Online 1Z0-829 Practice Test

Question 1

Question ID: UK8297257

Given code of Test.java file:

package com.examtest.ocp;

public class Test {

public static void main(String[] args) {

int x = 2;

switch (x) {

default:

System.out.println("Still no idea what x is");

case 1:

System.out.println("x is equal to 1");

break;

case 2:

System.out.println("x is equal to 2");

break;

case 3:

System.out.println("x is equal to 3");

break;

}

What is the result?

Options :

A : x is equal to 2

B : Compilation error

C :

Still no idea what x is

x is equal to 1

D : Produces no output

Answer: A

Question 2

Question ID: UK8295913

Given code of Test.java file:

package com.examtest.ocp;

record Rectangle(double length, double width) {}

record Square(double side) extends Rectangle {}

public class Test {

public static void main(String[] args) {

Square sq = new Square(10.0);

System.out.println(sq);

}

What is the result?

Options :

A : Compilation error

B :

Square[side=10.0]

C : Square[Rectangle[length=10.0, width=10.0]]

D : Rectangle[length=10.0, width=10.0]

Answer: A

Question 3

Question ID: UK8295518

How many of the below code statements, written inside main method will compile successfully?

1. var arr1 = new int[]{10};

2. var arr2 = new String[][] {};

3. var arr3 = new char[][] {{}};

4. var arr4 = {10, 20, 30};

5. var arr5 = new String[][] {new String[]{"LOOK"}, new String[] {"UP"}};

6. var [] arr6 = new int[] {2, 3, 4};

Options :

A : None of the statements compile successfully

B : Only 1 statement compiles successfully

C :

2 statements compile successfully

D :

3 statements compile successfully

E : 4 statements compile successfully

F : 5 statements compile successfully

G : All 6 statements compile successfully

Answer: A

Question 4

Question ID: UK8297291

Consider below code snippet:

var x = Double.valueOf(Math.random() * 10).intValue();

System.out.println(x);

Which of the following statements is correct?

Options :

A :

Output is any int value between 1 and 10

B : Output is any int value between 1 and 9

C : Output is any int value between 0 and 10

D : Output is any int value between 0 and 9

Answer: D

Question 5

Given the content of the in. tart file:

23456789

and the code fragment:

What is the content of the out .txt file?

Options :

A : 01234567801234

B : 012345678

C : 0123456789234567

D : 0123456789

E : 012345678901234

F : 01234567

Answer: D

EXPERTY DESIGNED 1Z0-829 PRACTICE TEST