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Java SE 11 Developer

Last Update 19 hours ago Total Questions : 296

The Java SE 11 Developer content is now fully updated, with all current exam questions added 19 hours ago. Deciding to include 1z0-819 practice exam questions in your study plan goes far beyond basic test preparation.

You'll find that our 1z0-819 exam questions frequently feature detailed scenarios and practical problem-solving exercises that directly mirror industry challenges. Engaging with these 1z0-819 sample sets allows you to effectively manage your time and pace yourself, giving you the ability to finish any Java SE 11 Developer practice test comfortably within the allotted time.

Question # 71

Given:

What is the result?

A.

compilation error

B.

0 5

C.

6 13

D.

5 12

Question # 72

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().parallel().averagingDouble(a − > a);

B.

double avg = numbers.parallelStream().mapToInt (m − > m).average().getAsDouble ();

C.

double avg = numbers.stream().mapToInt (i − > i).average().parallel();

D.

double avg = numbers.stream().average().getAsDouble();

E.

double avg = numbers.stream().collect(Collectors.averagingDouble(n − > n));

Question # 73

Given the code fragment:

What change on line 1 will make this code compile?

A.

Add catch (L |N e).

B.

Add catch (L |M N e).

C.

Add catch (L e).

D.

Add catch (N | L | M e).

E.

Add catch (M |L e).

Question # 74

Which is the correct order of possible statements in the structure of a Java class file?

A.

class, package, import

B.

package, import, class

C.

import, package, class

D.

package, class, import

E.

import, class, package

Question # 75

Given:

Which action must you perform to print Verified?

A.

Make the verify method public and invoke it from the main method.

B.

Invoke the verify method from the place method.

C.

Change the declaration of the order variable to orderService order = New order(); and

Invoke the verify method from the main method.

D.

Invoke the verify method from the main method.

Question # 76

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.

Question # 77

Given:

When is the readObject method called?

A.

before this object is deserialized

B.

after this object is deserialized

C.

before this object Is serialized

D.

The method is never called.

E.

after this object is serialized

Question # 78

Given the code fragment:

You want to display the value of currency as $100.00 .

Which code inserted on line 1 will accomplish this?

A.

NumberFormat formatter = NumberFormat.getInstance(locale).getCurrency();

B.

NumberFormat formatter = NumberFormat.getCurrency(locale);

C.

NumberFormat formatter = NumberFormat.getInstance(locale);

D.

NumberFormat formatter = NumberFormat.getCurrencyInstance(locale);

Question # 79

Given:

What is the result?

A.

The compilation fails.

B.

1.99,2.99,0

C.

1.99,2.99,0.0

D.

1.99,2.99

Question # 80

Given:

Which code, when inserted at one or more marked positions, would allow classes B and C to compile?

A.

@Override // position 3void x () {} // position 3@Override // position 3public void z() { } // position 3

B.

@Override // position 2public void z() { } // position 3

C.

implements A // position 1@Override // position 2

D.

public void z() { } // position 3

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