| Exam Code | 1z0-819 |
| Exam Name | Java SE 11 Developer |
| Questions | 257 Questions Answers With Explanation |
| Update Date | July 15,2024 |
| Price |
Was : |
Prepare Yourself Expertly for 1z0-819 Exam:
Our team of highly skilled and experienced professionals is dedicated to delivering up-to-date and precise study materials in PDF format to our customers. We deeply value both your time and financial investment, and we have spared no effort to provide you with the highest quality work. We ensure that our students consistently achieve a score of more than 95% in the Oracle 1z0-819 exam. You provide only authentic and reliable study material. Our team of professionals is always working very keenly to keep the material updated. Hence, they communicate to the students quickly if there is any change in the 1z0-819 dumps file. The Oracle 1z0-819 exam question answers and 1z0-819 dumps we offer are as genuine as studying the actual exam content.
You can reach out to our agents at any time for guidance; we are available 24/7. Our agent will provide you information you need; you can ask them any questions you have. We are here to provide you with a complete study material file you need to pass your 1z0-819 exam with extraordinary marks.
Pass4surexams provide trusted study material. If you want to meet a sweeping success in your exam you must sign up for the complete preparation at Pass4surexams and we will provide you with such genuine material that will help you succeed with distinction. Our experts work tirelessly for our customers, ensuring a seamless journey to passing the Oracle 1z0-819 exam on the first attempt. We have already helped a lot of students to ace IT certification exams with our genuine 1z0-819 Exam Question Answers. Don't wait and join us today to collect your favorite certification exam study material and get your dream job quickly.
Enroll with confidence at Pass4surexams, and not only will you access our comprehensive Oracle 1z0-819 exam question answers and dumps, but you will also benefit from a remarkable offer – 90 days of free updates. In the dynamic landscape of certification exams, our commitment to your success doesn't waver. If there are any changes or updates to the Oracle 1z0-819 exam content during the 90-day period, rest assured that our team will promptly notify you and provide the latest study materials, ensuring you are thoroughly prepared for success in your exam."
Quality is the heart of our service that's why we offer our students real exam questions with 100% passing assurance in the first attempt. Our 1z0-819 dumps PDF have been carved by the experienced experts exactly on the model of real exam question answers in which you are going to appear to get your certification.
Which set of commands is necessary to create and run a custom runtime image from Java source files?
A. java, jdeps
B. javac, jlink
C. jar, jlink
D. javac, jar
Which statement about a functional interface is true?
A. It must be defined with the public access modifier.
B. It must be annotated with @FunctionalInterface.
C. It is declared with a single abstract method.
D. It is declared with a single default method.
E. It cannot have any private methods and static methods.
Which two statements are true about the modular JDK? (Choose two.)
A. The foundational APIs of the Java SE Platform are found in the java.base module.
B. An application must be structured as modules in order to run on the modular JDK.
C. It is possible but undesirable to configure modules’ exports from the command line.
D. APIs are deprecated more aggressively because the JDK has been modularized.
Which two statements are true about Java modules? (Choose two.)
A. Modular jars loaded from --module-path are automatic modules.
B. Any named module can directly access all classes in an automatic module.
C. Classes found in –classpath are part of an unnamed module.
D. Modular jars loaded from –classpath are automatic modules.
E. If a package is defined in both the named module and the unnamed module, then thepackage in the unnamed module is ignored.
Which is the correct order of possible statements in the structure of a Java class file?
A. class, package, import
B. package, import, class
C. import, package, class
D. package, class, import
E. import, class, package
Which two are successful examples of autoboxing? (Choose two.)
A. String a = “A”;
B. Integer e = 5;
C. Float g = Float.valueOf(null);
D. Double d = 4;
E. Long c = 23L;
F. Float f = 6.0;
Which three annotation uses are valid? (Choose three.)
