JAVA - Invalid Method Declaration with two (2) input

Question

Attached are the codes, kindly help to point out which function needed to fix. Thanks!

P.S I have no knowledge to lil about JAVA prog. but I somehow understand the flow of the program. Was trying to know one to work.

https://code.sololearn.com/c5djG86j3YfB/?ref=app

Answer 1

Line 31
Return type "double" missing

public static double computeChange() {

Answer 2

Yes, but you have to define it in the function Signatur!
Like you have done it in all other functions.

Answer 3

Its finally working, thanks!

Answer 4

And also do proper formatting of your code so it will be more readable for others

Answer 5

I just copied it to some documents just for try outs, gonna clean it up now that its working. Thanks!

Answer 6

Line no 31 it should be with return type u missed

public static double computeChange() {
double ch;
ch= payment- costtax;
return ch; }

Answer 7

You are returning value its correct but your function need any return type int ,float , double or void or anything if u dont want to write then make it constructor.

you have written only access specifiers see your other functions u have added return type properly