test/jdk/javax/swing/text/GapContent/4496801/bug4496801.java

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 * accompanied this code).
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/* @test
   @bug 4496801 8151015
   @summary Tests HTMLDocument.insertBeforeEnd() method
   @author Peter Zhelezniakov
   @run main bug4496801
*/

import javax.swing.text.html.parser.ParserDelegator;
import javax.swing.text.html.*;
import javax.swing.text.*;
import java.io.IOException;

public class bug4496801 {
    public static void main(String[] args) {
        HTMLDocument doc = new HTMLDocument();
        doc.setParser(new ParserDelegator());

        Element html = doc.getRootElements()[0];
        Element body = html.getElement(0);

        try {
            doc.insertBeforeEnd(body, "<h2>foo</h2>");
        } catch (IOException e) {
        } catch (BadLocationException e) {
            throw new RuntimeException("Insertion failed");
        }
    }
}