I saw this list of major version numbers for Java in another post:
| Java | Major version |
|---|---|
| 22 | 66 |
| 21 | 65 |
| 20 | 64 |
| 19 | 63 |
| 18 | 62 |
| 17 | 61 |
| 16 | 60 |
| 15 | 59 |
| 14 | 58 |
| 13 | 57 |
| 12 | 56 |
| 11 | 55 |
| 10 | 54 |
| 9 | 53 |
| 8 | 52 |
| 7 | 51 |
| 6 | 50 |
| 5 | 49 |
| 1.4 | 48 |
| 1.3 | 47 |
| 1.2 | 46 |
| 1.1 | 45 |
| 1.0.2 | 45 |
Where does this list come from? Is there a specific reference for this? Preferably something that shows minor versions too?
These come from the class version. If you try to load something compiled for java 6 in a java 5 runtime you'll get the error, incompatible class version, got 50, expected 49. Or something like that.
See here in byte offset 7 for more info.
Additional info can also be found here.