How to add variables in json file?
<p>Below is json file. I want to use variables for db password and db username. How can I add a variable in json ?</p>

<pre><code>{
  "name" : "mydb3",
  "storage" : {
    "binaryStorage" : {
      "type"  : "database",
      "driverClass" : "com.mysql.jdbc.Driver",
      "url" : "$jdbcdburl",
      "username" : "$jdbcusername",
      "password" : "$jdbcpassword"
    }
  },
  "workspaces" : {
    "default" : "default",
    "allowCreation" : true
  }
}
</code></pre>