Practice 1Z0-829 Exam Online

Question 1

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?

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 2

Question ID: UK8295506

Given code of Test.java file:

package com.examtest.ocp;

public class Test {

public static void main(String[] args) {

String[] arr = { "L", "I", "V", "E" }; //Line n1

int i = -2;

if (i++ == -1) { //Line n2

arr[-(--i)] = "F"; //Line n3

} else if (--i == -2) { //Line n4

arr[-++i] = "O"; //Line n5

}

System.out.println(String.join("", arr)); //Line n6

}

What is the result?

A : Compilation error

B : An exception is thrown at runtime

C : LIVE

D :

LIFE

E : LIVO

F : LOVE

G : LIOE

Answer: A

Question 3

Question ID: UK8293780

Given code of Test.java file:

package com.examtest.ocp;

interface Blogger {

default void blog() throws Exception {

System.out.println("GENERIC");

}

class TravelBlogger implements Blogger {

public void blog() {

System.out.println("TRAVEL");

}

public class Test {

public static void main(String[] args) {

Blogger blogger = new TravelBlogger(); //Line n1

((TravelBlogger)blogger).blog(); //Line n2

}

What is the result?

A : Compilation error in TravelBlogger class

B :

Compilation error in Test class

C :

GENERIC is printed on to the console and program terminates successfully

D : TRAVEL is printed on to the console and program terminates successfully

E : An exception is thrown at runtime

Answer: D

Question 4

Question ID: UK8297789

Given code of Test.java file:

package com.examtest.ocp;

import java.util.ArrayList;

import java.util.List;

public class Test {

public static void main(String[] args) {

Boolean [] arr = new Boolean[2];

List<Boolean> list = new ArrayList<>();

list.add(arr[0]);

list.add(arr[1]);

if(list.remove(0)) {

list.remove(1);

}

System.out.println(list);

}

What is the result?

A : Compilation error

B : ArrayIndexOutOfBoundsException is thrown at runtime

C :

NullPointerException is thrown at runtime

D : [true]

E : [false]

F : []

Answer: C

Question 5

Given the course table:

Given the code fragment:

A : 2

B : false

C : true

D : 1

Answer: C

Name:	Java SE 17 Developer
Exam Code:	1Z0-829
Certification:	Oracle Java
Vendor:	Oracle
Total Questions:	660
Last Updated:	Apr 22, 2024

Oracle 1Z0-829