I was recently reading about all the JVM arguments available in JRE 6 [Java VM Options] and saw this :
-XX:+StringCache : Enables caching of commonly
As of JDK 8.0, this option has been removed. It is unclear to me what, if anything, can be used as a replacement.
http://docs.oracle.com/javase/8/docs/technotes/tools/unix/java.html
-XX:+UseStringCache Enables caching of commonly allocated strings. This option was removed from JDK 8 with no replacement.