JavajavaTutorialJava 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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