Given code of Test.java file:
1. package com.udayan.ocp;
2.
3. import java.util.List;
4. import java.util.Map;
5. import java.util.stream.Collectors;
6. import java.util.stream.Stream;
7.
8. class Certification {
9. String studId;
10. String test;
11. int marks;
12.
13. Certification(String studId, String test, int marks) {
14. this.studId = studId;
15. this.test = test;
16. this.marks = marks;
17. }
18.
19. public String toString() {
20. return "{" + studId + ", " + test + ", " + marks + "}";
21. }
22.
23. public String getStudId() {
24. return studId;
25. }
26.
27. public String getTest() {
28. return test;
29. }
30.
31. public int getMarks() {
32. return marks;
33. }
34. }
35.
36. public class Test {
37. public static void main(String[] args) {
38. Certification c1 = new Certification("S001", "OCA", 87);
39. Certification c2 = new Certification("S002", "OCA", 82);
40. Certification c3 = new Certification("S001", "OCP", 79);
41. Certification c4 = new Certification("S002", "OCP", 89);
42. Certification c5 = new Certification("S003", "OCA", 60);
43. Certification c6 = new Certification("S004", "OCA", 88);
44.
45. Stream
46. Map
47. stream.collect(Collectors.partitioningBy(s -> s.equals("OCA")));
48. System.out.println(map.get(true));
49. }
50. }
What will be the result of compiling and executing Test class?
Given code of Test.java file:
1. package com.udayan.ocp;
2.
3. import java.util.Arrays;
4. import java.util.Comparator;
5. import java.util.List;
6.
7. class Person {
8. private String firstName;
9. private String lastName;
10.
11. public Person(String firstName, String lastName) {
12. this.firstName = firstName;
13. this.lastName = lastName;
14. }
15.
16. public String getFirstName() {
17. return firstName;
18. }
19.
20. public String getLastName() {
21. return lastName;
22. }
23.
24. public String toString() {
25. return "{" + firstName + ", " + lastName + "}";
26. }
27. }
28.
29. public class Test {
30. public static void main(String[] args) {
31. List
32. new Person("Tom", "Riddle"),
33. new Person("Tom", "Hanks"),
34. new Person("Yusuf", "Pathan"));
35. list.stream().sorted(Comparator.comparing(Person::getFirstName).reversed()
36. .thenComparing(Person::getLastName)).forEach(System.out::println);
37. }
38. }
What will be the result of compiling and executing Test class?
Given the code fragment:
Given structure of EMPLOYEE table:
EMPLOYEE (ID integer, FIRSTNAME varchar(100), LASTNAME varchar(100), SALARY real, PRIMARY KEY (ID))
EMPLOYEE table contains below records:
1. 101 John Smith 12000
2. 102 Sean Smith 15000
3. 103 Regina Williams 15500
4. 104 Natasha George 14600
Given code of Test.java file:
1. package com.udayan.ocp;
2.
3. import java.sql.*;
4. import java.util.Properties;
5.
6. public class Test {
7. public static void main(String[] args) throws Exception {
8. String url = "jdbc:mysql://localhost:3306/ocp";
9. Properties prop = new Properties();
10. prop.put("user", "root");
11. prop.put("password", "password");
12. String query = "Select ID, FIRSTNAME, LASTNAME, SALARY FROM EMPLOYEE ORDER BY ID";
13. try (Connection con = DriverManager.getConnection(url, prop);
14. Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
15. ResultSet rs = stmt.executeQuery(query);)
16. {
17. rs.afterLast();
18. rs.relative(-1);
19. rs.previous();
20. System.out.println(rs.getInt(1));
21. }
22. }
23. }
Also assume:
URL, username and password are correct.
SQL query is correct and valid.
The JDBC 4.2 driver jar is configured in the classpath.
What will be the result of compiling and executing Test class?
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?
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