Question

Maybe I’m forgetting an import at the head, but nothing seems to work. I’m trying to learn java and still beginner.

public class Main {

    public static void main(String[] args) {
    String s1=getInput("Enter First Number") ;
    String s2=getInput("Enter second Number");

    double d1=Double.parseDouble(s1);
    double d2=Double.parseDouble(s2);
    double result=d1+d2 ;
    System.out.println(result);

 }}

results in an error because the compiler doesn’t recognize getInput("");

This is from Eclipse:

Exception in thread "main" java.lang.Error: Unresolved compilation problems: 
        The method getInput(String) is undefined for the type Main
        The method getInput(String) is undefined for the type Main

        at Main.main(Main.java:8)

Answer 1

You’re calling a getInput()-method which doesn’t exist in your class. Have a look at this Java tutorial on I/O:
http://docs.oracle.com/javase/tutorial/essential/io/cl.html