1Z0-819 Online Practice Questions and Answers

Given:

Which three classes successfully override printOne()? (Choose three.)

A. Option A

B. Option B

C. Option C

D. Option D

E. Option E

F. Option F

Given:

Which three actions implement Java SE security guidelines? (Choose three.)

A. Change line 7 to return names.clone();.

B. Change line 4 to this.names = names.clone();.

C. Change the getNames() method name to get$Names().

D. Change line 6 to public synchronized String[] getNames() {.

E. Change line 2 to private final String[] names;.

F. Change line 3 to private Secret(String[] names) {.

G. Change line 2 to protected volatile String[] names;.

Given:

What is the result?

A. 4

B. 3

C. An exception is thrown at runtime.

D. 5

Given the code fragment:

What is the result?

A. Option A

B. Option B

C. Option C

D. Option D

Given:

A. Option A

B. Option B

C. Option C

D. Option D

Given:

What is the result?

A. Keys: 4 Values: 4 Map: 0

B. Keys: 4 Values: 4 Map: 4

C. The compilation fails.

D. Keys: 0 Values: 0 Map:

E. Keys: 0 Values: 0 Map: 0

Examine these module declarations:

Which two statements are correct? (Choose two.)

A. The ServiceProvider module is the only module that, at run time, can provide the com.example.api API.

B. The placement of the com.example.api API in a separate module, ServiceAPI, makes it easy to install multiple provider modules.

C. The Consumer module should require the ServiceProvider module.

D. The ServiceProvider module should export the com.myimpl package.

E. The ServiceProvider module does not know the identity of a module (such as Consumer) that uses the com.example.api API.

Given the code fragment:

What is the result?

A. ab cd ef

B. An ArrayIndexOutOfBoundsException is thrown at runtime.

C. The compilation fails.

D. abc def

E. ad be cf

Given the Customer table structure:

ID Number Primary Key NAME Text Nullable Given code fragment:

Which statement inserted on line 14 sets NAME column to a NULL value?

A. Stmt.setNull(2, java,sql. Types, VARCHAR);

B. Stmt.setNull(2 string, class);

C. Stmt.setNull(2, null);

D. Stmt.setNull(2, java.lang, string);

Given:

You want the code to produce this output:

John

Joe

Jane

Which code fragment should be inserted on line 1 and line 2 to produce the output?

A. Insert Comparator on line 1. Insert public int compare(Person p1, Person p2) { return p1.name.compare(p2.name); } on line 2.

B. Insert Comparator on line 1. Insert public int compareTo(Person person) { return person.name.compareTo(this.name); } on line 2.

C. Insert Comparable on line 1. Insert

public int compare(Person p1, Person p2) {

return p1.name.compare(p2.name);

}

on line 2.

D. Insert Comparator on line 1. Insert public int compare(Person person) { return person.name.compare(this.name); } on line 2.