Java Class Version Mismatch: How to Fix 'Class has been compiled by a more recent version of the Java Environment'?

Java Class Version Mismatch

While encountering the error message "Class has been compiled by a more recent version of the Java Environment," it indicates a version discrepancy between the compiled code and the Java Runtime Environment (JRE).

The provided information reveals that the code was compiled using Java version 9, whereas the current JRE is version 8. This mismatch results in the error, as JRE version 8 only recognizes class file versions up to 52.0. The compiled code's class file version, 53.0, surpasses this limit.

To resolve this issue, it is recommended to upgrade the JRE to version 9 or higher to match the compiled code's requirements.

For reference, the following table lists the class file versions corresponding to different Java versions:

Java Version	Class File Version
Java 5	49
Java 6	50
Java 7	51
Java 8	52
Java 9	53
Java 10	54
Java 11	55
Java 12	56
Java 13	57
Java 14	58
Java 15	59
Java 16	60
Java 17	61
Java 18	62
Java 19	63
Java 20	64
Java 21	65

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