Free Oracle 1Z0-829 Exam Questions

Become Oracle Certified with updated 1Z0-829 exam questions and correct answers

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Total 660 Questions | Updated On: Jan 13, 2026

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Question 1

Skipped

Question ID: UK8295920

Given code of Test.java file:

package com.examtest.ocp;

public class Test {

public static void main(String[] args) {

int x = 4;

switch (x) {

default -> System.out.println("Unknown");

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

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

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

}

What is the result?

A : Compilation error

B : Unknown

C : Unknownx is equal to 1x is equal to 2x is equal to 3

D : Program compiles and executes successfully but produces no output

Answer: B

Question 2

Question ID: UK8291549

Given code of Test.java file:

package com.examtest.ocp;

public class Test {

private static void m(int i) {

System.out.print(1);

}

private static void m(int i1, int i2) {

System.out.print(2);

}

private static void m(char... args) {

System.out.print(3);

}

public static void main(String... args) {

m('A');

m('A', 'B');

m('A', 'B', 'C');

m('A', 'B', 'C', 'D');

}

What is the result?

A : Above code causes compilation error

B : It compiles successfully and on execution prints 3333 on to the console

C : It compiles successfully and on execution prints 1233 on to the console

D : It compiles successfully and on execution prints 1333 on to the console

Answer: C

Question 3

Question ID: UK8295509

Given code of Test.java file:

package com.examtest.ocp;

public class Test {

public static void main(String[] args) {

String arr1 [], arr2, arr3 = null; //Line n1

arr1 = new String[2];

arr1[0] = "A";

arr1[1] = "B";

arr2 = arr3 = arr1; //Line n2

System.out.println(String.join("-", arr2)); //Line n3

}

What is the result?

A : Line n1 causes compilation error

B : Line n2 causes compilation error

C : Line n3 causes compilation error

D : It executes successfully and prints A-B on to the console

E : It executes successfully and prints B-A on to the console

F : It executes successfully and prints A on to the console

G : It executes successfully and prints B on to the console

Answer: B

Question 4

Question ID: UK8291982

Consider below code of Test.java file:

package com.examtest.ocp;

import java.time.LocalDate;

class MyLocalDate extends LocalDate {

@Override

public String toString() {

return super.getDayOfMonth() + "-" + super.getMonthValue() + "-" + super.getYear();

}

public class Test {

public static void main(String [] args) {

MyLocalDate date = LocalDate.parse("1980-03-16");

System.out.println(date);

}

What is the result?

A : 1980-03-16

B : 16-03-1980

C : 16-3-1980

D : An exception is thrown at runtime

E : Compilation error

Answer: A

Question 5

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};

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

Page: 1 / 132

Total 660 Questions | Updated On: Jan 13, 2026

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