CODEWITHSUNDEEP
javamethods
Jeff
Jeff

Reputation: 63

How to send values through methods

I am stumped trying to send a value through some methods as part of a question which reads

Write the following method: computeDiameter: This method accepts the radius (r) of a circle, and returns it's diameter (2*r)

It's under the "Passing values through different methods", so instead of asking me for a simple variable/formula like

double r;
double diameter = r*2; //along with Scanner and some System out prints

It's asking me to send the value of r through another method, then return the method and print out the new value for r. This is what I have so far

import java.util.*; 
public class UserSquares
{
 public static void main(String[] args)
  {
    int r = 2;
    int result=0; //I set result=0 hoping to initialize it properly. 
    computeDiameter(r);
    System.out.println(result);     
 }
public static int computeDiameter(int r)
  {
    int result = r * 2;
    return result;
  }
}

This question seemed very simple which is why i tried to tackle it. I know the basics of sending values through a method, but i don't know how to return them. I don't really have money for actual text books (so i settle for quizlet questions and stuff like that), and youtube videos don't help at all so I like coming to the forums to get help when I am really stumped but want to move on with other topics.

(this question is part of a java self test, just thought I should share that as I've asked a number of questions on this site and each time someone responds with something negatively as if I am trying to get you guys to complete my homework for me. I am not taking any Java classes, these questions are just self testing my skills so that when I do major in java programming after i finish highschool, I can have a pretty nice understanding of it. Again, this is not for a test, I am welcome to all types of explanations, as long as it is in the realm of comprehension for a beginner Java student. Please and thank you in advance)

EDIT: Thanks Guys. Immediately after I submitted this I worked on it some more and found a solution so i'll share it

new code 

import java.util.*; 
 public class UserSquares
 {
  public static void main(String[] args)
   {
     int total, r = 2;
     total = computeDiameter(r);
     System.out.println(total);     
  }
 public static int computeDiameter(int value1)
   {
     int result;
     result = value1 * 2;
     return result;
   }
 }

EDIT #2: Holy crap I didn't expect to receive so many solutions so quick. Was about to answer it myself so that it would appear to be done. Sorry for the waste of your time guys, I will read every one of them to see the different solutions you guys offered and learn them so that your time isn't totally wasted. Thanks so much.

EDIT #3: Had a redundant line remaining from my first code that I forgot to take out that went through the compilation and didn't affect the outcome in anyway, but still decided to take it out. Thanks CodeMatrix!

Upvotes: 1

Views: 193

Answers (3)

CodeMatrix
CodeMatrix

Reputation: 2154

As I said in the comment section.

Go ahead and change this

int result = 0;
computeDiameter(r);
System.out.println(result);

to this

int result = 0; //or you use int result = computeDiameter(r);
result = computeDiameter(r); 
System.out.println(result);

Upvotes: 2

Neeraj Jain
Neeraj Jain

Reputation: 7720

You have to assign the value which is being returned from computeDiameter(r) method to the result variable in order to print that.

result = computeDiameter(r);
System.out.println(result);

Upvotes: 1

Zeta Reticuli
Zeta Reticuli

Reputation: 329

its very simple:

int result = computeDiameter(r);

or just

System.out.println(coputeDiameter(r));

Upvotes: 1

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