Removed unnecessary main method. Changed assert methods to the one for comparing integers

java-strings-3/src/test/java/com/baeldung/string/wordcount/WordCountUnitTest.java

@@ -1,6 +1,6 @@
 package com.baeldung.string.wordcount;
 
-import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.Assert.assertEquals;
 
 import org.junit.Test;
 public class WordCountUnitTest {
@@ -9,16 +9,16 @@ public class WordCountUnitTest {
 
     @Test
     public void givenStringWith8Words_whenUsingRegexCount_ThenResultEqual8() {
-        assertThat(WordCounter.countWordsUsingRegex(string2) == 8).isTrue();
+        assertEquals(8, WordCounter.countWordsUsingRegex(string2));
     }
 
     @Test
     public void givenStringWith8Words_whenUsingManualMethod_ThenWordCountEqual8() {
-        assertThat(WordCounter.countWordsManually(string1) == 8).isTrue();
+        assertEquals(8, WordCounter.countWordsManually(string1));
     }
 
     @Test
     public void givenAStringWith8Words_whenUsingTokenizer_ThenWordCountEqual8() {
-        assertThat(WordCounter.countWordsUsingTokenizer(string1) == 8).isTrue();
+        assertEquals(8, WordCounter.countWordsUsingTokenizer(string1));
     }
 }