Online Access Free 1z0-830 Practice Test

Which three of the following are correct about the Java module system?

• A.The unnamed module exports all of its packages.
• B.If a package is defined in both a named module and the unnamed module, then the package in the unnamed module is ignored.
• C.We must add a module descriptor to make an application developed using a Java version prior to SE9 run on Java 11.
• D.Code in an explicitly named module can access types in the unnamed module.
• E.If a request is made to load a type whose package is not defined in any known module, then the module system will attempt to load it from the classpath.
• F.The unnamed module can only access packages defined in the unnamed module.

Which of the following statements are correct?

• A.You can use 'private' access modifier with all kinds of classes
• B.You can use 'public' access modifier with all kinds of classes
• C.You can use 'protected' access modifier with all kinds of classes
• D.None
• E.You can use 'final' modifier with all kinds of classes

What does the following code print?
java
import java.util.stream.Stream;
public class StreamReduce {
public static void main(String[] args) {
Stream<String> stream = Stream.of("J", "a", "v", "a");
System.out.print(stream.reduce(String::concat));
}
}

• A.Optional[Java]
• B.Java
• C.Compilation fails
• D.null

Given:
java
double amount = 42_000.00;
NumberFormat format = NumberFormat.getCompactNumberInstance(Locale.FRANCE, NumberFormat.Style.
SHORT);
System.out.println(format.format(amount));
What is the output?

• A.42 000,00 €
• B.42000E
• C.42 k
• D.42000

What is the output of the following snippet? (Assume the file exists)
java
Path path = Paths.get("C:\\home\\joe\\foo");
System.out.println(path.getName(0));

• A.IllegalArgumentException
• B.C
• C.C:
• D.home
• E.Compilation error