Free 1Z0-809 Exam Dumps

Question 21

Given the code fragment:
1Z0-809 dumps exhibit
Which statement can be inserted into line n1 to print 1,2; 1,10; 2,20;?

A. BiConsumer<Integer,Integer> c = (i, j) -> {System.out.print (i + “,” + j+ “; “);};
B. BiFunction c = (i, j) –> {System.out.print (i + “,” + j+ “; “)};
C. BiConsumer c = (i, j) –> {System.out.print (i + “,” + j+ “; “)};
D. BiConsumer c = (i, j) –> {System.out.print (i + “,”+ j+ “; “);};

Correct Answer:B

Question 22

Given the content of /resourses/Message.properties: welcome1=”Good day!”
and given the code fragment: Properties prop = new Properties ();
FileInputStream fis = new FileInputStream (“/resources/Message.properties”); prop.load(fis);
System.out.println(prop.getProperty(“welcome1”)); System.out.println(prop.getProperty(“welcome2”, “Test”));//line n1 System.out.println(prop.getProperty(“welcome3”));
What is the result?

A. Good day!Testfollowed by an Exception stack trace
B. Good day!followed by an Exception stack trace
C. Good day!Test null
D. A compilation error occurs at line n1.

Correct Answer:C

Question 23

Given the code fragments:
1Z0-809 dumps exhibit
and

Which two modifications enable to sort the elements of the emps list? (Choose two.)

A. Replace line n1 withclass Person extends Comparator<Person>
B. At line n2 insertpublic int compareTo (Person p) { return this.name.compareTo (p.name);}
C. Replace line n1 withclass Person implements Comparable
D. At line n2 insertpublic int compare (Person p1, Person p2) { return p1.name.compareTo (p2.name);}
E. At line n2 insert:public int compareTo (Person p, Person p2) { return p1.name.compareTo (p2.name);}
F. Replace line n1 withclass Person implements Comparator

Correct Answer:CE

Question 24

Which statement is true about the DriverManager class?

A. It returns an instance of Connection.
B. it executes SQL statements against the database.
C. It only queries metadata of the database.
D. it is written by different vendors for their specific database.

Correct Answer:A
The DriverManager returns an instance of Doctrine\DBAL\Connection which is a wrapper around the underlying driver connection (which is often a PDO instance).

Question 25

Given:
1Z0-809 dumps exhibit
and this code fragment:

What is the result?

A. Open-Close– Exception – 1 Open–Close–
B. Open–Close–Open–Close–
C. A compilation error occurs at line n1.
D. Open–Close–Open–

Correct Answer:C