hello,

here is a working version

In draw() you need to wait till user has finished the answer (saved has a value then!)
and then evaluate the answer.
I would recommend arrays for questions, the right answers and the wrong images and
the correct images. All arrays with the same index :

1. int currentQuestion=0;

After a round (answer given, feedback given) you increase the index currentQuestion, so you come to the next question.
When all are done, game is over.

• instead of displaying correct or wrong you can display your image
  
• remember with String you can't say == but use equals
• the sign ! means not
  
• remember you can use ctrl-t to auto-format your code
• Later you put the array data into a class e.g. Question and have an array e.g. questions of that class
• You could also work with states in your program: stateWaitForAnswer, stateAnswerHasBeenGiven...
  

1. //
2. String question1="Who did it?";
3. String answer1= "john";
4. String typing="";
5. String saved="";
6. //
7. //
8. void setup() {
9.   size(600, 600);
10. } // func
11. //
12. void draw() {
13.   // main
14.   background(0);
15.   fill(255);
16.   // image(normal, 185, -140);
17.   // image(normal, 210, 200, normal.width/2, normal.height/2);
18.   // textFont(f);
19.   textSize(60);
20.   // character text
21.   text(question1, 50, 50);
22. 
    
23.   // has user text been entered and sent?
    
24.   if (!saved.equals(""))
25.   {
26.     // answer has been given now
27.     evaluateAnswer();
28.   }
29.   else
30.   {
31.     // wait till answer is complete
32.     text(typing, 50, 100);
33.   }
34. } // func
35. //
36. void evaluateAnswer() {
37.   // evaluate Answer
38.   text(saved, 50, 100);
39.   println ("Eval");
40.   if (saved.equals(answer1)) {
41.     // correct
42.     fill(2, 255, 2);
43.     text("correct", 50, 150);
44.     fill(255);
45.     text("Press return \nto play again", 50, 350);
46.   }
47.   else
48.   {
49.     // wrong
50.     fill(255, 2, 2);
51.     text("wrong...", 50, 150);
52.     fill(255);
53.     text("Press return \nto play again", 50, 350);
54.   }
55. } // func
56. //
57. void keyPressed() {
58.   if (key == '\n' ) {
59.     saved = typing;
60.     typing = "";
61.   }
62.   else {
63.     typing = typing + key;
64.   }
65. } // func
66. //

Greetings, Chrisir   

If you need an answer, please send me a personal message since this forum doesn't notify.

Also, use this format to be more flexible when comparing between stored answer w/ provided answer:

if ( answer.equalsIgnoreCase(saved.trim()) ) { ... }