Exam 1z0-809 topic 1 question 51 discussion

import java.io.IOException; class Folder implements AutoCloseable { public void open() { System.out.print("Open"); } @Override public void close() throws IOException { System.out.print("Close"); } } public class Test { public static void main(String[] args) throws Exception { try (Folder f = new Folder()) { f.open(); } } }

A and E are correct.

AE is right AD would be right if the visibility was not reduced to package private

AD is the correct answer final class Folder implements AutoCloseable { public void open() { System.out.print("Open"); } public final void close() { System.out.print("Close"); } } public class Test { public static void main(String[] args) throws Exception { try (Folder f = new Folder()) { f.open(); } } }

A and E are correct.

A & E are correct

Answers are A and E.

Answer is A, E.

Option A and E are correct. Tested.Here we need to implement AutoCloseable interface while using try-with resources. When we implement Autocloaseable interface, we must all its methods i.e. open and close methods.