When using the @Override annotation, is it only the method signatures, return type and parameters that need to match?

Question

Can't seem to get passed this @Override annotation exercise. I've checked that the method signature, return type and parameters match but it still won't accept it. Any ideas?

HelloWorld.java

public class HelloWorld {
  private String programmingLanguage;

  public HelloWorld() {
    programmingLanguage = "Java";
  }

  public void sayHelloTo(String name) {
    System.out.printf("Hello, %s%n!", name);  
  }
}

HolaWorld.java

public class HolaWorld extends HelloWorld {
  @Override
  public void sayHelloTo(String name) {
    String name = "";
    System.out.printf("Hola, %s%n!", name);
  }
}

Answer 1 · 2016-11-09T11:09:44Z

November 9, 2016 11:09am

You are overriding the method correctly, that's not what is producing the compiler error.

Whenever you get a compiler error your first response should always be to look at the actual error message the compiler has produced. Compiler errors are often quite explicit about what is wrong in your code. The error message your code generates is this:

./HolaWorld.java:4: error: variable name is already defined in method sayHelloTo(String)
    String name = "";
           ^
1 error

You are getting a compiler error because the first thing the overridden sayHelloTo method does is declare a "name" variable even though it already has a "name" variable declared in its parameter list.

If you remove the line the compiler is pointing out, you'll be able to pass the challenge.

Answer 2 · 2017-07-17T12:36:57Z

July 17, 2017 12:36pm

just remove "String name = """ from HolaWorld class it will work.....

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Kulvir Bajwa

Kulvir Bajwa

When using the @Override annotation, is it only the method signatures, return type and parameters that need to match?

2 Answers

andren

andren

Sagar Thakkar

Sagar Thakkar