Exercise : Syntax errors

• The following program contains 11 errors! Work with a partner to find them all. You may want to run the program and jGRASP and see what kinds of error messages are shown for each kind of mistake.

  1 2 3 4 5 6 7 8 9

  public class Tricky public static main(String args) { System.out.println(Hello world); system.out.Pritnln("Do you like this program"?); System.out.println() System.println("I wrote it myself."; { }

• Once you think you've found the errors, create/compile/run a corrected version of this program.

answer on next slide...

Exercise - answer

1. line 1: missing { after Tricky
2. line 2: missing void before main
3. line 2: missing [] after String
4. line 3: missing " marks around Hello world
5. line 4: system should be System (uppercase S)
6. line 4: Pritnln should be println (lowercase P and fixed spelling)
7. line 4: ? should be before "
8. line 5: missing semicolon after ()
9. line 7: missing ) after "
10. line 8: System.println should be System.out.println
11. line 8: { should be }

Exercise - corrected version

• Here is a corrected version of the program:

  public class Tricky {
      public static void main(String[] args) {
          System.out.println("Hello world");
          System.out.println("Do you like this program?");
          System.out.println();
  
          System.out.println("I wrote it myself.");
      }
  }