Free Oracle 1Z1-816 Exam Dumps Questions & Answers

Which statement about a functional interface is true?

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

Which interface in the java.util.function package can return a primitive type?

• A.LongConsumer
• B.Supplier
• C.ToDoubleFunction
• D.BiFunction

Which code fragment does a service use to load the service provider with a Print interface?

• A.private java.util.ServiceLoader<Print> loader = ServiceLoader.load (Print.class);
• B.private Print print = com.service.Provider.getInstance();
• C.private Print print = new com.service.Provider.PrintImpl();
• D.private java.util.ServiceLoader<Print> loader = new java.util.ServiceLoader<> ();

Which three guidelines are used to protect confidential information? (Choose three.)

• A.Treat user input as normal information.
• B.Limit access to objects holding confidential information.
• C.Clearly identify and label confidential information.
• D.Transparently handle information to improve diagnostics.
• E.Manage confidential and other information uniformly.
• F.Validate input before storing confidential information.
• G.Encapsulate confidential information.

Given:
var data = new ArrayList<>();
data.add("Peter");
data.add(30);
data.add("Market Road");
data.set(1, 25);
data.remove(2);
data.set(3, 1000L);
System.out.print(data);
What is the output?

• A.[Market Road, 1000]
• B.[Peter, 25, null, 1000]
• C.An exception is thrown at run time.
• D.[Peter, 30, Market Road]