Assignment 7 Exercise 6 & 10

/************************************
*T'Nora Green
*Assignment 7, Exercise 6

*************************************/

public class Test

{

  private int x;

  private static int y;

  public void doIt()

  {

    x = 1;

    y = 2;

  }

  public static void tryIt()

  {

    x = 3;                               

    y = 4;

  }

  public static void main(String[] args)

  {

    doIt();                             

    tryIt();

    Test t = new Test();

    t.doIt();

    Test.doIt();                         

    Test.tryIt();

  }

} // end Test class

Reasons for errors from the debugger:

non-static variable x cannot be referenced from the static tryIt method

non-static method doIt() cannot be referenced from the static main method

 non-static method doIt cannot be referenced  instance method using a dot prefix.

/************************************
*T'Nora Green
*Assignment 7, Exercise 10

*************************************/

Yes, its legal to omit the PennyJar dot prefixes in the PennyJar class. In the PennyJarDriver class PennyJar.getAllPennies() is needed and cannot be omitted.