Using Compact Strings

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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.