1Z0-816 무료 덤프문제 온라인 액세스

Given:

Assume the file on path does not exist. What is the result?

• A.The compilation fails.
• B./u01/work/filestore.txt is not deleted.
• C.Exception
• D./u01/work/filestore.txt is deleted.

Which statement about a functional interface is true?

• A.It is declared with a single default method.
• B.It is declared with a single abstract method.
• C.It cannot have any private methods and static methods.
• D.It must be defined with the public access modifier.
• E.It must be annotated with @FunctionalInterface.

Given:

What is required to make the Foo class thread safe?

• A.Move the declaration of lock inside the foo method.
• B.No change is required.
• C.Make the declaration of lock static.
• D.Replace the lock constructor call with new ReentrantLock (true).

Given:
jdeps -jdkinternals C:\workspace4\SimpleSecurity\jar\classes.jar
Which describes the expected output?

• A.The -jdkinternals option analyzes all classes in the .jar and prints all class-level dependencies.
• B.jdeps lists the module dependencies and the package names of all referenced JDK internal APIs. If any are found, the suggested replacements are output in the console.
• C.jdeps outputs an error message that the -jdkinternals option requires either the -summary or the - verbose options to output to the console.
• D.The -jdkinternals option analyzes all classes in the .jar for class-level dependencies on JDK internal APIs. If any are found, the results with suggested replacements are output in the console.

Given:
List<String> list1 = new ArrayList<>();
list1.add("A");
list1.add("B");
List list2 = List.copyOf(list1);
list2.add("C");
List<List<String>> list3 = List.of(list1, list2);
System.out.println(list3);
What is the result?

• A.[[A, B, C], [A, B, C]]
• B.An exception is thrown at run time.
• C.[[A, B], [A, B, C]]
• D.[[A, B],[A, B]]