Some messages have been simplified; recompile with -Xdiags:verbose to get full output

I am getting the error

TreeStory.java:16: error: incompatible types: String cannot be converted to boolean
String ageAsString = console.readline("How old are you? ");
^
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full o utput
1 error

my code looks like this:

String ageAsString = console.readline("How old are you? "); int age = Integer.parseInt(ageAsString); if (age < 13) { //Insert exit code console.printf("Sorry you must be atleast 13 to use this programme.\n"); System.exit(0); }

is there anything wrong!?