oracle 1z0-819 practice test

Given:

What is the result?

• A. 5
• B. 3
• C. 23
• D. 25
• E. 11

Given:


What is the result?
A. 2,34,34,5
B. 2,34,54,5
C. 2,54,54,5
D. 2,34,54,3

Given:

What is the result?

• A. It throws a runtime exception.
• B. Value of Euler = 2.71828
• C. The code does not compile.
• D. Value of Euler = “2.71828”

Given:

executed using this command:
java Myclass My Car is red
What is the output of this class?

• A. Car--red--My
• B. My--Car--is
• C. My--is--java
• D. java--Myclass--My
• E. Myclass--Car--red

Given:

Which two allow a.Main to allocate a new Person? (Choose two.)

• A. In Line 1, change the access modifier to privateprivate Person() {
• B. In Line 1, change the access modifier to publicpublic Person() {
• C. In Line 2, add extends Person to the Main classpublic class Main extends Person {and change Line 3 to create a new Main objectPerson person = new Main();
• D. In Line 2, change the access modifier to protectedprotected class Main {
• E. In Line 1, remove the access modifierPerson() {

Given:


Which loop incurs a compile time error?

• A. the loop starting line 11
• B. the loop starting line 7
• C. the loop starting line 14
• D. the loop starting line 3

Which two statements are true about Java modules? (Choose two.)

• A. Modular jars loaded from --module-path are automatic modules.
• B. Any named module can directly access all classes in an automatic module.
• C. Classes found in –classpath are part of an unnamed module.
• D. Modular jars loaded from –classpath are automatic modules.
• E. If a package is defined in both the named module and the unnamed module, then the package in the unnamed module is ignored.

Given:


Which two lines of code when inserted in line 1 correctly modifies instance variables? (Choose two.)

• A. setCCount(c) = cCount;
• B. tCount = tCount;
• C. setGCount(g);
• D. cCount = setCCount(c);
• E. aCount = a;

Given:


What is the expected result of javac?

• A. javac fails to compile the class and prints the error message, C:\workspace4\Mycar.java:1:error: package java does not exist
• B. javac compiles Mycar.java without errors or warnings.
• C. javac fails to compile the class and prints the error message, C:\workspace4\Mycar.java:1:error: expected import java.lang
• D. javac fails to compile the class and prints the error message, Error: Could not find or load main class Mycar.class

Given:

Which is true?

• A. The compilation fails due to an error in line 6.
• B. The compilation succeeds.
• C. The compilation fails due to an error in line 4.
• D. The compilation fails due to an error in line 10.
• E. The compilation fails due to an error in line 7.
• F. The compilation fails due to an error in line 9.
• G. The compilation fails due to an error in line 2.