?? testex6.java
字號:
// interfaces.TestEx6.java
// TIJ4 Chapter Interfaces, Exercise 6, page 320
// Prove that all the methods in an interface are automatically public
/* Solution includes, in package interfaces.ex6:
* package interfaces.ex6;
*
* interface Ex6 {
* void sayOne();
* void sayTwo();
* void sayThree();
* }
*
* public class Ex6b implements Ex6 {
* // Error: cannot assign weaker access to public methods:
* // void sayOne() { System.out.println("one"); } // implies package * // access
* // protected void sayTwo() { System.out.println("two"); }
* // private void sayThree() { System.out.println("three"); }
* // must be maintained public:
* public void sayOne() { System.out.println("one"); }
* public void sayTwo() { System.out.println("two"); }
* public void sayThree() { System.out.println("three"); }
* }
*/
import interfaces.ex6.*;
public class TestEx6 {
public static void main(String[] args) {
Ex6b x = new Ex6b();
x.sayOne();
x.sayTwo();
x.sayThree();
}
}
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