BAEL-1525: Article code completed.

core-java/src/main/java/com/baeldung/string/Palindrome.java

@@ -0,0 +1,14 @@
+package com.baeldung.string;
+
+public class Palindrome {
+
+    public boolean isPalindrome(String text) {
+        text = text.replaceAll("\\s+", "").toLowerCase();
+        int length = text.length();
+        int forward = 0;
+        int backward = length - 1;
+        boolean palindrome = true;
+        while ((backward > forward)?(palindrome=(text.charAt(forward++) == text.charAt(backward--))):false);
+        return palindrome;
+    }
+}

core-java/src/test/java/com/baeldung/string/WhenCheckingPalindrome.java

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+package com.baeldung.string;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class WhenCheckingPalindrome {
+
+    private String[] words = {
+            "Anna",
+            "Civic",
+            "Kayak",
+            "Level",
+            "Madam",
+    };
+
+    private String[] sentences = {
+            "Sore was I ere I saw Eros",
+            "Euston saw I was not Sue",
+            "Too hot to hoot",
+            "No mists or frost Simon",
+            "Stella won no wallets"
+    };
+    
+    private Palindrome palindrome = new Palindrome();
+    
+    @Test
+    public void whenWord_shouldBePalindrome() {
+        for(String word:words)
+            Assert.assertTrue(palindrome.isPalindrome(word));
+    }
+
+    @Test
+    public void whenSentence_shouldBePalindrome() {
+        for(String sentence:sentences)
+            Assert.assertTrue(palindrome.isPalindrome(sentence));
+    }
+}