Given the code fragments: class Employee { Optional
address;Employee (Optional address) { this.address = address;
}
public Optional getAddress() { return address; }
}
class Address {
String city = “New York”;
public String getCity { return city: } public String toString() {
return city;
}
}
and
Address address = null;
Optional addrs1 = Optional.ofNullable (address);
Employee e1 = new Employee (addrs1);
String eAddress = (addrs1.isPresent()) ? addrs1.get().getCity() : “City Not available”;
What is the result?
Correct Answer:
B
Given the code fragment:
List
int i = 0;
boolean result = s.contains (“pen”);
System.out.print(i++) + “:”); return result;
};
str.stream()
.filter(test)
.findFirst()
.i fPresent(System.out ::print); What is the result?
Correct Answer:
A
Given:<>
Correct Answer:
D
Given:
< ><>>< ><>
Correct Answer:
D
Given the structure of the STUDENT table: Student (id INTEGER, name VARCHAR) Given:
public class Test {
static Connection newConnection =null;
public static Connection get DBConnection () throws SQLException { try (Connection con = DriveManager.getConnection(URL, username, password)) {
newConnection = con;
}
return newConnection;
}
public static void main (String [] args) throws SQLException { get DBConnection ();
Statement st = newConnection.createStatement(); st.executeUpdate(“INSERT INTO student VALUES (102, ‘Kelvin’)”);
}
}
Assume that:
The required database driver is configured in the classpath.
The appropriate database is accessible with the URL, userName, and passWord exists. The SQL query is valid.
What is the result?
Correct Answer:
C
