Using Compact Strings

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The Azul Zing Virtual Machine is now Azul Zulu Prime Builds of OpenJDK and part of Azul Platform Prime.

Azul Platform Prime supports JEP 254, the compact strings optimization.

The compact strings feature of the Azul Platform Prime lowers memory footprint, improves performance of string-intensive applications, and reduces time spent on garbage collection.

To enable or disable the feature, use the following option:

 =-XX:[+/-]CompactStrings

Note	Compact strings change internal representation of all strings from `char[]` to `byte[]`, and changes the String class layout. If your application accesses `java.lang.String` fields via reflection or is unsafe, you may observe incorrect application behavior.