What is the result when trying to compiling the following code(abstract and interface)? : Questions « Object Oriented « SCJP

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public class MyClass implements MyInterface {
  public void doIt() {
  }
}

abstract class Abstract1 extends MyClass {
}

abstract class Abstract2 extends MyClass {
  public void doIt(int x) {
  }
}

class Phone3 extends MyClass implements MyInterface {
  public void doStuff() {
  }
}

interface MyInterface {
  public void doIt();
}