Explain the scenario how Default Method can cause Multiple Inheritance Ambiguity Problem.

Java class can implement multiple interfaces and each interface can define default method with same method signature, therefore, the inherited methods can conflict with each other.

public interface Interface1 { 
    default void myDefaultMethod(){ 
        System.out.println("Interface One default method"); 
    } 
}
public interface Interface2 {
    default void myDefaultMethod(){
        System.out.println("Interface Two default method");
    }
}
public class ImplClass implements Interface1, Interface2  {
}

The above code will fail to compile with the error. To fix this class, we need to provide default method implementation.

public class ImplClass implements Interface1, Interface2  {
    public void myDefaultMethod() {
     }
}

Additionally, we may invoke default implementation provided by any of super interface by using super keyword as shown below.

public class ImplClass implements Interface1, Interface2  {
    public void myDefaultMethod() {
        Interface2.super.myDefaultMethod();
     }
}

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