network programming - How do I make my automated Client-Server Java networking code output in the correct sequence? -

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let me start saying know lot of code, , please bear me. working on project, i'm porting oracle's knock-knock client/server example state-capital example. instead of knockknock jokes, runs series of state-capital queries. runs :

server: may have permission send state-capital query?

client: ok

server: send me state , can send capital?

client: alabama

server: capital of alabama hunstville . want 1 (y/n) ?

client: n

the motivation doing project later demonstrate type of fail-safe ability (after work want use powershell , use run client-server single unit).

back code. when run it's giving me following output, not i'm looking for. supposed synchronized client , server working on 1 state @ time. instead, client-side jumping ahead of server side, , isn't reaching last state of wyoming. tried add in synchronization as per question.

mycodeoutput

i've linked full code on pastebin

fixedmessagesequenceclient

fixedmessagesequenceserver

fixedmessagesequenceprotocol

in code, using simple text log file of integer numbers :

1 2 3 4

note: utilizing apache reversedlinesfilereader library .

i have suspicion error because of java io writing takes long. think may because of block of code: 

for (int = modlastnum; < kkjokes.length ; i++){          string fromserver = br.readline();             out.println(kkjokes[  % kkjokes.length ]);      if ( (i % 3 )==2){        try {         thread.sleep(11);          } catch (interruptedexception ie) {}     }        // fromserver = br.readline();   system.out.println ( fromserver ); fromserver = br.readline();   system.out.println ( fromserver ); //    string fromserver3 = br.readline();      system.out.println ( fromserver3 )  ; system.out.println ( fromserver )  ;   if(fromserver.equals("inputofyes")){                       while (!(fromserver.equals("nowlogged"))) {       fromserver = br.readline();     }              }      system.out.println ( fromserver )  ;    } // end-forloop starting @ ln. 93

and hunch automated sending of queries fixedmessagesequenceserver class (by way of fixedmessagesequenceprotocol class ) perhaps going fast, , maybe io inside of fixedmessagesequenceclient bottleneck.

any tips regarding how debug or figure out appreciated, thanks

no need new answers. paul above, encouraging me figure out on own :

the issue that, overlooked importance of fixedsequencemessageprotocol class

since client hard-coded send in large stateresponses array, needed have fourth field "ack" (should ideally multidimensional array), pairs server's sending of "nowlogged" :

stateresponses[] =  { "permission granted." , "what alabama population", "y", "ack",   //00                                "permission granted." , "what alaska population", "y", "ack",

after this, in fixedsequencemessageprotocol class added new constant final variable, indicate pending-status after log state position, sentpermission2 :

private static final int waiting = 0; private static final int sentpermission = 1; private static final int sentpermission2 = 2; // ** new line private static final int sentclue =  3;    private static final int = 4;

following, need add case within nested-if blocks in fixedsequencemessageprotocol class:

  /* etc more code */ {         if (theinput.equalsignorecase(clues[currentpopulationrequest])) {               theoutput = answers[currentpopulationrequest] + " want another? (y/n)";             currentpopulationrequest++;              state = sentpermission2 ;   //sentpermssion2,  & in sentpermission2 put         } else {             theoutput = "you're supposed \"" +              clues[currentpopulationrequest]  +              "! try again. request send state population";             state = sentpermission;         }     }       else if (state == sentpermission2) {         if (theinput.equalsignorecase("y")) {             theoutput = "status logged";             state = another;         } else {             theoutput = "bye.";                    state = waiting;         }     }      else if (state == another) {         if (theinput.equalsignorecase("ack")) { /* etc more code */

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