package chapter.pkg6;

public class Chapter6 
{
	// EXAMPLE OF A WHILE LOOP
    public static void calculate()
    {   double balance = 1000;
        double goal = 2000;
        int years = 0;
        double interestRate = 0.03;
        while (balance < goal)
        {   balance = balance + balance * interestRate;
            // shorthand: balance += balance * interestRate;
            years++;
            System.out.println("year " + years + " balance: $" + balance);
        }
        System.out.println("year " + years + " balance: $" + balance);  
    }
	
	// FOR LOOP EXAMPLE
    public static void firstForLoop()
    {   int k;
        for (k = 0; k < 10; k++)
        {   System.out.println("Happy Thursday!");            
        }
    }
	
	// EXAMPLE OF NESTED LOOPS
    public static void nestedLoop1()
    {   int i, j;
        for (i = 1; i <= 3; i++)
        {   for (j = 1; j <= 4; j++)
                System.out.print("*");
            System.out.println();
        } 
    }
	
	// ANOTHER EXAMPLE OF NESTED LOOPS
        public static void nestedLoop2()
    {   int i, j;
        for (i = 1; i <= 6; i++)
        {   for (j = 1; j <= 5; j++)
            {   if ((i + j) % 2 == 0)
                    System.out.print("*");
                else
                    System.out.print(" ");
            }
            System.out.println();
        } 
    }
    public static void main(String[] args) 
    {   Chapter6.calculate();
        Chapter6.firstForLoop();
        Chapter6.nestedLoop2();
    }
    
}