title: How to install latest Postgresql JDBC jar in SQL Developer 4.0
body: <p>I am using CentOS and Postgresql as my database. </p>
  
  <p>According to <a href="https://stackoverflow.com/a/20754800/2074141">this</a> thread SQL Developer can now support Postgresql. So I manage to download the requirement such as <a href="http://www.oracle.com/technetwork/developer-tools/sql-developer/downloads/index.html" rel="nofollow noreferrer">SQL Developer 4.0</a> and <a href="http://jdbc.postgresql.org/download.html" rel="nofollow noreferrer">Postgresql jdbc connector</a>.</p>
  
  <p>Is there a step by step procedure how to install the jdbc connector to sql developer? I tried to follow the <a href="http://www.postgresql.org/docs/7.2/static/jdbc.html" rel="nofollow noreferrer">PostgreSQL documentation</a> but with no luck.</p>
  
  <p>I tried to extract/install the jar file using <code>java -jar postgresql-9.3_1100.jdbc41.jar</code> the return is <code>no main manifest attribute in postgresql-9.3_1100.jdbc41.jar</code></p>
  
  <p>my java version is: <code>1.7.0_45</code></p>