Add palindrome (#28)

* Add palindrome java

* Update paindrome.java

strings/README.md

@@ -12,3 +12,7 @@ You could use any online IDE (for an example [.net Finddle](https://dotnetfiddle
 ### JavaScript
 
 1. [Palindrome Check](js/palindrome.js)
+
+### Java
+
+1. [Palindrome Check](java/palindrome.java)

strings/java/paindrome.java

@@ -0,0 +1,39 @@
+public class Algorithm { 
+  
+    // Function that returns true if 
+    // str is a palindrome 
+    static boolean isPalindrome(String str) 
+    { 
+  
+        // Pointers pointing to the beginning 
+        // and the end of the string 
+        int i = 0, j = str.length() - 1; 
+  
+        // While there are characters toc compare 
+        while (i < j) { 
+  
+            // If there is a mismatch 
+            if (str.charAt(i) != str.charAt(j)) 
+                return false; 
+  
+            // Increment first pointer and 
+            // decrement the other 
+            i++; 
+            j--; 
+        } 
+  
+        // Given string is a palindrome 
+        return true; 
+    } 
+  
+    // Driver code 
+    public static void main(String[] args) 
+    { 
+        String str = "geeks"; 
+  
+        if (isPalindrome(str)) 
+            System.out.print("Yes"); 
+        else
+            System.out.print("No"); 
+    } 
+}