What is wrong with the following interface? public interface House { @Deprecated

Question

What is wrong with the following interface?
public interface House {   

@Deprecated   

void open();

void openFrontDoor();   

void openBackDoor();}

2- Consider this implementation of the House interface, shown in Question 1.
public class MyHouse implements House {   

public void open() {}   

public void openFrontDoor() {}   

public void openBackDoor() {}

}

If you compile this program, the compiler produces a warning because open was deprecated (in the interface). What can you do to get rid of that warning?

3- Will the following code compile without error? Why or why not?
public @interface Meal { ... }
@Meal("breakfast", mainDish="cereal")

@Meal("lunch", mainDish="pizza")

@Meal("dinner", mainDish="salad")public void evaluateDiet() { ... }

4- Define an annotation type for an enhancement request with elements id, synopsis, engineer, and date. Specify the default value as unassigned for engineer and unknown for date.

Explanation / Answer

Hi friend I have answered first two questions.

Please repost other in separate post.

Please let me know in case of any issue in first 2.

1)

way to a deprecation of a method in an interface which will prevent implementation of the method
So we can not Deprecated method in interface

2)

use: javac -Xlint:deprecation MyHouse.java command to compile

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