Oracle Certified Java Associate Exam Quiz!
.
- 1.
Follow the instructions in the image.- A.
Cars
- B.
Cars carts
- C.
Ccars arts
- D.
The code does not compile.
- E.
The code compiles but throws an exception at runtime.
- 2.
Follow the instructions in the image.
- A.
–,+,=,--
- B.
%,*,/,+
- C.
=,+,/,*
- D.
^,*,-,==
- E.
*,/,%,--
- 3.Which of the following are valid JavaBean signatures?
- A.
Public byte getNose(String nose)
- B.
Public void setHead(int head)
- C.
Public String getShoulders()
- D.
Public long isMouth()
- E.
Public void gimmeEars()
- F.
Public boolean isToes()
- 4.
Follow the instructions in the image.
- A.
One line needs to be changed for this code to compile.
- B.
Two lines need to be changed for this code to compile.
- C.
Three lines need to be changed for this code to compile.
- D.
If the code is fixed to compile, none of the cells in the 2D array have a value of 0
- E.
If the code is fixed to compile, half of the cells in the 2D array have a value of 0.
- F.
If the code is fixed to compile, all of the cells in the 2D array have a value of 0.
- 5.Which of the following statements about java. lang. Error is most accurate?
- A.
An Error should be thrown if a file system resource becomes temporarily unavailable.
- B.
An application should never catch an Error.
- C.
Error is a subclass of Exception, making it a checked exception.
- D.
It is possible to catch and handle an Error thrown in an application.
- E.
An Error should be thrown if a user enters invalid input.
- 6.How many of the following variables represent immutable objects? ArrayList l = new ArrayList(); String s = new String(); StringBuilder sb = new StringBuilder(); LocalDateTime t = LocalDateTime.now();
- A.
None
- B.
One
- C.
Two
- D.
Three
- E.
Four
- F.
None of the above—this code doesn’t compile.
- 7.Given a class that uses the following import statements, which class would be automatically accessible without using its full package name? import forest.Bird; import jungle.tree.*; import savana.*;
- A.
Forest.Bird
- B.
Savana.sand.Wave
- C.
Jungle.tree.Huicungo
- D.
Java.lang.Object
- E.
Forest.Sloth
- F.
Forest.ape.bonobo
- 8.
Follow the instructions in the image.
- A.
Leaves growing
- B.
Ing
- C.
Wing
- D.
The code does not compile
- E.
The code compiles but throws an exception at runtime
- 9.
Follow the instructions in the image.
- A.
False false false
- B.
True true true
- C.
False true true
- D.
False false true
- E.
The code does not compile
- 10.
Follow the instructions in the image.
- A.
One
- B.
Two
- C.
Three
- D.
Four
- E.
Five
- F.
None. The code does not compile.
- 11.
Follow the instructions in the image.
- A.
Lines 15 and 17
- B.
Lines 15, 16, and 21
- C.
Line 17
- D.
Lines 17, 18, and 20
- E.
Line 20
- F.
Line 21
- 12.Which of the following do not compile when filling in the blank? long bigNum = ____________;
- A.
1234
- B.
1234.0
- C.
1234.0L
- D.
1234l
- E.
1234L
- F.
1_234
- 13.
Follow the instructions in the image.
- A.
None
- B.
One
- C.
Two
- D.
This is an infinite loop.
- E.
The code does not compile.
- 14.
Follow the instructions in the image.
- A.
6
- B.
X
- C.
The code does not compile.
- D.
The code compiles but throws a NullPointerException at runtime.
- E.
The code compiles but throws a different exception at runtime.
- F.
The output is not guaranteed.
- 15.Which of the following use generics and compile without warnings? (Choose two.)
- A.
List<String> a = new ArrayList();
- B.
List<> b = new ArrayList();
- C.
List<String> c = new ArrayList<>();
- D.
List<> d = new ArrayList<>();
- E.
List<String> e = new ArrayList<String>(); F. List<> f = new ArrayList<String>();
- F.
List<> f = new ArrayList<String>();
- 16.
Which of the following are true right before the main() method ends? (Choose two.)
- A.
No objects are eligible for garbage collection.
- B.
One object is eligible for garbage collection.
- C.
Two objects are eligible for garbage collection.
- D.
No objects are guaranteed to be garbage collected
- E.
One object is guaranteed to be garbage collected.
- F.
Two objects are guaranteed to be garbage collected.
- 17.
Follow the instructions in the image.
- A.
None. The code compiles and prints swim!.
- B.
None. The code compiles and prints a stack trace.
- C.
One
- D.
Two
- E.
Three
- 18.
Follow the instructions in the image.
- A.
One
- B.
Two
- C.
Three
- D.
None. It doesnt compile.
- E.
None. It throws an exception at runtime.
- 19.Which keywords are required with a try statement? (CAREFUL) I. finalize II. catch III. throws IV. finally
- A.
I Only
- B.
II Only
- C.
II only
- D.
IV Only
- E.
I or II, or both
- F.
None of the above
- 20.
Follow the instructions in the image.
- A.
5
- B.
7
- C.
8
- D.
The code does not compile.
- E.
The code compiles but throws an exception at runtime.
- 21.
Follow the instructions in the image.
- A.
0 1
- B.
1 1
- C.
1 2
- D.
The code does not compile.
- E.
The code compiles but throws an exception at runtime.
- 22.
Follow the instructions in the image.
- A.
B
- B.
Black
- C.
Lack
- D.
The code does not compile.
- E.
The code compiles but throws an exception at runtime.
- 23.Which modifiers can be independently applied to an interface method? (Choose three.)
- A.
Default
- B.
Protected
- C.
Static
- D.
Private
- E.
Final
- F.
Abstract
- 24.
Follow the instructions in the image.
- A.
Null
- B.
Shoelace
- C.
Shoelaceshoelace
- D.
The code does not compile
- E.
This is an infinite loop
- F.
The code compiles but throws an exception at runtime.
- 25.What statements are true about compiling a Java class file? (Choose two.)
- A.
If the file does not contain a package statement, then the compiler considers the classpart of the java.lang package.
- B.
The compiler assumes every class implicitly imports the java.lang.* package
- C.
The compiler assumes every class implicitly imports the java.util.* package.
- D.
Java requires every file to declare a package statement
- E.
Java requires every file to declare at least one import statement
- F.
If the class declaration does not extend another class, then it implicitly extends the java.lang.Object class.
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