Class File Versions
Each JDK Release comes with its class file version. Class files are backward
compatible. But class files compiled for newer JDK releases cannot be executed
and will result in an UnsupportedClassVersionError.
The following table lists class file versions for each JDK release. Follow the linked JDK information to find download options for a suitable JDK.
| JDK Version | Class File 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 |
| Java 22 | 66.0 |
| Java 23 | 67.0 |