Ensure you don't have older versions of Hutool in your classpath which might cause NoClassDefFoundError . Conclusion
Forget the headache of SimpleDateFormat . Use DateUtil for one-line formatting and offset calculations. hutool pro 30 download work
The core library doesn't force you to manage a complex dependency tree. Ensure you don't have older versions of Hutool
If your IDE cannot find the package, try forcing an update of your local Maven repository or checking your internet proxy settings. hutool pro 30 download work
High-speed conversion between Java beans and JSON strings. Troubleshooting Common Issues