Android Local PostgreSQL Connection Configuration

configure_android_localhost_postgresql_connection.java

private final String host = "10.0.2.2";
private final String database = "postgres";
private final int port = 5432;
private final String user = "postgres";
private final String pass = "123456";

How can I find this file? Or do I have to create that?

The file is not that important, it is important to use these configurations in place. You can copy these as it is or use it in another way.