예, Java9부터 인터페이스에서 private 메소드를 사용할 수 있습니다.
예
interface MyInterface { public abstract void demo(); public default void defaultMethod() { privateMethod(); staticPrivateMethod(); System.out.println("This is a default method of the interface"); } public static void staticMethod() { staticPrivateMethod(); System.out.println("This is a static method of the interface"); } private void privateMethod(){ System.out.println("This is a private method of the interface"); } private static void staticPrivateMethod(){ System.out.println("This is a static private method of the interface"); } } public class InterfaceMethodsExample implements MyInterface { public void demo() { System.out.println("Implementation of the demo method"); } public static void main(String[] args){ InterfaceMethodsExample obj = new InterfaceMethodsExample(); obj.defaultMethod(); obj.demo(); MyInterface.staticMethod(); } }
출력
This is a private method of the interface This is a static private method of the interface This is a default method of the interface Implementation of the demo method This is a static private method of the interface This is a static method of the interface