Missing method body, or declare abstract in Java

Question

I\'m new to Java and tried to get things running on my computer.

A simple \"hello world program\" fails calling a method

class helloworld
{   
             


        

Answer 1

This line:

public static void helloWorld();

is your problem. Ending a function with a semicolon implies you want it to be abstract and not have a body. This is similar to how methods in interfaces are declared, or if they are marked abstract i.e. no body.