[OpenJDK 2D-Dev] [9] RFR JDK-8163258 : Getting NullPointerException from ImageIO.getReaderWriterInfo due to failure to check for null

[Jayathirth D V]

Hi,

 

Please review the following fix in JDK9 at your convenience:

 

Bug : https://bugs.openjdk.java.net/browse/JDK-8163258 

 

Webrev : http://cr.openjdk.java.net/~jdv/8163258/webrev.00/ 

 

Issue : When we call ImageIO.getReaderMIMETypes() or ImageIO. getFileSuffixes() 
with MIMEType or FileSuffix as null in subclass ImageReaderSpi it throws 
NullPointerException. 

 

Root cause : We allow MIMEType and FileSuffix to be null in 
ImageReaderWriterSpi. But when we call getReaderMIMETypes() or 
getFileSuffixes() we try populate HashSet using Collections.addALL() which 
throws NPE.

 

Solution : Before we populate HashSet using  Collections.addALL() verify 
whether the input is null.

 

Thanks,

Jay