Free Oracle 1Z0-809 Exam Questions
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Oracle 1Z0-809 Exam Questions
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Provided By: Oracle
- Exam: Java SE 8 Programmer II
- Certification: Oracle Java
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Total Questions: 469
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Updated On: Mar 28, 2025
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Rated: 4.9 |
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Online Users: 938
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Question 1
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Given the code fragment:9. Connection conn = DriveManager.getConnection(dbURL, userName, passWord);10. String query = “SELECT id FROM Employee”;11. try (Statement stmt = conn.createStatement()) {12. ResultSet rs = stmt.executeQuery(query);13. stmt.executeQuery(“SELECT id FROM Customer”);14. while (rs.next()) {15. //process the results16. System.out.println(“Employee ID: “+ rs.getInt(“id”));17. }18. } catch (Exception e) {19. System.out.println (“Error”);20. }Assume that:The required database driver is configured in the classpath.The appropriate database is accessible with the dbURL, userName, and passWord exists.The Employee and Customer tables are available and each table has id column with a few records andthe SQL queries are valid.What is the result of compiling and executing this code fragment?
Answer: C
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Given the code fragment:
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Question 2
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Given code of Test.java file:
1. package com.udayan.ocp;
2.
3. import java.util.stream.Stream;
4.
5. public class Test {
6. public static void main(String[] args) {
7. Stream
stream = Stream.of("d", "cc", "bbb", "aaaa"); 8. stream.sorted().forEach(System.out::println);
9. }
10. }
Which of the following needs to be done, so that output is:
d
cc
bbb
aaaa
Answer: B
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Given code of Test.java file:
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Question 3
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Given code of Test.java file:
1. package com.udayan.ocp;
2.
3. interface Printer1 {
4. default void print() {
5. System.out.println("Printer1");
6. }
7. }
8.
9. class Printer2 {
10. public void print() {
11. System.out.println("Printer2");
12. }
13. }
14.
15. class Printer extends Printer2 implements Printer1 {
16.
17. }
18.
19. public class Test {
20. public static void main(String[] args) {
21. Printer printer = new Printer();
22. printer.print();
23. }
24. }
What will be the result of compiling and executing Test class?
Answer: D
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Given code of Test.java file:
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Question 4
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Consider the code of Test.java file:
1. package com.udayan.ocp;
2.
3. class Player {
4. String name;
5. int age;
6.
7. Player() {
8. this.name = "Yuvraj";
9. this.age = 36;
10. }
11.
12. public String toString() {
13. return name + ", " + age;
14. }
15.
16. public Class getClass() {
17. return super.getClass();
18. }
19. }
20.
21. public class Test {
22. public static void main(String[] args) {
23. System.out.println(new Player());
24. }
25. }
What will be the result of compiling and executing Test class?
Answer: A
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Consider the code of Test.java file:
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Question 5
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What will be the result of compiling and executing class Test?
1. package com.udayan.ocp;
2.
3. class X {
4. class Y {
5. private void m() {
6. System.out.println("INNER");
7. }
8. }
9.
10. public void invokeInner() {
11. Y obj = new Y(); //Line 9
12. obj.m(); //Line 10
13. }
14. }
15.
16. public class Test {
17. public static void main(String[] args) {
18. new X().invokeInner();
19. }
20. }
Answer: C
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What will be the result of compiling and executing class Test?