Chapter 12, Problem 3E

Explanation of Solution

Method definition:

//method definition

  public void writeSequence(int n)

   {

    //condition to compare the value

    if (n < 1)

    {

        //return illegal argument exception

        throw new IllegalArgumentException();

    }

    //compare the value for n

    else if (n == 1)

     {

        //display the value

        System.out.print(1);

    }

    //compare the condition for value is 2

    else if (n == 2)

     {

        //display the value

        System.out...