do while loop question no 2

Question - Now continually prompt the user in a do while loop. The loop should continue running as long as the response is No. Don't forget to declare response outside of the do while loop

code 1) String response = console.readLine("Do you understand do while loops?"); do{ if (response.equals("yes")){ console.printf("do you understand do while loops?"); } }while (response.equals("No")); Error:Code took longer to run

code 2)String response = console.readLine("Do youuderstand : ");; boolean isInvalidWord; do {

    isInvalidWord = (response.equalsIgnoreCase("yes"));
    if (isInvalidWord){
      console.printf("do you understand  : ");
    }
  }while (isInvalidWord);

Error:Continuous looping does not end until i press cntrl+c

If somebody could help me understand what mistake am doing.

// I have initialized a java.io.Console for you. It is in a variable named console.


   String response = console.readLine("Do you understand do while loops?");
do{
  if (response.equals("yes")){
    console.printf("do you understand do while loops?");
  }
}while (response.equals("No"));