Lead4Pass 1Z0-819 Exam Dumps Real 1Z0-819 Exam Study Guide – Jan 2023
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[Newest Version] Free 1Z0-819 Exam Dumps and Exam Questions Study Guide
Question 1:
Given:
and omitting the throws FooException clause results in a compilation error. Which statement is true about FooException?
A. FooException is a subclass of RuntimeError.
B. FooException is unchecked.
C. The body of foo can only throw FooException.
D. The body of foo can throw FooException or one of its subclasses.
Correct Answer: D
Reference: https://stackoverflow.com/questions/47871728/throwing-a-parent-class- exception-force-to-throw-its-subclass-exception-event-t
Question 2:
Given the code fragment:
You want to display the value of the currency as $100.00. Which code inserted on line 1 will accomplish this?
A. NumberFormat formatter = NumberFormat.getInstance(locale).getCurrency();
B. NumberFormat formatter = NumberFormat.get currency(locale);
C. NumberFormat formatter = NumberFormat.getInstance(locale);
D. NumberFormat formatter = NumberFormat.getCurrencyInstance(locale);
Correct Answer: A
Reference: https://zetcode.com/java/numberformat/
Question 3:
Given:
What is the result?
A. WorkingUnknown
B. Unknown
C. TuesdayUnknown
D. The compilation fails.
E. Tuesday
F. Working
Correct Answer: B
Question 4:
Given:
Which two method implementations are correct when inserted independently in line 1? (Choose two.)
A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
Correct Answer: AE
Question 5:
Given:
executed with this command: java Main one two three What is the result?
A. 0). one
B. 0). one1). two2). three
C. The compilation fails.
D. It creates an infinite loop printing:0). one1). two1). two…
E. A java. lang.NullPointerException is thrown.
Correct Answer: D
Question 6:
Given the Customer table structure:
1.ID Number Primary Key
2.NAME Text Nullable Given code fragment:
Which statement inserted on line 14 sets the NAME column to a NULL value?
A. Stmt.setNull(2, java,sql. Types, VARCHAR);
B. Stmt.setNull(2 string, class);
C. Stmt.setNull(2, null);
D. Stmt.setNull(2, java.lang, string);
Correct Answer: A
Question 7:
Given: What is the result?
A. 3 5 3 3
B. 3 3 3 3
C. 3 5 3 5
D. 5 5 3 3
Correct Answer: A
Question 8:
Why does this compilation fail?
A. The method Y. print (object) does not call the method super.print (object)
B. The method x. print (object) is not accessible to Y.
C. In method x. print (Collection), system. Out:: prints is an invalid Java identifier.
D. The method print (object) and the method print (object…) are duplicates of each other.
E. The method Y. print (object…) cannot override the final method x.print (object….).
Correct Answer: D
Question 9:
Given the code fragment:
What is the result?
A. 1
B. The compilation fails at line
C. 10
D. The compilation fails at line 16.
E. The compilation fails at line 13.
Correct Answer: C
Question 10:
Given:
What is the type of x?
A. char
B. List
C. String
D. List
Correct Answer: C
Question 11:
Given the code fragment:
What is the result?
A. An ArrayIndexOutofBoundsException is thrown at runtime.
B. The compilation fails.
C. gh ij kl
D. gj hk il
E. ghi jkl
Correct Answer: A
Question 12:
Given: What is the result?
A. NullPointerException is thrown at line 4.
B. NullPointerException is thrown at line 10.
C. A compilation error occurs.
D. Hello
Correct Answer: D
Question 13:
Given:
What is the result?
A. watermelonorangelemongrapeapricotapple
B. nothing
C. appleapricotgrapelemonorangewatermelon
D. appleorangegrapelemonapricotwatermelon
Correct Answer: A
Question 14:
Given:
What is the result?
A. null
B. nothing
C. It fails to compile.
D. java. lang.IllegalAccessException is thrown.
E. Student
Correct Answer: C
Question 15:
Given:
Which two codes, independently, can be inserted in line to 1 compile?
A. Abacus aba = (int m, int n) -> { m * n };
B. Abacus aba = (int e, int f) -> { return e * f; };
C. Abacus aba = (a, b) -> a * b;
D. Abacus aba = v, w -> x * y;
E. Abacus aba = (int i, j) -> ( return i * j; };
Correct Answer: CE
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