The following questions are designed to use an interface in a system, which needs to print customized welcome message. For example, the welcome message to Sue will be "Dear Sue, welcome!"

1. What is wrong with the following interface?

public interface Welcome {

String name;

void greeting() {

System.out.println("Dear " + name + ", welcome!");

}

}

2. Fix the interfance in question 1.

3. After fixing the interface in, define a class implmenting the Welcome interface which can embed a name in a welcome message then print it to console.

4. Use the class defined in question 3 to create an object. Use the object to print a welcome message to you, which means your name should be embedded in the print welcome message.