Free Oracle 1Z0-829 Exam Questions

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Oracle 1Z0-829 Exam Questions
Provided By: Oracle
Exam: Java SE 17 Developer
Certification: Oracle Java

Total Questions: 660
Updated On: Sep 24, 2026
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Question 1
- Question ID: UK8296377
  Daylight saving time of 2018 in United States (US) ended at 4-Nov-2018 2:00 AM.
  What will be the result of compiling and executing below code?
  package com.examtest.ocp;
  
  import java.time.*;
  
  public class Test {
  public static void main(String [] args) {
  LocalDate date = LocalDate.of(2018, 11, 4);
  LocalTime time = LocalTime.of(13, 59, 59);
  ZonedDateTime dt = ZonedDateTime.of(date, time, ZoneId.of("America/New_York"));
  dt = dt.plusSeconds(1);
  System.out.println(dt.getHour() + ":" + dt.getMinute() + ":" + dt.getSecond());
  }
  }
  
  A : 12:0:0
  
  B :
  13:0:0
  
  C : 14:0:0
  
  Answer: C
Question 2
- 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
Question 3
- Given code of Test.java file:
  package com.examtest.ocp;
  
  public class Test {
  private static String print(String... args) {
  return String.join("-", args); //Line n1
  }
  
  private static Object print(Object... args) {
  String str = "";
  for(Object obj : args) {
  if(obj instanceof String) { //Line n2
  str += (String) obj; //Line n3
  }
  }
  return str; //Line n4
  }
  
  public static void main(String... args) {
  Object obj1 = new String("SPORT"); //Line n5
  Object obj2 = new String("MAD"); //Line n6
  System.out.println(print(obj1, obj2)); //Line n7
  }
  }
  What is the result?
  
  A : Line n1 causes compilation error
  
  B :
  Line n2 causes compilation error
  
  C : Line n3 causes compilation error
  
  D : Line n7 causes compilation error
  
  E :
  Code compiles successfully and on execution prints SPORTMAD on to the console
  
  F : Code compiles successfully and on execution prints SPORT-MAD on to the console
  
  G : An exception is thrown at runtime
  
  Answer: A
Question 4
- Question ID: UK8291153
  Given code of Test.java file:
  package com.examtest.ocp;
  
  import java.util.ArrayList;
  import java.util.List;
  
  class Person {
  private String name;
  private int age;
  
  Person(String name, int age) {
  this.name = name;
  this.age = age;
  }
  
  public String toString() {
  return "Person[" + name + ", " + age + "]";
  }
  
  public boolean equals(Person obj) {
  if(obj instanceof Person) {
  Person person = (Person)obj;
  if(this.name.equals(person.name) && this.age == person.age) {
  return true;
  }
  }
  return false;
  }
  }
  
  public class Test {
  public static void main(String[] args) {
  List<Person> persons = new ArrayList<>();
  persons.add(new Person("Liam", 25));
  persons.add(new Person("Liam", 27));
  persons.add(new Person("Liam", 25));
  persons.add(new Person("Liam", 25));
  
  persons.remove(new Person("Liam", 25));
  
  for(Person person : persons) {
  System.out.println(person);
  }
  }
  }
  What is the result?
  
  A :
  Person[Liam, 27]
  Person[Liam, 25]
  Person[Liam, 25]
  
  B :
  Person[Liam, 25]
  Person[Liam, 27]
  Person[Liam, 25]
  
  C : Person[Liam, 27]
  
  D :
  Person[Liam, 25]
  Person[Liam, 27]
  Person[Liam, 25]
  Person[Liam, 25]
  
  Answer: D
Question 5
- Question ID: UK8291577
  Given code of Test.java file:
  package com.examtest.ocp;
  
  public class Test {
  public static void main(String[] args) {
  for:
  for (int i = 2; i <= 100; i = i + 2) {
  for(int j = 1; j <= 10; j++) {
  System.out.print(i * j + "\t");
  }
  System.out.println();
  if(i == 10) {
  break for;
  }
  }
  }
  }
  What is the result?
  
  A : Total 5 non-blank rows will be there in the output
  
  B : Total 6 non-blank rows will be there in the output
  
  C :
  Total 50 non-blank rows will be there in the output
  
  D : Total 51 non-blank rows will be there in the output
  
  E :
  Total 100 non-blank rows will be there in the output
  
  F : Total 101 non-blank rows will be there in the output
  
  G : Compilation error
  
  Answer: A

PAGE: 1 - 132

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