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Object tmp = pair.first; pair.first = pair.second; // error: incompatible types pair.second = tmp; // error: incompatible types } } class Test { public static void test() { Pair xmas = new Pair< String , Date >(“Xmas”,new Date(104,11,24)); Pair.flip(xmas); Pair name = new Pair< String , String >(“Yves”,”Meyer”); Pair.flip(name); } }
