Oracle Certified Professional Java Se 8 Programmer Exam Questions & Answers

All 54 questions

1. Q1 Given structure of LOG table: LOG (ID integer, MESSAGE varchar(1000), PRIMARY KEY (ID)) Given code of Test.java file: package com.udayan.ocp; import java.sql.*;import java.util.Properties; public class Test {…
2. Q2 Given structure of EMPLOYEE table: EMPLOYEE (ID integer, FIRSTNAME varchar(100), LASTNAME varchar(100), SALARY real, PRIMARY KEY (ID)) EMPLOYEE table contains below records: 101 John Smith…
3. Q3 Given code of Test.java file: package com.udayan.ocp; import java.util.Arrays;import java.util.Collections;import java.util.List; public class Test { public static void main(String[] args) { List<String> list = Arrays.asList("M",…
4. Q4 Given code of Test.java file:  package com.udayan.ocp; import java.io.*;import java.nio.file.Path;import java.nio.file.Paths; public class Test { public static void main(String[] args) throws IOException { Path…
5. Q5 Consider below code of Child.java file: package com.udayan.ocp; class Parent { public void m() { System.out.println("Parent"); }} public abstract class Child extends Parent { //Line…
6. Q6 Below is the code of Test.java file: package com.udayan.ocp; public class Test { public static void main(String [] args) { System.out.println(new Object() {…
7. Q7 Given code of Test.java file: package com.udayan.ocp; import java.util.stream.Stream; public class Test { public static void main(String[] args) { Stream<Double> stream = Stream.generate(() -> new…
8. Q8 Consider the code of Test.java file:package com.udayan.ocp; class Player { String name; int age;  Player() { this.name = "Sachin"; this.age = 44; } …
9. Q9 Given code of Test.java file:package com.udayan.ocp; public class Test { private static final <X extends Integer, Y extends Integer> void add(X x, Y…
10. Q10 Given structure of EMPLOYEE table: EMPLOYEE (ID integer, FIRSTNAME varchar(100), LASTNAME varchar(100), SALARY real, PRIMARY KEY (ID)) EMPLOYEE table contains below records: 101 John Smith…
11. Q11 Imagine below path exists: F:.└───A └───B     Given code of Test.java file:  package com.udayan.ocp; import java.io.*; public class Test { public static void main(String[]…
12. Q12 Given code:package com.udayan.ocp; enum TrafficLight { RED, YELLOW, GREEN;} public class Test { public static void main(String[] args) { TrafficLight tl1 = TrafficLight.GREEN; TrafficLight…
13. Q13 Given code of Test.java file:  package com.udayan.ocp; import java.io.*; public class Test { public static void main(String[] args) { try(BufferedWriter bw = new BufferedWriter(new…
14. Q14 Given code of Test.java file: package com.udayan.ocp; public class Test<T> { private T t;  public T get() { return t; }  public void set(T…
15. Q15 Given code of Test.java file:package com.udayan.ocp; import java.util.function.Supplier; public class Test { public static void main(String[] args) { Supplier<StringBuilder> supplier = () -> new…
16. Q16 Consider the code of Test.java file: package com.udayan.ocp; class Point { private int x; private int y;  Point(){ Point(10, 20); }  Point(int x,…
17. Q17 Given code of Test.java file: package com.udayan.ocp; import java.util.Optional; public class Test { public static void main(String[] args) { Optional<Integer> optional = Optional.of(null); //Line 8…
18. Q18 What will be the result of compiling and executing Test class?package com.udayan.ocp; import java.util.ArrayList;import java.util.Collections;import java.util.Comparator;import java.util.List; class Point { private int x; private…
19. Q19 Given code of Test.java file:  package com.udayan.ocp; import java.util.Arrays;import java.util.List;import java.util.function.Predicate; public class Test { public static void main(String[] args) { List<Integer> list =…
20. Q20 Given code of Test.java file:  package com.udayan.ocp; import java.util.List;import java.util.Map;import java.util.stream.Collectors;import java.util.stream.Stream; class Certification { String studId; String test; int marks;  Certification(String studId, String…
21. Q21 Given code of Test.java file:package com.udayan.ocp; import java.util.*; class Employee { private String name; private double salary;  public Employee(String name, double salary) { this.name…
22. Q22 Given code of Test.java file: package com.udayan.ocp; import java.util.ArrayList;import java.util.List; public class Test { public static void main(String[] args) { int ref = 10; List<Integer>…
23. Q23 Given code:  package com.udayan.ocp; class Outer { private String name = "James Gosling"; //Insert inner class definition here} public class Test { public static…
24. Q24 Given code of Test.java file:  package com.udayan.ocp; import java.util.stream.IntStream; public class Test { public static void main(String[] args) { int sum = IntStream.rangeClosed(1,3).map(i ->…
25. Q25 Consider the code of Test.java file: package com.udayan.ocp; enum Flags { TRUE, FALSE;  Flags() { System.out.println("HELLO"); }} public class Test { public static void…
26. Q26 F: is accessible for reading/writing and below is the directory structure for F:F:.└───A └───B Book.javaBook.java is a text file.       …
27. Q27 Given code of Test.java file:  package com.udayan.ocp; import java.util.stream.Stream; public class Test { public static void main(String[] args) { Stream<Integer> stream = Stream.iterate(1, i…
28. Q28 Given code of Test.java file:  package com.udayan.ocp; import java.util.OptionalDouble; class MyException extends RuntimeException{} public class Test { public static void main(String[] args) { OptionalDouble optional…
29. Q29 Given code of Test.java file:  package com.udayan.ocp; import java.nio.file.Path;import java.nio.file.Paths; public class Test { public static void main(String[] args) { Path path1 = Paths.get("F:\\A\\B\\C");…
30. Q30 Below is the code to Test.java file: package com.udayan.ocp; enum ShapeType { CIRCLE, SQUARE, RECTANGLE;} abstract class Shape { private ShapeType type = ShapeType.SQUARE;…
31. Q31 Given code of Test.java file: package com.udayan.ocp; import java.util.Arrays;import java.util.Comparator;import java.util.List; class Student implements Comparator<Student> { private String name; private String exam;  public Student() {…
32. Q32 Given code of Test.java file: package com.udayan.ocp; import java.util.ArrayList;import java.util.List; public class Test { public static void main(String[] args) { int ref = 10; List<Integer>…
33. Q33 Given code of Test.java file:  package com.udayan.ocp; import java.util.*; public class Test { public static void main(String[] args) { NavigableMap<Integer, String> map = new…
