How to Solve 'java.lang.ClassNotFoundException: Didn't find class on path: dexpathlist' in Java?-C++-php.cn

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How to Solve 'java.lang.ClassNotFoundException: Didn't find class on path: dexpathlist' in Java?

Linda Hamilton

Dec 22, 2024 am 03:45 AM

How to Solve

Solving "java.lang.ClassNotFoundException: Didn't find class on path: dexpathlist" in Java

Developers working on projects that employ pure native NDK often encounter the "java.lang.ClassNotFoundException: Didn't find class on path: dexpathlist" error when executing their projects. This issue arises when the Java Virtual Machine (JVM) cannot locate the specified class within the defined classpath.

Troubleshooting Steps:

To resolve this error, several troubleshooting steps can be taken:

Disable Instant Run:
- Open Android Studio and navigate to File -> Settings -> Build, Execution, Deployment -> Instant Run.
- Uncheck the checkbox for instant run and rebuild the project.
Verify Project Structure:
- Ensure that the main activity class is properly declared in the AndroidManifest.xml file.
- Check if the main activity class is defined in the correct Java package within the project structure.
Inspect Classpath Configuration:
- Examine the Android.mk file to confirm that all necessary dependencies are correctly added to the classpath.
- Verify that the required JAR or AAR files are present in the libs folder within the project structure.
Review JNI Interface:
- Inspect the JNI interface between Java and native code to ensure that the class is correctly exposed to the Java side.
- Check the native library's header files and ensure that the function prototypes match the Java method signatures.
Clean and Rebuild Project:
- Clean the project to remove any temporary artifacts that may interfere with the classpath resolution.
- Rebuild the project to ensure that the latest code changes are reflected in the classpath.
Inspect Build Log:
- Review the build log for any errors or warnings related to classpath configuration.
- Check for missing or invalid dependencies or any other issues that may hinder the classpath lookup.

By following these steps, developers can systematically troubleshoot and resolve the "java.lang.ClassNotFoundException: Didn't find class on path: dexpathlist" error in their Java projects.

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