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# Class File Version
Extracts the class file version of each class file belonging to the project.

## Note
Class files using Java 1.0 and 1.1. are grouped together because they use the same class file version number.

## Major Features of Selected Class File Versions

### Java 6 and newer
Generally, don't have *jsr*/*ret* instructions anymore, because Java stopped generating them. However, technically they are still allowed and were only forbidden with version 51 (*cf. Java Virtual Machine Specification - Constraints on Java Virtual Machine code - Static Constraints*)

### Java 7 and newer
May have *invokedynamic* instructions; however Java only started using *invokedynamic* with Java 8 and all other languages (e.g., Clojure, Groovy, Scala) also did not starte using them right away.

### Java 8 and newer
 - usually have *invokedynamic* instructions because Java started using it
 - added default methods (this changed the way how method resolution works)


## Attributes per Class File Version


Attribute ClassFileVersion Java SE
ConstantValue 45.3 1.0.2
Code 45.3 1.0.2
Exceptions 45.3 1.0.2
SourceFile 45.3 1.0.2
LineNumberTable 45.3 1.0.2
LocalVariableTable 45.3 1.0.2
InnerClasses 45.3 1.1
Synthetic 45.3 1.1
Deprecated 45.3 1.1
EnclosingMethod 49.0 5.0
Signature 49.0 5.0
SourceDebugExtension 49.0 5.0
LocalVariableTypeTable  49.0 5.0
RuntimeVisibleAnnotations  49.0  5.0
RuntimeInvisibleAnnotations  49.0  5.0
RuntimeVisibleParameterAnnotations  49.0  5.0
RuntimeInvisibleParameterAnnotations  49.0  5.0
AnnotationDefault  49.0  5.0
StackMapTable  50.0  6
BootstrapMethods  51.0  7
RuntimeVisibleTypeAnnotations  52.0  8
RuntimeInvisibleTypeAnnotations 52.0  8 
MethodParameters  52.0  8

Attribute	ClassFileVersion	Java SE
ConstantValue	45.3	1.0.2
Code	45.3	1.0.2
Exceptions	45.3	1.0.2
SourceFile	45.3	1.0.2
LineNumberTable	45.3	1.0.2
LocalVariableTable	45.3	1.0.2
InnerClasses	45.3	1.1
Synthetic	45.3	1.1
Deprecated	45.3	1.1
EnclosingMethod	49.0	5.0
Signature	49.0	5.0
SourceDebugExtension	49.0	5.0
LocalVariableTypeTable	49.0	5.0
RuntimeVisibleAnnotations	49.0	5.0
RuntimeInvisibleAnnotations	49.0	5.0
RuntimeVisibleParameterAnnotations	49.0	5.0
RuntimeInvisibleParameterAnnotations	49.0	5.0
AnnotationDefault	49.0	5.0
StackMapTable	50.0	6
BootstrapMethods	51.0	7
RuntimeVisibleTypeAnnotations	52.0	8
RuntimeInvisibleTypeAnnotations	52.0	8
MethodParameters	52.0	8