无法解析调用 class 中的方法，但方法在接口和实现类中都存在（并编译）

Question

I'm writing a suite of Selenium tests in Java. Part of the program relies on a class called ResponseInterceptor.java , which uses methods from both my IReporter.java interface and Reporter.java implementation class. I am getting a Cannot resolve method "reportDone" in "IReporter" error. The problem is that reportDone() exists, and compiles, in both the interface and the implementation class. I have made sure the given paramenters match the method signature. I have also tried importing IReporter and Reporter , but this did not work either. In addition, I created a new method in the interface, implemented it, and called it from ResponseInterceptor , and the new method works just fine. This made me think that if I just copied the method and gave it a new name, implementing and calling it the same way as reportDone() , that would work. It did not. The files are all in the same directory, if that matters.

Here is the method call in ResponseInterceptor :

Browser.getReporter().reportDone(String.format("Response: %s", responseCode),
    String.format("StatusCode= %s :: URL= %s :: Header= %s :: Body= %s", statusCode, url, headers, responseBody));

Here is its definition in IReporter :

void reportDone(String stepName, String stepDescription);

Here is its implementation in Reporter :

public void reportDone(String stepName, String stepDescription) {
    report.updateTestLog(stepName, stepDescription, Status.DONE);
}

Answer 1

I found the solution. There were two IReporter classes. I simply had to cast the procedures to the correct IReporter, like so:

((automation.IReporter)Browser.getReporter().reportDone(String.format(...