Description Gary Gregory 2002-06-24 21:12:29 EDT

Build: eclipse-SDK-20020624-win32.zip. Windows 2000 SP2. 512MB RAM. 20GB HD.

In a Java method, add an API call that throws an uncaught Exception. 

1) For example:

<pre>
package com.seagullsw.unittest.io.xml;

import java.io.IOException;
import java.util.Arrays;

import javax.xml.parsers.ParserConfigurationException;
import org.apache.xml.security.c14n.CanonicalizationException;
import org.apache.xml.security.c14n.Canonicalizer;
import org.apache.xml.security.c14n.InvalidCanonicalizerException;
import org.xml.sax.SAXException;

/**
 * Requiremenrts:
 *
 * <code>org.apache.xml.security.c14n</code> classes from 
<code>http://xml.apache.org/security</code>.
 *
 */
public class XMLCanonicalizer {

	static String DEFAULT_ALGO_ID = 
Canonicalizer.ALGO_ID_C14N_WITH_COMMENTS;

	public static boolean canonicalEquals( String xml1, String xml2 ) {
			Canonicalizer c14n = Canonicalizer.getInstance( 
DEFAULT_ALGO_ID );
			byte[] c14nFromString = c14n.canonicalize( xml1.getBytes
() );
			byte[] c14nFromDom = c14n.canonicalize( xml2.getBytes
() );
			return Arrays.equals( c14nFromString, c14nFromDom );
	}

}
</pre>

2) Click on the first (topmost) red X icon in the margin, you get the 
suggestion to "Add throws declaration".

3) Accept the first suggestion and the 
Exception "InvalidCanonicalizerException" is added to the throws clause. Very 
nice.

4) The bug is that if you repeat set 2+3, you get the same exception added 
again and again.

Workaround: Do a File/Save, which compiles.

In the case where a line of code throws more than one Exception, like:

<pre>
byte[] c14nFromString = c14n.canonicalize( xml1.getBytes() );
</pre>

You MUST compile in order to be able to choose the next Exception to add to the 
list of throws.