Processing and Arduino connection - whats wrong?

Hello! i use my Arduino to send over serial - messages like "Fail=1." "Fail=2." or "Otvet=1" etc.

i use code

` void serialEvent(Serial port) {

String input = port.readStringUntil('.');

if (input != null) { // Print message received println(input);

 if (input.equals("Otvet=1")==true) 
    {

      println("OTVET 1");
      //    fill(0, 255, 0);
      //    ellipse(56, 46, 55, 55);
     } 

 if (input.equals("Fail=1")==true) 
    {
             println("FAILSTART=1");
       //   fill(255, 0, 0);
       //   ellipse(500, 500, 55, 55);
     } 

          }

} `

and - IF working ONLY one time - if first message from Arduino is "Otvet=1." and next is "Fail=1." - i see first "OTVET 1" in console but after this i dont see FAILSTART=1...

What i do wrong?

Thanks. Sorry my bad English