Guangning Yu's Blog

Create the directory structure

mkdir -p src/main/java/hello
mkdir -p src/test/java/hello

Create classes

src/main/java/hello/HelloWorld.java

package hello;
import org.joda.time.LocalTime;
public class HelloWorld {
    public static void main(String[] args) {
        LocalTime currentTime = new LocalTime();
        System.out.println("The current local time is: " + currentTime);
        Greeter greeter = new Greeter();
        System.out.println(greeter.sayHello());
    }
}

src/main/java/hello/Greeter.java

package hello;
public class Greeter {
    public String sayHello() {
        return "Hello world!";
    }
}

Write a test

src/test/java/hello/GreeterTest.java

package hello;
import static org.hamcrest.CoreMatchers.containsString;
import static org.junit.Assert.*;
import org.junit.Test;
public class GreeterTest {
    private Greeter greeter = new Greeter();
    @Test
    public void greeterSaysHello() {
        assertThat(greeter.sayHel