Given:
final class Folder { //line n1
//line n2
public void open () {
System.out.print("Open");
}
}
public class Test {
public static void main (String [] args) throws Exception { try (Folder f = new Folder()) { f.open();
}
}
}
Open Close?
Which two modifications enable the code to print
line n1 with:
To ensure the class 'Folder' can be used in a try-with-resources statement, it must implement the AutoCloseable interface to have an automatically invoked 'close' method when exiting the resource scope. Therefore, replacing 'class Folder' with 'class Folder implements AutoCloseable' at line n1 is necessary. Additionally, the 'close' method must be public to fulfill the contract of AutoCloseable, which states that the 'close' method in the implementing class must be public. This method should also include the required functionality, which fits the option of inserting 'public void close () throws IOException { System.out.print("Close"); }' at line n2. Hence, the necessary changes are to implement AutoCloseable and add a public 'close' method.
A, E is correct D is wrong because we cannot reduce the visibility of the inherited method from AutoCloseable
the answer is A and E
A,D is the Correct answer In A,E error is coming: error: cannot find symbol public void close () throws IOException { ^ symbol: class IOException location: class Folder 1 error
AE is correct sorry for above
A and E are correct.
The answer is AE, tested.
Answer: AD