interface abstract method problem

[Former Member]

hi ppl,

below is the code i did so far.The problem here is its displaying an error message that 'method m1 is not declared or inherited in class d2' in subclass.but i dont think so,because i have inherited from super class.Please give me some idea.

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• INTERFACE DEV

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*

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INTERFACE dev.

METHODS m1.

ENDINTERFACE. "DEV

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• CLASS D1 DEFINITION

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CLASS d1 DEFINITION ABSTRACT .

PUBLIC SECTION.

INTERFACES dev

ABSTRACT METHODS: m1.

METHODS:m2.

DATA: s(20) TYPE c.

ENDCLASS. "D1 DEFINITION

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• CLASS D1 IMPLEMENTATION

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CLASS d1 IMPLEMENTATION.

METHOD: m2.

s = 'SUPER'.

WRITE:/ s.

ENDMETHOD. "M2

ENDCLASS. "D1 IMPLEMENTATION

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CLASS d2 DEFINITION INHERITING FROM d1.

PUBLIC SECTION.

METHODS:m1 REDEFINITION.

DATA: t(20) TYPE c.

ENDCLASS. "D2 DEFINITION

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• CLASS D2 IMPLEMENTATION

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CLASS d2 IMPLEMENTATION.

METHOD: dev~m1.

t = 'SUB'.

WRITE:/ t.

ENDMETHOD. "DEV~M1

ENDCLASS. "D2 IMPLEMENTATION

START-OF-SELECTION.

DATA: obj TYPE REF TO d2,

dev TYPE REF TO dev.

CREATE OBJECT obj.

dev = obj.

CALL METHOD dev->m1.

[Former Member]

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