Homework 2
Problem 1:
Write an application that converts a number of seconds into
its equivalent representation as hours, minutes and seconds.
The application should have a class named Convertor with a method
convert (int secs). You should be able to call the convert method
and the convert method should print out the results as detailed
below. For instance if we wanted to convert 9999 seconds:
public class Convertor {
/*
you will need to fill in the body of this method */
public
void convert (int secs) {
/*
put your code in here */
}
public
static void main (String [] args) {
Convertor
myConvertor = new Convertor ( );
myConvertor.convert(9999);
}
}
Your application should output:
"9999" seconds converts to:
2 hours
46 minutes
39 seconds
where the initial number of seconds is surrounded
by quotes, and the second, third and fourth lines are indented
1 tab and there is another tab after the number but before the
label, i.e. (tab)2(tab)hours.
Program your convertor to convert 4237 seconds
instead of the 9999 example.
Problem 2:
Write an application that takes the lengths of 3 sides of a
triangle and computes the area using Heron's formula: Area =
SquareRoot[s(s-a)(s-b)(s-c)] s represents 1/2 (half) the perimeter,
and a,b,c are the 3 lengths. For instance if we want the area
of a triangle with sides 3,4,5 we would have:
public class Triangle {
/*you
have to fill in the body of this method*/
public
double heron(int a, int b, int c) {
double
area = 0.0d;
/*
place code here */
return
area;
}
public
static void main (String [] args) {
Triangle
myTriangle = new Triangle( );
double
area = myTriangle.heron (3, 4, 5);
System.out.println("The
area of the triangle is: "+area);
}
}
Your application should output:
The area of the triangle is: 6.0
Program your application to compute a triangle
of sides : 31, 47, 56 instead of the 3, 4, 5 triangle in the
example.
SUBMISSION INSTRUCTIONS:
Submit your two .java files to Webwork.
