Oracle Oracle Certifications 1Z0-811 Questions & Answers

• Question 31:

  Given the contents of Student.java:

  

  Which statement is true?

  A. The commands: javac Student.java java Student Richard William Java throw an error about a missing Course.class file.

  B. The commands: javac Course.java javac Student.java java Course java Student "Richard William" Java are used to print Richard William is studying Java.

  C. The commands: javac Student.java java Student Richard William Java are used to print Richard William is studying Java.

  D. The commands: javac Student.java java Student "Richard William" Java are used to print Richard William is studying Java.

  Correct Answer: A

• Question 32:

  Given the code fragment:

  

  At which line does a compilation error occur?

  A. lines 5 and 7

  B. line 7

  C. lines 6 and 8

  D. line 5

  Correct Answer: D

• Question 33:

  Given the code fragment:

  

  Which for loop statement can be used to print 135?

  A. for(int idx = 1; idx < arr.length; idx+=2) { System.out.print (arr[idx]); }

  B. for(int idx = 1; idx < arr.length?; idx++) { System.out.print (arr[idx++]); }

  C. for(int idx = 0; idx < arr.length; idx++) { System.out.print (arr[idx]); }

  D. for(int idx = 0; idx < arr.length; idx+=2) { System.out.print (arr[idx]); }

  Correct Answer: D

  

• Question 34:

  Given the code fragment:

  

  What is the result?

  A. false false

  B. true true

  C. true false

  D. false true

  Correct Answer: A

  

• Question 35:

  Given: Which statement is true about the main method?

  

  A. It can be a non-static method.

  B. Its parameter can be of type Integer [].

  C. It cannot be defined in a non-public class.

  D. It cannot be invoked by its name.

  Correct Answer: D

• Question 36:

  Given the code fragment:

  

  Which code fragment, when inserted at line n1, enables it to print Rita is 14 years old?

  A. System.out.println("%s is %d years old" +name+age);

  B. System.out.println("%s is %n years old" name, age);

  C. System.out.printf("%s is %d years old", name, age);

  D. System.out.printf("%s is %n years old", name, age);

  Correct Answer: C

  

• Question 37:

  Given:

  

  What is the result?

  A. A compilation error occurs in the modify method.

  B. 99

  C. 5

  D. A compilation error occurs in the main method.

  Correct Answer: D

• Question 38:

  

  What does import java.io* mean?

  A. Only the io class is imported.

  B. All classes in the io package are imported.

  C. All classes whose names start with io are imported.

  D. All classes in the io package and the subpackages of io packages, if any, are imported.

  Correct Answer: D

• Question 39:

  Given:

  

  What is the result?

  A. Compilation fails. To make it compile, replace line n1 with var1 = 0;

  B. Compilation fails. To make it compile, replace line n2 with var2 = 0;

  C. 0

  D. Nothing is printed.

  Correct Answer: B

• Question 40:

  Given these class definitions:

  

  Which class or classes compile?

  A. only MyClassB, MyClassC, and MyClassD

  B. only MyClassB

  C. MyClassA, MyClassB, MyClassC, and MyClassD

  D. only MyClassB and MyClassD

  Correct Answer: D