Update README.md

Author: GouravRusiya30

README.md

@@ -174,7 +174,7 @@ Check out ---> [Sample PR](https://github.com/codedecks-in/LeetCode-Solutions/pu
 | --- | ---------------------------------------------------------------- | --------------------------------------- | ---------- | ------ | ---------- | --------- | ---- |
 | 204 | [Count Primes](https://leetcode.com/problems/count-primes)       | [C++](./C++/Count-Primes.cpp)    | _O(n(log(logn)))_ | _O(n)_ | Easy       | Math      |      |
 | 168 | [Excel Sheet Column Title](https://leetcode.com/problems/excel-sheet-column-title) |[C++](./C++/Excel-Sheet-Column-Title.cpp)| _O(n)_ | _O(n)_ | Easy | String| |
-| 7   | [Reverse Integer](https://leetcode.com/problems/reverse-integer)   |[C++](./C++/Reverse-Integer.cpp)         | _O(n)_      | _O(n)_ | Easy       | Math      | |
+| 007   | [Reverse Integer](https://leetcode.com/problems/reverse-integer)   | [Java](./Java/reverse-integer.java) <br> [C++](./C++/Reverse-Integer.cpp)         | _O(n)_      | _O(n)_ | Easy       | Math      | |
 
 
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