1Z0-819 Online Practice Questions and Answers

Given: What is the output?

A. Hello world!Bonjour le monde!

B. Hello world!Hello world!

C. Bonjour le monde!Hello world!

D. Bonjour le monde!Bonjour le monde!

Which two var declarations are correct? (Choose two.)

A. var names = new ArrayList<>();

B. var _ = 100;

C. var var = "hello";

D. var y = null;

E. var a;

Given:

What is the result?

A. 2-4

B. 0-6 1-5 2-4

C. 1-5

D. 1-5 2-4

E. The compilation fails due to an error in line 1.

F. 0-6

G. 0-6 2-4

Given the code fragment:

How many lines of text does this program print?

A. four

B. one

C. three

D. two

Given: What must be added in line 1 to compile this class?

A. catch(IOException e) { }

B. catch(FileNotFoundException | IndexOutOfBoundsException e) { }

C. catch(FileNotFoundException | IOException e) { }

D. catch(IndexOutOfBoundsException e) { }catch(FileNotFoundException e) { }

E. catch(FileNotFoundException e) { }catch(IndexOutOfBoundsException e) { }

Which two expressions create a valid Java Path instance? (Choose two.)

A. Paths.get("foo")

B. Paths.getPath("too")

C. Path.get(new URI("file:///domains/oracle/test.txt"))

D. new Path("foo")

E. Paths.get(URL.create("file:///domains/oracle/test.txt"))

Given:

public class X {

}

and

public final class Y extends X {

}

What is the result of compiling these two classes?

A. The compilation fails because there is no zero args constructor defined in class X.

B. The compilation fails because either class X or class Y needs to implement the toString() method.

C. The compilation fails because a final class cannot extend another class.

D. The compilation succeeds.

Which two statements independently compile? (Choose two.)

A. List list = new ArrayList();

B. List list = new ArrayList();

C. List list = new ArrayList();

D. List list = new ArrayList