I can't do it wanted to change json entry to a line on the java side

I can't do it wanted to change json entry to a line on the java8 side.

        Input :
                           {"code"  : "SERVICE1", "action" : "ADD",
               "SERVICE2":    [ 
                          {"code"  : "563563",  "action"  : "FIND"},
                          {"code"  : "5656",    "action"  : "NOFIND"},
                          {"code"  : "46536",   "action"  : "FIND"}}]},

After java8 output processing:

    SERVICE = 563563,FIND;5656,NOFIND,46536,FIND