public static void main ( String args [ ] ) {
  Sum s = new Sum ( ) ;
  int N = 8 , K = 3 ;
  s . sumOfPrevK ( N , K ) ;
}

public static void main ( String args [ ] ) { Sum s = new Sum ( ) ; int N = 8 , K = 3 ; s . sumOfPrevK ( N , K ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier) dimensions: (dimensions))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (identifier))))))