[ Tip ]
Exception in thread "main" java.lang.UnsupportedClassVersionError:
com/example/demo/SpringSchedulerApplication has been compiled by
a more recent version of the Java Runtime(class file version 61.0)
, this version of the Java Runtime only recognizes class file versions up to 52.0
위와 같은 에러가 발생하는 경우
아래를 표를 보고 JDK버전을 class file이 요구하는 버전으로 맞춰주면 된다
| Class File Versions | |
| JDK Version | ByteCode Version |
| Java 1.0 | 45.0 |
| Java 1.1 | 45.3 |
| Java 1.2 | 46.0 |
| Java 1.3 | 47.0 |
| Java 1.4 | 48.0 |
| Java 5 | 49.0 |
| Java 6 | 50.0 |
| Java 7 | 51.0 |
| Java 8 | 52.0 |
| Java 9 | 53.0 |
| Java 10 | 54.0 |
| Java 11 | 55.0 |
| Java 12 | 56.0 |
| Java 13 | 57.0 |
| Java 14 | 58.0 |
| Java 15 | 59.0 |
| Java 16 | 60.0 |
| Java 17 | 61.0 |
| Java 18 | 62.0 |
| Java 19 | 63.0 |
| Java 20 | 64.0 |
| Java 21 | 65.0 |
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