Free 1Z0-809 Mock Exam – Practice Online Confidently

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 list = Arrays.asList("A", "E", "I", "O");

        list.add("U");

        list.forEach(System.out::print);

    }

}

What will be the result of compiling and executing Test class?

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? 

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 list = Arrays.asList(

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?

What will be the result of compiling and executing class M?

1. package com.udayan.ocp;

2.  

3. class M {

4.     private int num1 = 100;

5.     class N {

6.         private int num2 = 200;

7.     }

8.     

9.     public static void main(String[] args) {

10.         M outer = new M();

11.         M.N inner = outer.new N();

12.         System.out.println(outer.num1 + inner.num2);

13.     }

14. }