A fully updated 2021 1z1-819 Exam Dumps exam guide from training expert ITExamSimulator
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NEW QUESTION 122
Given:
What is the result?
- A. The compilation fails.
- B. Orange Juice
- C. Orange Juice Apple Pie Lemmon Ice Raspberry Tart
- D. The program prints nothing.
Answer: C
Explanation:
NEW QUESTION 123
Given:
Path p1 = Paths.get("/scratch/exam/topsecret/answers");
Path p2 = Paths.get("/scratch/exam/answers/temp.txt");
Path p3 = Paths.get("/scratch/answers/topsecret");
Which two statements print ..\..\..\answers\topsecret? (Choose two.)
- A. System.out.print(p3.relativize(p2));
- B. System.out.print(p1.relativize(p2));
- C. System.out.print(p1.relativize(p3));
- D. System.out.print(p3.relativize(p1));
- E. System.out.print(p2.relativize(p1));
- F. System.out.print(p2.relativize(p3));
Answer: C,D
NEW QUESTION 124
Given:
public class X {
}
and
public final class Y extends X {
}
What is the result of compiling these two classes?
- A. The compilation succeeds.
- 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 fails because there is no zero args constructor defined in class X.
Answer: B
Explanation:
NEW QUESTION 125
Given:
What must be added in line 1 to compile this class?
- A. catch(FileNotFoundException | IndexOutOfBoundsException e) { }
- B. catch(FileNotFoundException e) { }catch(IndexOutOfBoundsException e) { }
- C. catch(IndexOutOfBoundsException e) { }catch(FileNotFoundException e) { }
- D. catch(FileNotFoundException | IOException e) { }
- E. catch(IOException e) { }
Answer: E
NEW QUESTION 126
var numbers = List.of(0,1,2,3,4,5,6,7,8,9);
You want to calculate the average of numbers. Which two codes will accomplish this? (Choose two.)
- A. double avg = numbers.stream().mapToInt (i -> i).average().parallel();
- B. double avg = numbers.stream().average().getAsDouble();
- C. double avg = numbers.stream().collect(Collectors.averagingDouble(n -> n));
- D. double avg = numbers.stream().parallel().averagingDouble(a -> a);
- E. double avg = numbers.parallelStream().mapToInt (m -> m).average().getAsDouble ();
Answer: B,E
Explanation:
NEW QUESTION 127
Given:
var data = new ArrayList<>();
data.add("Peter");
data.add(30);
data.add("Market Road");
data.set(1, 25);
data.remove(2);
data.set(3, 1000L);
System.out.print(data);
What is the output?
- A. [Market Road, 1000]
- B. [Peter, 30, Market Road]
- C. An exception is thrown at run time.
- D. [Peter, 25, null, 1000]
Answer: C
Explanation:
NEW QUESTION 128
Which two interfaces are considered to be functional interfaces? (Choose two.)
@FunctionalInterface
- A. interface InterfaceD {
int breed(int x);
}
@FunctionalInterface - B. int GERM = 13;
public default int getGERM() { return get(); }
private int get() { return GERM; }
public boolean equals(Object o);
int breed(int x);
} - C. interface InterfaceC {
public boolean equals(Object o);
int breed(int x);
int calculate(int x, int y);
}
@FunctionalInterface - D. int GERM = 13;
public default int getGERM() { return GERM; }
}
interface InterfaceB { - E. interface InterfaceE {
public boolean equals(int i);
int breed(int x);
}
interface InterfaceA {
Answer: C,E
Explanation:
Explanation/Reference:
NEW QUESTION 129
Which code fragment compiles?
- A. Option A
- B. Option D
- C. Option B
- D. Option C
Answer: B
Explanation:
NEW QUESTION 130
Given:
And the command:
java Main Helloworld
What is the result ?
- A. Input: Helloworld Echo: Helloworld
- B. Input:
Then block until any input comes from System.in. - C. A NullPointerException is thrown at run time.
- D. Input: Echo:
- E. Input:
Echo: Helloworld
Answer: B
Explanation:
NEW QUESTION 131
Given:
Which two statements are true if the method is added to Bar? (Choose two.)
- A. public <T> List<T> foo(Collection<T> arg) { ... } overrides Foo.foo.
- B. public <T> Collection<T> bar(Collection<T> arg) { ... } overloads Foo.foo.
- C. public <T> Collection<T> foo(Collection<T> arg) { ... } overloads Foo.foo.
- D. public <T> Iterable<T> foo(Collection<T> arg) { ... } overrides Foo.foo.
- E. public Collection<String> foo(Collection<String> arg) { ... } overrides Foo.foo.
- F. public <T> Collection<T> foo(Stream<T> arg) { ... } overloads Foo.foo.
Answer: A,D
NEW QUESTION 132
Given:
What is the result?
- A. abdf
- B. The compilation fails.
- C. abcd
- D. adf
- E. abd
Answer: C
NEW QUESTION 133
Given the content:
What Is the result?
A)
B)
C)
D)
E)
User Username
- A. Option A
- B. Option D
- C. Option B
- D. Option C
- E. Option
Answer: B,E
NEW QUESTION 134
Given the code fragment:
List<Integer> list = List.of(11,12,13,12,13);
Which statement causes a compile time error?
- A. double f = list.get(0);
- B. Integer b = list.get(0);
- C. Double e = Double.valueOf(list.get(0));
- D. Integer a = Integer.valueOf(list.get(0));
- E. Double d = list.get(0);
- F. int c =list.get(0);
Answer: D
NEW QUESTION 135
Analyze the code:
Which two options can you insert inside println method to produce Global:namescope? (Choose two.)
- A. Test.prefix+Test.getName()
- B. prefix+Test.name
- C. new Test().prefix+new Test().name
- D. prefix+name
- E. Test.prefix+Test.name
- F. Test.getName+prefix
Answer: A,C
NEW QUESTION 136
Given:
Which two method implementations are correct, when inserted independently in line 1? (Choose two.)
- A. Option A
- B. Option D
- C. Option B
- D. Option C
- E. Option E
Answer: A,E
NEW QUESTION 137
How many Thing objects are eligible for garbage collection in line 1?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: B
NEW QUESTION 138
Given:
What is the result?
- A. An exception is thrown at runtime.
- B. 0
- C. 1
- D. 2
Answer: B
Explanation:
NEW QUESTION 139
Given:
and the commands:
What is the result on execution of these commands?
Test.class - > java.sql -> java.base
- A.
- B. Test.class - > java.sql
java.sql -> java.base - C. Test.class - > java.sql
Test.class -> java.base - D. On execution, the jdepscommand displays an error.
Test.class -> java.base
Answer: C
NEW QUESTION 140
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. String toString() { return "200"; }
- D. public String toString() { return String.valueOf(v); }
Answer: D
Explanation:
NEW QUESTION 141
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