A. Function func = (@NonNull x) > x.toUpperCase();
B. var v = “Hello” + (@Interned) “World”
C. Function<String, String> func = (var @NonNull x) > x.toUpperCase();
D. Function<String, String> func = (@NonNull var x) > x.toUpperCase();
E. var myString = (@NonNull String) str;
F. var obj = new @Interned MyObject();
Which interface in the java.util.function package will return a void return type?
A. Supplier
B. Predicate
C. Function
D. Consumer
Given the code fragment:var pool = Executors.newFixedThreadPool(5);Future outcome = pool.submit(() > 1);Which type of lambda expression is passed into submit()?
A. java.lang.Runnable
B. java.util.function.Predicate
C. java.util.function.Function
D. java.util.concurrent.Callable
Answer: D
Given:var fruits = List.of(“apple”, “orange”, “banana”, “lemon”);You want to examine the first element that contains the character n. Which statement willaccomplish this?
A. String result = fruits.stream().filter(f > f.contains(“n”)).findAny();
B. fruits.stream().filter(f > f.contains(“n”)).forEachOrdered(System.out::print);
C. Optional<String> result = fruits.stream().filter(f > f.contains (“n”)).findFirst ();
D. Optional<String> result = fruits.stream().anyMatch(f > f.contains(“n”));
Which statement about access modifiers is correct?
A. An instance variable can be declared with the static modifier.
B. A local variable can be declared with the final modifier.
C. An abstract method can be declared with the private modifier.
D. An inner class cannot be declared with the public modifier.
E. An interface can be declared with the protected modifier.
Which code is correct?
A. Runnable r = “Message” > System.out.println();
B. Runnable r = () > System.out::print;
C. Runnable r = () -> {System.out.println(“Message”);};
D. Runnable r = > System.out.println(“Message”);
E. Runnable r = {System.out.println(“Message”)};
Which two statements independently compile? (Choose two.)
A. List<? super Short> list = new ArrayList<Number>();
B. List<? super Number> list = new ArrayList<Integer>();
C. List<? extends Number> list = new ArrayList<Byte>();
D. List<? extends Number> list = new ArrayList<Object>();
E. List<? super Float> list = new ArrayList<Double>();
Which two statements set the default locale used for formatting numbers, currency, and percentages? (Choose two.)
A. Locale.setDefault(Locale.Category.FORMAT, “zh-CN”);
B. Locale.setDefault(Locale.Category.FORMAT, Locale.CANADA_FRENCH);
C. Locale.setDefault(Locale.SIMPLIFIED_CHINESE);
D. Locale.setDefault(“en_CA”);
E. Locale.setDefault(“es”, Locale.US);
Given the Person class with age and name along with getter and setter methods, and this code fragment:What will be the result?
A. Aman Tom Peter
B. Tom Aman Peter
C. Aman Peter Tom
D. Tom Peter Aman
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],[A, B]]
B. An exception is thrown at run time.
C. [[A, B], [A, B, C]]
D. [[A, B, C], [A, B, C]]
Which two commands are used to identify class and module dependencies? (Choose two.)
A. jmod describe
B. java Hello.java
C. jdeps --list-deps
D. jar --show-module-resolution
E. java --show-module-resolution
Given:public class X {}andpublic final class Y extends X {}What is the result of compiling these two classes?
A. The compilation fails because there is no zero args constructor defined in class X.
B. The compilation fails because either class X or class Y needs to implement the toString() method.
C. The compilation fails because a final class cannot extend another class.
D. The compilation succeeds.
Which interface in the java.util.function package can return a primitive type?
A. ToDoubleFunction
B. Supplier
C. BiFunction
D. LongConsumer
What makes Java dynamic?
A. At runtime, classes are loaded as needed, and new code modules can be loaded on
demand.
B. The runtime can process machine language sources as well as executables from
different language compilers.
C. The Java compiler uses reflection to test if class methods are supported by resources of
a target platform
D. The Java compiler preprocesses classes to run on specific target platforms.
