A common mistake for front matter start and end symbols

1. I have started the front matter with ``` symbol, that's why it was showing error.

2. Front matter should always start and end with --- ( 3 hyphen) 

Example front matter is given below

---
layout: post
title: lorem ipsum dolar sit laurel melakan and the
author: gauravkukade
categories: Abc, Xyz
description: lorem ipsum dolar sit laurel melakan and the lorem ipsum dolar sit laurel melakan and the
---

Author: gauravkukade

_posts/java-string/2019-12-10-compare-strings-in-java.md

@@ -1,11 +1,11 @@
-```
+---
 layout: post
 title: How Do I Compare Strings In Java
 author: gaurav
 categories: Java, Core Java, String
 description: In this article you are going to learn how to compare strings. What problem occurs when you compare string using `equals to` (`=`)operator.
 featured: true
-```
+---
 
 In this article you are going to learn how to compare strings. What problem occurs when you compare string using `equals to` (`=`)operator.