Java- volume of a cylinder

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3.00/5 (2 votes)

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Hello, i need a bit of assistance on a problem statement.
•Create a class A with the main method
•Create class b in the same work space
•In class B, create a static method that doesn’t return any value called ay that has thee double arguments i.e. Pi, radius and height. The method should print out the volume of a cylinder (Pi*R^2*H)
•In class A access the pi variable in class B and set it equal to 3.142
•Still in class A write a set of statements that will allow the user to input a value and set it equal to the variable radius. Repeat the same set of statements and set the new inputted value to the variable height in class B.
•Call the method ay in the main method.

Let me show you till where i reached:
i need to know how to access variable Pi in class A and set it to 3.142. That is the challenge i am having

What I have tried:

Java

package six;

class A {
     
     
	public static void main(String[] args) {
		// TODO Auto-generated method stub

	}
	
}
 class B{
	public static void ay (double Pi, double Radius, double Height){
		System.out.println(Pi*Radius*Radius*Height);
	}
}

Posted 17-Jun-18 3:54am

Member 13865935

Updated 17-Jun-18 21:45pm

CPallini

v2

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[no name] 17-Jun-18 12:49pm

Not that this help, but it is crazy to read about it: Pi - Wikipedia[^] Most probably I would never have read this without your question:laugh:

CPallini 18-Jun-18 2:56am

As per your requirements, class B has no pi member. That is: are you sure you reported the requirements correctly?

3 solutions

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OriginalGriff · Answer 1 · 2018-06-17T04:44:00

Solution 1

Quote:
need to know how to access variable Pi in class A and set it to 3.142

Simple:

Java

B.ay(3.142, 10.0, 10.0);

Posted 17-Jun-18 4:44am

OriginalGriff

Comments

Member 13865935 17-Jun-18 10:59am

yes but i still get an error saying ay cannot be resolved or is not a field. also who is the values of radius and height to 10.0 because they do require user to enter value. and in the second last bullet on my question says to repeat in class B.. kindly help me out understand that. I will be greatful!

Richard MacCutchan · Answer 2 · 2018-06-17T07:57:00

Solution 2

You need to write the remainder of class A first. Use a Scanner to get user input, and save the variable values. Create a variable in class B called Pi that can be accessed from outside. You can get more ideas from Trail: Learning the Java Language (The Java™ Tutorials)[^].

Posted 17-Jun-18 7:57am

Richard MacCutchan

Mohibur Rashid · Answer 3 · 2018-06-17T21:46:00

Solution 3

Your main function will be something like below

Java

public static void main(String[] args) {
	loop(more to process) {
		read radius
		read height
                call B.ay(pi, radius, height);
		do you want to process more?
	}
}

That's going to be your algorithm

Posted 17-Jun-18 21:46pm

Mohibur Rashid