[Patch][JDK10] Use Class.getPackageName() where possible

[Roger Riggs]

Hi Mandy,

yes, the revision in the webrev is correct; the trailing '.' in the pkg 
was just to ensure it was a package prefix.

+1, Roger




On 11/7/2017 6:00 PM, mandy chung wrote:
>
>
> On 11/7/17 6:48 AM, Christoph Dreis wrote:
>> ======= PATCH =======
>> diff -r 67aa34b019e1 src/java.base/share/classes/java/io/ObjectInputFilter.java
>> --- a/src/java.base/share/classes/java/io/ObjectInputFilter.java	Mon Nov 06 17:48:00 2017 -0800
>> +++ b/src/java.base/share/classes/java/io/ObjectInputFilter.java	Tue Nov 07 15:44:36 2017 +0100
>> @@ -656,8 +656,8 @@
>>                * otherwise {@code false}
>>                */
>>               private static boolean matchesPackage(Class<?> c, String pkg) {
>> -                String n = c.getName();
>> -                return n.startsWith(pkg) && n.lastIndexOf('.') == pkg.length() - 1;
>> +                String n = c.getPackageName();
>> +                return n.length() == pkg.length() - 1 && n.startsWith(pkg);
>>               }
>>   
>
> This is correct but we could simplify this.  We can modify the callers 
> to drop a trailing "." from the pkg parameter.  I took the liberty to 
> revise it a little.
>
> http://cr.openjdk.java.net/~mchung/jdk10/webrevs/8190733/webrev.00/
>
> Roger - can you take a look at the change in ObjectInputFilter?
>
> Mandy