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• History

• File layout and structure

• Sections

• Magic Number

• General layout

• Representation of a class file

• The constant pool

• See also

• References

• Further reading

On 11 December 2006, the class file format was modified under Java Specification Request (JSR) 202.cite-ref-1[1]

There are 10 basic sections to the Java class file structure:

• Magic Number: 0xCAFEBABE

• Version of Class File Format: the minor and major versions of the class file

• Constant Pool: Pool of constants for the class

• Access Flags: for example whether the class is abstract, static, etc.

• This Class: The name of the current class

• Super Class: The name of the super class

• Interfaces: Any interfaces in the class

• Fields: Any fields in the class

• Methods: Any methods in the class

• Attributes: Any attributes of the class (for example the name of the sourcefile, etc.)

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