34. Q34 Performance with parallel stream is always better than sequential streams.
35. Q35 Which of the following code will create/return a Locale object for the JVM, on which your code is running?
36. Q36 Given: package com.udayan.ocp; import java.util.function.Supplier; class Document { void printAuthor() { System.out.println("Document-Author"); }} class RFP extends Document { @Override void printAuthor() { System.out.println("RFP-Author"); }} public class…
37. Q37 Given code: package com.udayan.ocp; public class Test { class A { void m() { System.out.println("INNER"); } } public static void main(String [] args) {…
38. Q38 Which of the following will always represent Locale object for English in US? Select 2 options.
39. Q39 Given code of Test.java file:package com.udayan.ocp; import java.util.Arrays;import java.util.Collections;import java.util.Comparator;import java.util.List; public class Test { public static void main(String[] args) { List<String> list =…
40. Q40 Given code of Test.java file:package com.udayan.ocp; import java.util.function.BiFunction; public class Test { public static void main(String[] args) { BiFunction<Integer, Integer, Character> compFunc = (i,…
41. Q41 Given code:  package com.udayan.ocp; class Printer<T implements Cloneable> {} public class Test { public static void main(String[] args) { Printer<String> printer = new Printer<>();…
42. Q42 Given code of Test.java file:  package com.udayan.ocp; public class Test { private static void checkStatus(boolean flag) { assert flag : flag = true;…
43. Q43 Given code of Test.java file: package com.udayan.ocp; import java.util.ArrayDeque;import java.util.Deque; public class Test { public static void main(String[] args) { Deque<Character> chars = new ArrayDeque<>();…
44. Q44 Given code of Test.java file:  package com.udayan.ocp; import java.time.*; public class Test { public static void main(String [] args) { System.out.println(Duration.ofDays(-2)); }} What will…
45. Q45 Consider the code of Test.java file: package com.udayan.ocp; public class Test { enum Directions { NORTH("N"), SOUTH("S"), EAST("E"), WEST("W")  private String notation;  Directions(String…
46. Q46 Given code of Test.java file: package com.udayan.ocp; import java.time.*; public class Test { public static void main(String [] args) { LocalTime t1 = LocalTime.now();…
47. Q47 Given structure of MESSAGES table:MESSAGES (msg1 varchar(100), msg2 varchar(100)) MESSAGES table contains below records: 'Happy New Year!', 'Happy Holidays!'Given code of Test.java file: package…
48. Q48 Given Code: package com.udayan.ocp; import java.io.*; class ReadTheFile { static void print() { //Line 4 throw new IOException(); //Line 5 }} public class Test {…
49. Q49 Given code of Test.java file: package com.udayan.ocp; import java.util.Arrays;import java.util.List; public class Test { public static void main(String[] args) { List<Integer> list = Arrays.asList(0,2,4,6,8); list.replaceAll(i…
50. Q50 Given code of Test.java file:  package com.udayan.ocp; import java.util.Comparator;import java.util.stream.Stream; public class Test { public static void main(String[] args) { Stream<String> stream = Stream.of("d",…
51. Q51 Given code of Test.java file: package com.udayan.ocp; import java.util.ArrayList;import java.util.Collections;import java.util.List;import java.util.stream.IntStream; public class Test { public static void main(String[] args) { List<Integer> list…
52. Q52 Given code of Test.java file:  package com.udayan.ocp; import java.io.IOException;import java.nio.file.Files;import java.nio.file.Path;import java.nio.file.Paths;import java.util.stream.Stream; public class Test { public static void main(String[] args) throws IOException…
53. Q53 Given code of Test.java file: package com.udayan.ocp; class MyException1 extends RuntimeException {} class MyException2 extends RuntimeException {} public class Test { private static void m()…
54. Q54 Given structure of EMPLOYEE table: EMPLOYEE (ID integer, FIRSTNAME varchar(100), LASTNAME varchar(100), SALARY real, PRIMARY KEY (ID)) EMPLOYEE table contains below records: 101 John Smith…