ErrorOracle
java

java.lang.IllegalArgumentException: argument type mismatch

Error message

java.lang.IllegalArgumentException: argument type mismatch

What broke

This error occurs when a method is called with an argument that does not match the expected type. For example, if a method expects an integer but receives a string, this exception will be thrown.

Why it broke

It broke because Java is a statically typed language, meaning that types are checked at compile time. If the types do not match, the runtime will throw an IllegalArgumentException to indicate that the provided argument is not suitable for the method being called.

How to fix

To fix this issue, check the method signature to determine the expected argument types. Ensure that the arguments you are passing match those types exactly, and if necessary, convert or cast the arguments to the appropriate type.

Code fix

methodName((ExpectedType) argument);

Explained by ErrorOracle

Prevention tip

Ensure that the arguments you are passing match those types exactly, and if necessary, convert or cast the arguments to the appropriate type.

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