BAEL-6811 Move folders

core-java-modules/core-java-string-algorithms/pom.xml

@@ -39,6 +39,11 @@
             <artifactId>emoji-java</artifactId>
             <version>${emoji-java.version}</version>
         </dependency>
+        <dependency>
+            <groupId>com.kcthota</groupId>
+            <artifactId>emoji4j</artifactId>
+            <version>6.0</version>
+        </dependency>
     </dependencies>
 
     <build>
@@ -52,6 +57,8 @@
     </build>
 
     <properties>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
         <ahocorasick.version>0.4.0</ahocorasick.version>
         <emoji-java.version>4.0.0</emoji-java.version>
     </properties>

core-java-modules/core-java-string-algorithms/src/test/java/com/baeldung/findemojis/FindEmojisUnitTest.java

@@ -0,0 +1,44 @@
+package com.baeldung.findemojis;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+import com.vdurmont.emoji.EmojiManager;
+
+import emoji4j.EmojiUtils;
+
+public class FindEmojisUnitTest {
+
+    @Test
+    public void givenAWord_whenUsingEmoji4J_thenDetectEmoji() {
+        boolean emoji = EmojiUtils.isEmoji("\uD83D\uDC3B");
+        assertTrue(emoji);
+
+        boolean notEmoji = EmojiUtils.isEmoji("w");
+        assertFalse(notEmoji);
+    }
+
+    @Test
+    public void givenAWord_whenUsingEmojiJava_thenDetectEmoji() {
+        boolean emoji = EmojiManager.isEmoji("\uD83D\uDC3B");
+        assertTrue(emoji);
+
+        boolean notEmoji = EmojiManager.isEmoji("w");
+        assertFalse(notEmoji);
+    }
+
+    @Test
+    public void givenAWord_whenUsingRegex_thenDetectEmoji() {
+        String regexPattern = "[\uD800-\uDBFF\uDC00-\uDFFF]+";
+        String emojiString = "\uD83D\uDC3B";
+        boolean emoji = emojiString.matches(regexPattern);
+        assertTrue(emoji);
+
+        String notEmojiString = "w";
+        boolean notEmoji = notEmojiString.matches(regexPattern);
+        assertFalse(notEmoji);
+    }
+
+}