Cannot find symbol assertEquals

Question

I\'m trying to write my first unit tests for a calculator, but NetBeans says it can\'t find the symbol assertEquals and annotation @Test.
Should i

Answer 1

assertEquals is a static method. Since you can't use static methods without importing them explicitly in a static way, you have to use either:

import org.junit.Assert;
...
Assert.assertEquals(...)

or:

import static org.junit.Assert.assertEquals;
...
assertEquals(...)

For @Test it's a little bit different. @Test is an annotation as you can see by the @. Annotations are imported like classes.

So you should import it like:

import org.junit.Test;

Generally avoid using wildcards on imports like import org.junit.*. For reasons see Why is using a wild card with a Java import statement bad?.