The classical introductory exercise. Just say "Hello, World!".
"Hello, World!" is the traditional first program for beginning programming in a new language or environment.
The objectives are simple:
If everything goes well, you will be ready to fetch your first real exercise.
Since this is your first Java exercise, we've included a detailed TUTORIAL.md file that guides you through your solution. Check it out for tips and assistance!
You can run all the tests for an exercise by entering
$ gradle test
in your terminal.
This is an exercise to introduce users to using Exercism http://en.wikipedia.org/wiki/%22Hello,_world!%22_program
It's possible to submit an incomplete solution so you can see how others have completed the exercise.
import org.junit.Test;
import static org.junit.Assert.assertEquals;
public class GreeterTest {
@Test
public void testThatGreeterReturnsTheCorrectGreeting() {
assertEquals("Hello, World!", new Greeter().getGreeting());
}
}
public class HelloWorld {
public static String hello(String name) {
if (name == null || name.isEmpty()) {
return "Hello, World!";
}
return String.format("Hello, %s!", name);
}
}
A huge amount can be learned from reading other people’s code. This is why we wanted to give exercism users the option of making their solutions public.
Here are some questions to help you reflect on this solution and learn the most from it.
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