public static void main ( String [ ] args ) {
  String s = "100010001" ;
  if ( checking ( s ) ) System . out . println ( "Possible" ) ;
  else System . out . println ( "Not possible" ) ;
}

public static void main ( String [ ] args ) { String s = "100010001" ; if ( checking ( s ) ) System . out . println ( " Possible " ) ; else System . out . println ( " Not ▁ possible " ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (string_literal))) (if_statement condition: (parenthesized_expression (method_invocation name: (identifier) arguments: (argument_list (identifier)))) consequence: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))) alternative: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))))))