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Asked: 2024-09-27T07:30:16+05:30 In:

can’t load driver class ‘org.postgresql.driver’

I’m currently facing an issue while trying to connect to a PostgreSQL database using Java. Specifically, I’m getting an error message that says: “can’t load driver class ‘org.postgresql.driver’.” I’ve double-checked that I have the PostgreSQL JDBC driver included in my project’s build path, but I still can’t seem to resolve the issue.

I referenced the driver in my code with the following line: `Class.forName(“org.postgresql.driver”);`, assuming this would load the driver properly. However, I now realize that the correct class name might actually be `org.postgresql.Driver` with a capital “D.” I’ve confirmed that the driver’s JAR file is in the classpath, so I’m a bit confused as to what’s causing the problem.

Also, I’d like to know if this error typically arises only when working in a standalone application, or could it also happen if I’m using a framework like Spring? Any guidance on properly loading the driver or troubleshooting steps would be greatly appreciated, as I’m not sure what the next steps should be. Thank you!

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    2 Answers


    1. The error message “Can’t load driver class ‘org.postgresql.driver'” typically arises due to a misconfiguration in your Java application when attempting to connect to a PostgreSQL database. The PostgreSQL JDBC driver is being referenced incorrectly in your code, as the correct class name is ‘org.postgresql.Driver’ (note the capitalization). Verify that your classpath is correctly set to include the PostgreSQL JDBC driver JAR file. If you’re using a build tool like Maven or Gradle, ensure that the dependency is declared properly in your `pom.xml` or `build.gradle` file.

      Additionally, make sure the JDBC driver JAR is indeed included in your runtime environment. For instance, if you are running your application from an IDE, confirm that the driver is included in your project’s libraries. If you are executing from the command line, check that the classpath is correctly specified, and the driver JAR is in the specified directory. Correcting the class name and ensuring the JAR file is on the classpath should resolve this issue, allowing your application to make the necessary connection to the PostgreSQL database.

    2. So, I’m having this weird issue where I can’t load the driver class ‘org.postgresql.driver’. It’s like, what even is that? I thought I was supposed to use ‘org.postgresql.Driver’ (with a capital ‘D’) but maybe I messed up somewhere?

      I read somewhere that I might not have the PostgreSQL JDBC driver in my classpath or something like that. How do I even check that? I guess I have to download it from the internet? But where? And then do I just put it in some folder?

      Oh, and there might be this thing called Maven or Gradle that can help me with libraries, but I’m not really sure how those work yet. Do I need to add some dependencies or what? This is really confusing!

      Can someone please help me figure this out? I just want to connect to my database without running into these driver issues. Is there a simple way to fix this? Any advice would totally help!

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