1z0-808 Practice Exam Tests Latest Updated on Jan-2024 [Q40-Q63]

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1z0-808 Practice Exam Tests Latest Updated on Jan-2024

Pass 1z0-808 Exam in First Attempt Guaranteed Dumps!

Oracle 1z0-808 exam consists of 70 multiple-choice questions that need to be completed within two hours. Candidates need to score at least 65% to pass the exam and earn the Java SE 8 Programmer I certification. Java SE 8 Programmer I certification is recognized globally and is highly valued by employers as it indicates that the certified individual has a strong foundation in Java programming and can contribute to the development of Java applications.

Passing the Oracle 1z1-808 certification exam demands a good understanding of the Java programming language. Candidates must have a strong foundation in the fundamentals of Java programming, as well as experience with developing Java applications. 1z0-808 exam tests your knowledge of Java syntax and semantics, object-oriented programming, and the use of common Java APIs.

Q40. Given the code fragment:

What is the result?
A:

B: Compilation fails only at line n1.
C: Compilation fails only at line n2.
D: Compilation fails only at line n3.
E: Compilation fails at both line n2 and line n3.

Option A

Option B

Option C

Option D

Option E

Q41. Consider
Integer number = Integer.valueOff 808.1″);
Which is true about the above statement?

The value of the variable number will be 808.1

The value of the variable number will be 808

The value of the variable number will be 0.

A NumberFormatException will be throw.

It will not compile.

The Integer class value of 0 returns an Integer from given string. But we need to pass string which has correct format for integer otherwise it will throw a NumberFormatException. In this case we have passed string which is not an integer value (since what we passed is fractional number), so option D is correct.

Q42. Given the code fragment:

Which three code fragments are valid at line n1?

Option A

Option B

Option C

Option D

Option E

Q43. Given:

What code should be inserted?

Option A

Option B

Option C

Option D

Option E

Option F

Dog should be an abstract class. The correct syntax for this is: abstract class Dog { Poodle should extend Dog (not implement).

Q44. Given the code fragment:

Which code snippet at line 9 prints true?

Option A

Option B

Option C

Option D

Q45. Given the code fragment:

What is the result?

Element 0Element 1

Null element 0Null element 1

NullNull

A NullPointerException is thrown at runtime.

Q46. Given the code fragment: Which modification enables the code fragment to print TrueDone?

Replace line 5 With String result = “true”; Replace line 7 with case “true”:

Replace line 5 with boolean opt = l; Replace line 7 with case 1=

At line 9, remove the break statement.

Remove the default section.

Q47. You are asked to create a method that accepts an array of integers and returns the highest value from that array.
Given the code fragment:

Which method signature do you use at line n1?

public int findMax (int [] numbers)

static int[] findMax (int max)

static int findMax (int [] numbers)

final int findMax (int [] )

Q48. Given the code fragment:

Which code fragment, when inserted at line 9, enables the code to print true?

String str2 = str1;

String str2 = new String (str1);

String str2 = sb1. toString ();

String str2 = “Duke”;

Q49. Given:

What is the result?

Option A

Option B

Option C

Option D

Q50. Given the code fragment:

What is the result?
A B C Work done

A B C D Work done

A Work done

Compilation fails

Explanation
Explanation:

Q51. Given the code fragment from three files:

Which code fragment, when inserted at line 2, enables the code to compile?

Option A

Option B

Option C

Option D

Option E

Q52. Given:

What is the result?

Compilation fails

An exception is thrown at runtime

There is no result because this is not correct way to determine the hash code

Hash is: 111111, 44444444, 999999999

The compilation fails as SampleClassA and SampleClassB cannot override SampleClass because the return type of SampleClass is int, while the return type of SampleClassA and SampleClassB is long.
Note: If all three classes had the same return type the output would be: Hash is : 111111, 44444444, 999999999

Q53. Given:

What is the result?

Option A

Option B

Option C

Option D

Q54. You are asked to develop a program for a shopping application, and you are given the following information:
The application must contain the classes Toy, EduToy, and ConsToy. The Toy class is the superclass

of the other two classes.
The int calculatePrice (Toy t) method calculates the price of a toy.

The void printToy (Toy t) method prints the details of a toy.

Which definition of the Toy class adds a valid layer of abstraction to the class hierarchy?

Option A

Option B

Option C

Option D

Q55. Given: What is the result?

null

compilation fails

Java.lang.NullPointerException

An array variable (here xx) can very well have the null value.
Note:
Null is the reserved constant used in Java to represent a void reference i.e a pointer to
nothing. Internally it is just a binary 0, but in the high level Java language, it is a magic
constant, quite distinct from zero, that internally could have any representation.

Q56. Given the following array:

Which two code fragments, independently, print each element in this array? (Choose two.)

Option A

Option B

Option C

Option D

Option E

Option F

Q57. Given:
Acc.java:

Which statement is true?

Both p and s are accessible by obj.

Only s is accessible by obj.

Both r and s are accessible by obj.

p, r, and s are accessible by obj.

Q58. Given these two classes:

Any amount of electricity used by a customer (represented by an instance of the Customer class) must contribute to the customer’s bill (represented by the member variable bill) through the useElectricity method.
An instance of the Customer class should never be able to tamper with or decrease the value of the member variable bill.
How should you write methods in the ElectricAccount class at line n1 so that the member variable bill is always equal to the value of the member variable kwh multiplied by the member variable rate?