All About High Value 1Z0-819 Questions Pool

NEW QUESTION 1
Analyze the code:

Which two options can you insert inside println method to produce Global:namescope? (Choose two.)

• A. Test.prefix+Test.name
• B. new Test().prefix+new Test().name
• C. Test.prefix+Test.getName()
• D. Test.getName+prefix
• E. prefix+Test.name
• F. prefix+name

Answer: BC

NEW QUESTION 2
Given:

Which is true about line 1?

• A. If the value is not present, a NoSuchElementException is thrown at run time.
• B. It always executes the System.out::print statement.
• C. If the value is not present, a NullPointerException is thrown at run time.
• D. If the value is not present, nothing is done.

Answer: D

Explanation:

NEW QUESTION 3
Given:

What is the result?

• A. The compilation fails.
• B. abdf
• C. abd
• D. adf
• E. abcd

Answer: E

NEW QUESTION 4
Given:

Which is true?

• A. The code compiles but does not print any result.
• B. The code prints 25.
• C. The code does not compile.
• D. The code throws an exception at runtime.

Answer: C

NEW QUESTION 5
Given this enum declaration:

Examine this code: System.out.println(Letter.values()[1]);
What code should be written at line 5 for this code to print 200?

• A. public String toString() { return String.valueOf(ALPHA.v); }
• B. public String toString() { return String.valueOf(Letter.values()[1]); }
• C. public String toString() { return String.valueOf(v); }
• D. String toString() { return “200”; }

Answer: C

Explanation:

NEW QUESTION 6
Given:

Which two methods facilitate valid ways to read instance fields? (Choose two.)

• A. getTCount
• B. getACount
• C. getTotalCount
• D. getCCount
• E. getGCount

Answer: CD

NEW QUESTION 7
Given:

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 8
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

Answer: B

NEW QUESTION 9
Given:

What is the result?

• A. Orange Juice
• B. The compilation fails.
• C. Orange Juice Apple Pie Lemmon Ice Raspberry Tart
• D. The program prints nothing.

Answer: C

Explanation:

NEW QUESTION 10
Given:

and

What is the result?

• A. A NullPointerException is thrown at run time.
• B. The compilation fails.
• C. 1Null null
• D. 111
• E. A ClassCastException is thrown at run time.

Answer: B

Explanation:

NEW QUESTION 11
Assuming the Widget class has a getPrice method, this code does not compile:

Which two statements, independently, would allow this code to compile? (Choose two.)

• A. Replace line 5 with widgetStream.filter(a > ((Widget)a).getPrice() > 20.00).
• B. Replace line 1 with List<Widget> widgetStream = widgets.stream();.
• C. Replace line 5 with widgetStream.filter((Widget a) > a.getPrice() > 20.00).
• D. Replace line 4 with Stream<Widget> widgetStream = widgets.stream();.

Answer: AD

NEW QUESTION 12
Given:

What is the output?

• A. null
• B. A NoSuchElementException is thrown at run time.
• C. Duke
• D. A NullPointerException is thrown at run time.

Answer: C

Explanation:

NEW QUESTION 13
Given:

Which expression when added at line 1 will produce the output of 1.17?

• A. float z = (float)(Math.round((float)x/y*100)/100);
• B. float z = Math.round((int)(x/y),2);
• C. float z = Math.round((float)x/y,2);
• D. float z = Math.round((float)x/y*100)/(float)100;

Answer: D

Explanation:

NEW QUESTION 14
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

NEW QUESTION 15
Given the contents:
MessageBundle.properties file: message=Hello MessageBundle_en.properties file: message=Hello (en) MessageBundle_US.properties file: message=Hello (US) MessageBundle_en_US.properties file: message=Hello (en_US) MessageBundle_fr_FR.properties file: message=Bonjour
and the code fragment: Locale.setDefault(Locale.FRANCE);
Locale currentLocale = new Locale.Builder().setLanguage(“en”).build();
ResourceBundle messages = ResourceBundle.getBundle(“MessageBundle”, currentLocale); System.out. println(messages.getString(“message”));
Which file will display the content on executing the code fragment?

• A. MessageBundle_en_US.properties
• B. MessageBundle_en.properties
• C. MessageBundle_fr_FR.properties
• D. MessageBundle_US.properties
• E. MessageBundle.properties

Answer: C

NEW QUESTION 16
Given:

Which two lines of code when inserted in line 1 correctly modifies instance variables? (Choose two.)

• A. setCCount(c) = cCount;
• B. tCount = tCount;
• C. setGCount(g);
• D. cCount = setCCount(c);
• E. aCount = a;

Answer: BE

NEW QUESTION 17
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