextToken();
            while  (st.hasMoreTokens()) {
            word = next_word;
            next_word = st.nextToken();
            posS=textPane.getText().indexOf(word);
            posE=textPane.getText().indexOf(next_word);
             if  (word.equalsIgnoreCase("select")) {
              doc.setCharacterAttributes(posS, posE, attrs[ 1 ], true);
            }  else  {doc.setCharacterAttributes(posS, posE, attrs[ 0 ], true);}
           }
         }
       }  catch  (BadLocationException ex) { System.out.println(ex.getMessage()); }
      }
    }
}