RFR 8214971 : Replace use of string.equals("") with isEmpty()

[Lance Andersen]

HI Roger,

Changes seem good

> On Dec 6, 2018, at 3:04 PM, Roger Riggs <Roger.Riggs at oracle.com> wrote:
> 
> Please review changing string.equals("") to string.isEmpty().
> isEmpty is preferred, performs better and is easier to optimize.
> 
> The change is a literal substitution in all files and only in these modules:
> 
>   java.base
>   java.logging
>   java.management
>   java.management.rmi
>   java.naming
>   java.net.http
>   java.prefs
>   java.rmi
>   java.scripting
>   java.sql
>   java.sql.rowset
>   java.xml
>   jdk.jartool
>   jdk.javadoc
>   jdk.jcmd
>   jdk.jconsole
>   jdk.management.agent
>   jdk.naming.dns
>   jdk.rmic
> 
> 
> Webrev:
> http://cr.openjdk.java.net/~rriggs/webrev-string-isempty-8214971-1/
> 
> Issue:
>   https://bugs.openjdk.java.net/browse/JDK-8214971
> 
> Thanks, Roger

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 <http://oracle.com/us/design/oracle-email-sig-198324.gif>Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037
Oracle Java Engineering 
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Lance.Andersen at oracle.com <mailto:Lance.Andersen at oracle.com>