Accesing remote postgres from Windows gives java.sql.SQLException: No suitable driver found for jdbc:postgresql

Question

I have following java code:

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;


public class Test {
 
    public static void main(String[] args) {
  
        Connection conn = null;
 
        try {
            
            String dbURL = "jdbc:postgresql://10.99.1.173/mydb";
            String user = "postgres";
            String pass = "postgres";
 
            conn = DriverManager.getConnection(dbURL, user, pass);
            if (conn != null) {
                System.out.println("Connected to database!!!");
            }
  
        } catch (SQLException ex) {
            ex.printStackTrace();
        } finally {
            try {
                if (conn != null && !conn.isClosed()) {
                    conn.close();
                }
            } catch (SQLException ex) {
                ex.printStackTrace();
            }
        }
    }
}

I have postgres driver pasted in the same folder as Test class:

I have also pasted postgres driver jar in C:\Program Files\Java\jdk-14.0.2\lib .

Still running class gives me driver not found error:

F:\delete>java Test      
java.sql.SQLException: No suitable driver found for jdbc:postgresql://10.99.1.173/mydb
        at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:702)
        at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:228)
        at Test.main(Test.java:20)

I get the same error even if I set the path in java command itself:

F:\delete>java -cp "F:\delete;C:\Program Files\Java\jdk-14.0.2\lib" Test
java.sql.SQLException: No suitable driver found for jdbc:postgresql://10.99.1.173/mydb
        at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:702)
        at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:228)
        at Test.main(Test.java:20)

What I am missing here?

Answer 1

To have java load the jars in a direct use

java -cp "F:\delete*;F:\delete." Test

or specifically state the jar file by name in the classpath.

java -cp "F:\delete\postgresql-42.40.jar;F:\delete\Test.class" Test