2 files changed, 30 insertions, 7 deletions
diff --git a/challenge-120/ziameraj16/README.md b/challenge-120/ziameraj16/README.md
index 089adc27bb..7231130610 100644
--- a/challenge-120/ziameraj16/README.md
+++ b/challenge-120/ziameraj16/README.md
@@ -1,22 +1,22 @@
-# Swap Nibbles
+# Swap Odd Even Bits
 ## Java Solution
 
 To compile the code run
 ```java
-javac SwapNibbles.java
+javac SwapOddEvenBits.java
 ```
 To run
 ```java
-java SwapNibbles
+java SwapOddEvenBits
 ```
 ### Example
 ```bash
-/perlweeklychallenge-club/challenge-119/ziameraj16/java$ javac SwapNibbles.java
-/perlweeklychallenge-club/challenge-119/ziameraj16/java$ java SwapNibbles
+/perlweeklychallenge-club/challenge-120/ziameraj16/java$ javac SwapOddEvenBits.java
+/perlweeklychallenge-club/challenge-120/ziameraj16/java$ java SwapOddEvenBits
 Enter the number
 101
-86
-/perlweeklychallenge-club/challenge-119/ziameraj16/java$ java SwapNibbles
+154
+/perlweeklychallenge-club/challenge-120/ziameraj16/java$ java SwapOddEvenBits
 Enter the number
 18
 33
diff --git a/challenge-120/ziameraj16/java/SwapOddEvenBits.java b/challenge-120/ziameraj16/java/SwapOddEvenBits.java
new file mode 100644
index 0000000000..115493de32
--- /dev/null
+++ b/challenge-120/ziameraj16/java/SwapOddEvenBits.java
@@ -0,0 +1,23 @@
+import java.util.Scanner;
+
+public class SwapOddEvenBits {
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        System.out.println("Enter the number");
+        int number = scanner.nextInt();
+        System.out.println(swap(number));
+    }
+
+    public static int swap(int number) {
+        final String binaryString = Integer.toBinaryString(number);
+        String formattedString = String.format("%0"+ (8 - binaryString.length() ) + "d%s", 0 , binaryString);
+        StringBuilder sb = new StringBuilder(formattedString);
+        for (int i = 0; i < 7; i += 2) {
+            char temp = formattedString.charAt(i);
+            sb.replace(i, i + 1, String.valueOf(formattedString.charAt(i + 1)));
+            sb.replace(i + 1, i + 2, String.valueOf(temp));
+        }
+        return Integer.parseInt(sb.toString(), 2);
+    }
+}