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From "Rick McGuire (JIRA)" <>
Subject [jira] Created: (GERONIMO-4126) NPE if null argument specified for InternetHeaders.getMatchingHeaders()
Date Wed, 18 Jun 2008 12:10:45 GMT
NPE if null argument specified for InternetHeaders.getMatchingHeaders()

                 Key: GERONIMO-4126
             Project: Geronimo
          Issue Type: Bug
      Security Level: public (Regular issues)
            Reporter: Rick McGuire
            Assignee: Rick McGuire
            Priority: Minor
             Fix For: 2.2

The InternetHeaders getMatchingHeaders(), getNonMatchingHeaders(), etc. methods give an NPE
if a null match list is provided.  The Sun implementation treats this the same as an empty
array.  The following simple program can demonstrate the problem:  

import javax.mail.internet.InternetHeaders; 
import javax.mail.Header; 

import java.util.Enumeration; 

public class TestMatchHeaders  
    static public void main(String [] args) {
        InternetHeaders headers = new InternetHeaders(); 
        headers.setHeader("Subject", "Hello"); 
        headers.setHeader("From", "Me"); 
        Enumeration e = headers.getMatchingHeaderLines(null); 
        System.out.println(">>>>> Matching lines"); 
        while (e.hasMoreElements()) {
        e = headers.getNonMatchingHeaderLines(null); 
        System.out.println(">>>>> Non-Matching lines"); 
        while (e.hasMoreElements()) {

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