METHODS - Introduction to Java Programming - page 213

The method header is

public static void displayPattern( int n)

*5.7

( Financial application: compute the future investment value ) Write a method that
computes future investment value at a given interest rate for a specified number of
years. The future investment is determined using the formula in Programming
Exercise 2.21.
Use the following method header:

public static double futureInvestmentValue(
double investmentAmount, double monthlyInterestRate, int years)
For example, futureInvestmentValue(10000, 0.05/12, 5) returns
12833.59 .
Write a test program that prompts the user to enter the investment amount (e.g.,
1000) and the interest rate (e.g., 9%) and prints a table that displays future value
for the years from 1 to 30, as shown below:

The amount invested:
Annual interest rate:
Years

1000

9

Future Value

1 1093.80

2 1196.41

...
29

13467.25

30 14730.57

5.8

( Conversions between Celsius and Fahrenheit ) Write a class that contains the fol-
lowing two methods:

/** Convert from Celsius to Fahrenheit */
public static double celsiusToFahrenheit( double celsius)

/** Convert from Fahrenheit to Celsius */
public static double fahrenheitToCelsius( double fahrenheit)
The formula for the conversion is:
fahrenheit = (9.0 / 5) * celsius + 32
celsius = (5.0 / 9) * (fahrenheit - 32)
Write a test program that invokes these methods to display the following tables:

Celsius Fahrenheit | Fahrenheit Celsius

40.0 104.0 | 120.0 48.89

39.0 102.2 | 110.0 43.33

...
32.0 89.6

| 40.0 4.44

31.0 87.8 | 30.0 -1.11

5.9

( Conversions between feet and meters ) Write a class that contains the following
two methods:

/** Convert from feet to meters */
public static double footToMeter( double foot)