Java class version 55 for 4.14.2
ai212983 opened this issue · comments
javap -verbose JsonReader | grep major returns major version: 55.
This breaks compatibiltiy JRE 1.8, producing
java.lang.UnsupportedClassVersionError: com/cedarsoftware/util/io/JsonWriter has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0 (unable to load class [com.cedarsoftware.util.io.JsonWriter])
Quite a big change for a minor version bump.
upd: checked 4.14.1, it is major version: 52, so 4.14.1 is the latest compatible with JRE 1.8.
I am looking at what 'slipped in'. Thinking we will make a 4.14.3 that is Java 1.8 compatible. Lots of good changes and minimal use of Java 11 content, and keep the 4.x.x versions Java 1.8 compatible.
We are making the changes to get the source back to compliance for 1.8 (semi-regrettfully so). Lots of new changes going in, and the plan is to maintain 1.8 support and pickup all the new fixed and enhancements, let it stabilize for a while, and then we'll start a 5.0.0 branch that will drop the deprecated code and become JDK11+
We just released json-io 4.15.0. This is fully JDK 1.8 compatible (class files are version 52). It has been tested on JDK1.8, JDK11, JDK17, and JDK21. It was just released a few minutes ago, make take an hour or two to show up on Maven Central. It is available on Sonatype now.