Free Practice Oracle 1Z0-829 Exam Questions 2025

Stay ahead with 100% Free Java SE 17 Developer 1Z0-829 Dumps Practice Questions

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Total 660 Questions | Updated On: Mar 27, 2025

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Question 1

Question ID: UK8292097

Below is the code of Test.java file:

package com.examtest.ocp;

import java.util.*;

public class Test {

public static void main(String[] args) {

var list = new ArrayList<>(); //Line n1

list.add("TAKE");

list.add("THE");

list.add("RISK");

System.out.println(String.join(".", list)); //Line n2

}

What is the result?

A : Compilation error at Line n1

B : Compilation error at Line n2

C : An exception is thrown at runtime

D : TAKE.THE.RISK.

E : TAKE.THE.RISK

F : TAKETHERISK

G : TAKETHERISK.

Answer: B

Question 2

Question ID: UK8293374

Which of the following are Java Exception classes?

Choose 3 options.

A : ClassCastException

B : NullException

C : NumberFormatException

D : IllegalArgumentException

E : ArrayIndexException

Answer: A,C,D

Question 3

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 4

Question ID: UK8291961

Consider below statements:

1. int x = 5____0;

2. int y = ____50;

3. int z = 50____;

4. float f = 123.76_86f;

5. double d = 1_2_3_4;

How many statements are legal?

A : One statement only

B : Two statements only

C : Three statements only

D : Four statements only

E : All 5 statements

Answer: C

Question 5

Question ID: UK8298194

Given code of Test.java file:

package com.examtest.ocp;

public class Test {

public static void main(String[] args) {

short [] args = new short[]{50, 50};

args[0] = 5;

args[1] = 10;

System.out.println("[" + args[0] + ", " + args[1] + "]");

}

What is the result?

A : Compilation error

B : An exception is thrown at runtime

C : [50, 50]

D : [5, 10]

Answer: A

Page: 1 / 132

Total 660 Questions | Updated On: Mar 27, 2025

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