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Category Archives: 1z1-819

11 Sep, 2024 By admin

100% Real 1z1-819 dumps – Brilliant 1z1-819 Exam Questions PDF [Q52-Q71]

100% Real 1z1-819 dumps – Brilliant 1z1-819 Exam Questions PDF

1z1-819 Exam PDF [2024] Tests Free Updated Today with Correct 297 Questions

The Oracle 1z1-819 exam is designed for developers who have a strong foundation in Java programming and have experience in developing applications using Java SE 11. It covers various topics such as Java classes, interfaces, and objects, Java data types, Java arrays, exception handling, and Java I/O. It also includes topics on Java concurrency, JDBC, and security.

NO.52 Given:

What is the output?

1 2 [1, 2, 3, four] 3 four

1 2 [1, 2, 3, 4] 3 4

1 2 [1, 2, 3, 4] 3 four

1 2 [1, 2, 3, four] 3 4

NO.53 Given:

Which statement is equivalent to line 1?

double totalSalary = list.stream().map(e -> e.getSalary() * ratio).reduce (bo).ifPresent (p -> p.doubleValue());

double totalSalary = list.stream().mapToDouble(e -> e.getSalary() * ratio).sum;

double totalSalary = list.stream().map(Employee::getSalary * ratio).reduce (bo).orElse(0.0);

double totalSalary = list.stream().mapToDouble(e -> e.getSalary() * ratio).reduce(starts, bo);

NO.54 Given:
public class X {
}
and
public final class Y extends X {
}
What is the result of compiling these two classes?

The compilation fails because there is no zero args constructor defined in class X.

The compilation fails because either class X or class Y needs to implement the toString() method.

The compilation fails because a final class cannot extend another class.

The compilation succeeds.

NO.55 Give:

And the code fragment:

Which three code fragments, at line n1 prints SPRING?

System.out.printin (sA(1)};

System.out.printin(Season,values(1)};

System.out.printin(Season.SPRING);

System.out.printin (sa(0)}:

System.out.printin (Season.valueof(”SPRING”).ordinal() );

System.out.printin(Season.valueOf(”SPRING”). Ordinal() );

System.out.printin (Season.valueof (‘s’) );

NO.56 Given:

What is known about the Sportscar class?

The Sportscar class is a subclass of Automobile and inherits its methods.

The Sportscar subclass cannot override setTurbo method from the superclass Automobile.

The Sportscar class is a superclass that has more functionality than the Automobile class.

The Sportscar class inherits the setTurbo method from the superclass Automobile.

NO.57 Given the code fragment:

What is the result?
A)

B)

C)

D)

Option A

Option B

Option C

Option D

NO.58 Given:

Which two are secure serialization of these objects? (Choose two.)

Define the serialPersistentFields array field.

Declare fields transient.

Implement only readResolve to replace the instance with a serial proxy and not writeReplace.

Make the class abstract.

Implement only writeReplace to replace the instance with a serial proxy and not readResolve.

NO.59 Given:

Which three actions implement Java SE security guidelines? (Choose three.)

Change line 7 to return names.clone();.

Change line 4 to this.names = names.clone();.

Change the getNames() method name to get$Names().

Change line 6 to public synchronized String[] getNames() {.

Change line 2 to private final String[] names;.

Change line 3 to private Secret(String[] names) {.

Change line 2 to protected volatile String[] names;.

NO.60 Given:

What is the result?

2134

2143

214

234

NO.61 Given:

What is the output?

:APPLE:ORANGE:BANANA
appleorangebanana

:APPLE:ORANGE:BANANA

APPLE:apple ORANGE:orange BANANA:banana

appleorangebanana
:APPLE:ORANGE:BANANA

apple:APPLE orange:ORANGE banana:BANANA

NO.62 Given:

You want the code to produce this output:
John
Joe
Jane
Which code fragment should be inserted on line 1 and line 2 to produce the output?

Insert Comparator<Person> on line 1.
Insert
public int compare(Person p1, Person p2) {
return p1.name.compare(p2.name);
}
on line 2.

Insert Comparator<Person> on line 1.
Insert
public int compareTo(Person person) {
return person.name.compareTo(this.name);
}
on line 2.

Insert Comparable<Person> on line 1.
Insert
public int compare(Person p1, Person p2) {
return p1.name.compare(p2.name);
}
on line 2.

Insert Comparator<Person> on line 1.
Insert
public int compare(Person person) {
return person.name.compare(this.name);
}
on line 2.

NO.63 Given:

Which two are correct? (Choose two.)

Option A

Option B

Option C

Option D

NO.64 Given:

What is the result?

2134

2143

214

234

NO.65 Examine this excerpt from the declaration of the java.se module:

What does the transitive modifier mean?

Only a module that requires the java.se module is permitted to require the java.sql module.

Any module that requires the java.se module does not need to require the java.sql module.

Any module that attempts to require the java.se module actually requires the java.sql module instead.

Any module that requires the java.sql module does not need to require the java.se module.

NO.66 Given:
Automobile.java

Car.java

What must you do so that the code prints 4?

Remove the parameter from wheels method in line 3.

Add @Override annotation in line 2.

Replace the code in line 2 with Car ob = new Car();

Remove abstract keyword in line 1.

NO.67 Assume ds is a DataSource and the EMP table is defined appropriately.

What does executing this code fragment do?

inserts two rows (101, ‘SMITH’, ‘HR’) and (102, ‘JONES’, NULL)

inserts two rows (101, ‘SMITH’, ‘HR’) and (102, ‘JONES’, ‘HR’)

inserts one row (101, ‘SMITH’, ‘HR’)

throws a SQLException

NO.68 Given:

Which two codes, independently, can be inserted in line to 1 compile?

Abacus aba = (int m, int n) -> { m * n };

Abacus aba = (int e, int f) -> { return e * f; };

Abacus aba = (a, b) -> a * b;

Abacus aba = v, w -> x * y;

Abacus aba = (int i, j) -> ( return i * j; };

NO.69 Given:

and
checkQuality(QUALITY.A);
and

Which code fragment can be inserted into the switch statement to print Best?

QUALITY.A.ValueOf()

A.toString()

QUALITY.A

NO.70 Given:

Which two constructors will compile and set the class field strings? (Choose two.)

Option A

Option B

Option C

Option D

Option E

NO.71 Given:

executed with this command:
java Main one two three
What is the output of this class?

The compilation fails.

1) one2) two3) three

A java.lang.ArrayIndexOutOfBoundsException is thrown.

1) one

nothing

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4 Feb, 2023 By admin

Pass Oracle 1z1-819 Exam with Guarantee Updated 225 Questions [Q39-Q60]

Pass Oracle 1z1-819 Exam with Guarantee Updated 225 Questions

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