Cannot resolve symbol 'OAException'

The error message "Cannot resolve symbol 'OAException'" is a common error that occurs in Java when the compiler is unable to find the class or package that the code is referencing.

In this case, it means that the compiler cannot find the class or package named 'OAException'. This could happen due to several reasons, such as:

1. The class or package is not imported correctly in the code.
2. The class or package is not present in the classpath.
3. The class or package is not part of the Java SDK.

To resolve this error, you can try the following steps:

1. Check if the class or package is imported correctly in the code. Make sure that the import statement is correct and the class or package name is spelled correctly.
2. Check if the class or package is present in the classpath. You may need to add the required JAR files or directories to the classpath.
3. Check if the class or package is part of the Java SDK. If it is not, you may need to download and install the required libraries or frameworks.

Once you have resolved the issue, you should be able to compile and run the code without any errors.