= [Java] Class File Version [[[#!Table tsv 1 version hex Java SE 21 65 0x41 Java SE 20 64 0x40 Java SE 19 63 0x3F Java SE 18 62 0x3E Java SE 17 61 0x3D Java SE 16 60 0x3C Java SE 15 59 0x3B Java SE 14 58 0x3A Java SE 13 57 0x39 Java SE 12 56 0x38 Java SE 11 55 0x37 Java SE 10 54 0x36 Java SE 9 53 0x35 Java SE 8 52 0x34 Java SE 7 51 0x33 Java SE 6.0 50 0x32 Java SE 5.0 49 0x31 JDK 1.4 48 0x30 JDK 1.3 47 0x2F JDK 1.2 46 0x2E JDK 1.1 45 0x2D ]]] [[[ javap -verbose yourClass | grep version ]]] == References == * http://en.wikipedia.org/wiki/Java_class_file * http://reverseengineering.stackexchange.com/a/1329