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Java interfaces don't have properties either (nor do Java classes), and you can explicitly state interface conformance in Go as well as others have explained el

• terminalcommand 9y ago
  Sorry, my fault. It seems in java you can declare constants in interfaces, but this is frowned upon. Interfaces cannot require instance variables to be defined -- only methods. (Variables can be defined in interfaces, but they do not behave as might be expected: they are treated as final static.) (source: https://stackoverflow.com/questions/7311274/attributes-member-variables-in-interfaces https://stackoverflow.com/questions/7311274/attributes-membe...) (Another useful link explaining that statements resembling instance variables in interfaces are in fact constants: https://coderanch.com/t/178630/certification/Instance-variables-interface https://coderanch.com/t/178630/certification/Instance-variab...)