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Java Java Annotations Using Java's Built-In Annotations Using @Override to Fix an Error

Awais Jamil
Awais Jamil
7,539 Points
Posted by Awais Jamil
Awais Jamil
7,539 Points

Cannot Solve this Excersice

Please Help i am not Sure how to you Override this Method.

HelloWorld.java 
public class HelloWorld {
  private String programmingLanguage;

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

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

2 Answers

doesitmatter
doesitmatter
12,885 Points
doesitmatter
doesitmatter
12,885 Points

Hi Awais Jamil,

@Override
  public void sayHelloTo(String name) {
//sets name to "" meaning we remove the value we are supposed to print... not good
    String name = "";
//This gives an error, because System.out.printf() is a VOID method, it doesnt return anything.. This method itself is also void, it isn't supposed to return anything
    return System.out.printf("Hola, %s%n!", name);
  }

Notice that even if you don't return System.out.printf but just run it, your method now always returns Hola without a name. Is String name = ""; really necessary?

Good luck!

sig

Cameron Jones
Cameron Jones
10,049 Points
Cameron Jones
Cameron Jones
10,049 Points

Using the @Override method the compiler will check if it's correct with the parent class. However, the compiler throws an error, because the new method trying to Override the parent is missing its parameters, and it attempts to create an unnecessary name.