1) Create a method called: public void loadMemory(String fileName) Create the ne

Question

1) Create a method called:

public void loadMemory(String fileName)

Create the necessary instructions for this method to open a file whose name is given as a parameter and copy its contents into the memory array instance variable. Think about how you will handle the exceptions that will be thrown when you use the Java I/O API. You should handle all exceptions within your new loadMemory(String) method. How will you know when there is no more data to read?

Remember: the program.ex file is a binary file, not a text file. Note: Be sure to use getMessage() and printStackTrace() in your exception handling.

2)In "Computer"class, implement a new run method via overloading which takes the name of the executable file as a parameter. This method will provide the same functionality as your original run method except that it will load a program from a file instead of just loading a default program.

Explanation / Answer

This creates a potential mutable hole in an otherwise immutable data type. For example, the following implementation of aVectoris mutable.

      public class Complex {      private final double re;      private final double im;        public Complex(double real, double imag) {          re = real;          im = imag;      }        // compile-time error      public void plus(Complex b) {          re = this.re + b.re;     // oops, overwrites invoking object's value          im = this.im + b.re;     // compile-time error since re and im are final          return new Complex(re, im);      }  }  

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