Exam Code: 1Z0-819 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: Java SE 11 Developer
Certification Provider: Oracle
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NEW QUESTION 1
Which three annotation uses are valid? (Choose three.)

  • A. Function<String, String> 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();

Answer: ACF

NEW QUESTION 2
Given:
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Which two allow a.Main to allocate a new Person? (Choose two.)

  • A. In Line 1, change the access modifier to privateprivate Person() {
  • B. In Line 1, change the access modifier to publicpublic Person() {
  • C. In Line 2, add extends Person to the Main classpublic class Main extends Person {and change Line 3 to create a new Main objectPerson person = new Main();
  • D. In Line 2, change the access modifier to protectedprotected class Main {
  • E. In Line 1, remove the access modifierPerson() {

Answer: BC

NEW QUESTION 3
Given:
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What is the result?

  • A. watermelonorangelemongrapeapricotapple
  • B. nothing
  • C. appleapricotgrapelemonorangewatermelon
  • D. appleorangegrapelemonapricotwatermelon

Answer: A

Explanation:
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NEW QUESTION 4
Given:
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Which two constructors will compile and set the class field strings? (Choose two.)
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  • A. Option A
  • B. Option B
  • C. Option C
  • D. Option D
  • E. Option E

Answer: CE

NEW QUESTION 5
Given:
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Which is true?

  • A. System.out is the standard output strea
  • B. The stream is open only when System.out is called.
  • C. System.in cannot reassign the other stream.
  • D. System.out is an instance of java.io.OutputStream by default.
  • E. System.in is the standard input strea
  • F. The stream is already open.

Answer: D

NEW QUESTION 6
Given:
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Which three classes successfully override printOne()? (Choose three.)
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  • A. Option A
  • B. Option B
  • C. Option C
  • D. Option D
  • E. Option E
  • F. Option F

Answer: ACD

NEW QUESTION 7
Given:
jdeps -jdkinternals C:\workspace4\SimpleSecurity\jar\classes.jar
Which describes the expected output?

  • A. jdeps lists the module dependencies and the package names of all referenced JDK internal API
  • B. 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 and prints all class-level dependencies.
  • E. The -jdkinternals option analyzes all classes in the .jar for class-level dependencies on JDK internal API
  • F. If any are found, the results with suggested replacements are output in the console.

Answer: A

Explanation:
-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.

NEW QUESTION 8
Given:
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What is the result?

  • A. 42
  • B. The compilation fails due to an error in line 4.
  • C. 17
  • D. The compilation fails due to an error in line 3.
  • E. The compilation fails due to an error in line 2.
  • F. The compilation fails due to an error in line 1.
  • G. The compilation fails due to an error in line 5.

Answer: A

NEW QUESTION 9
Given:
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What is the result?

  • A. is it 1
  • B. An IndexOutOfBoundsException is thrown at runtime.
  • C. is it 0
  • D. this is it 2
  • E. this is it 3

Answer: D

Explanation:
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NEW QUESTION 10
Given:
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executed using this command: java Myclass My Car is red What is the output of this class?

  • A. Car--red--My
  • B. My--Car--is
  • C. My--is--java
  • D. java--Myclass--My
  • E. Myclass--Car--red

Answer: A

NEW QUESTION 11
Which two statements are correct about try blocks? (Choose two.)

  • A. A try block can have more than one catch block.
  • B. A finally block in a try-with-resources statement executes before the resources declared are closed.
  • C. A finally block must be immediately placed after the try or catch blocks.
  • D. A try block must have a catch block and a finally block.
  • E. catch blocks must be ordered from generic to specific exception types.

Answer: AC

NEW QUESTION 12
Given:
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Which two statements are true if the method is added to Bar? (Choose two.)

  • A. public Collection<String> foo(Collection<String> arg) { ... } overrides Foo.foo.
  • B. public <T> Collection<T> foo(Stream<T> arg) { ... } overloads Foo.foo.
  • C. public <T> List<T> foo(Collection<T> arg) { ... } overrides Foo.foo.
  • D. public <T> Collection<T> foo(Collection<T> arg) { ... } overloads Foo.foo.
  • E. public <T> Collection<T> bar(Collection<T> arg) { ... } overloads Foo.foo.
  • F. public <T> Iterable<T> foo(Collection<T> arg) { ... } overrides Foo.foo.

Answer: CF

NEW QUESTION 13
Given:
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What is the result?

  • A. [0,0] = Red[0,1] = White[1,0] = Black[1,1] = Blue[2,0] = Yellow[2,1] = Green[3,0] = Violet
  • B. [0,0] = Red[1,0] = Black[2,0] = Blue
  • C. java.lang.ArrayIndexOutOfBoundsException thrown
  • D. [0,0] = Red[0,1] = White[1,0] = Black[2,0] = Blue[2,1] = Yellow[2,2] = Green[2,3] = Violet

Answer: D

Explanation:
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NEW QUESTION 14
Examine these module declarations:
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Which two statements are correct? (Choose two.)

  • A. The ServiceProvider module is the only module that, at run time, can provide the com.example.api API.
  • B. The placement of the com.example.api API in a separate module, ServiceAPI, makes it easy to install multiple provider modules.
  • C. The Consumer module should require the ServiceProvider module.
  • D. The ServiceProvider module should export the com.myimpl package.
  • E. The ServiceProvider module does not know the identity of a module (such as Consumer) that uses the com.example.api API.

Answer: AC

NEW QUESTION 15
Given:
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Which two lines cause compilation errors? (Choose two.)

  • A. line 12
  • B. line 6
  • C. line 9
  • D. line 8
  • E. line 7

Answer: BE

NEW QUESTION 16
Given the code fragment:
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What is the result?

  • A. 23
  • B. 12
  • C. 123
  • D. 13

Answer: A

Explanation:
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NEW QUESTION 17
Given:
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What is the result?

  • A. JoeMarry
  • B. Joenull
  • C. nullnull
  • D. nullMary

Answer: D

Explanation:
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NEW QUESTION 18
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