Given code of Test.java file:
package com.udayan.ocp;
import java.util.concurrent.*;
public class Test {
public static void main(String[] args) throws InterruptedException, ExecutionException {
ExecutorService es = Executors.newSingleThreadExecutor();
Future
System.out.println(f.get());
es.shutdown();
}
}
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?
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