Oracle Oracle Certifications 1Z0-815 Questions & Answers

• Question 61:

  Given: What is the result?

  

  A. 2134

  B. 2143

  C. 214

  D. 234

  Correct Answer: C

  

• Question 62:

  Given: What is the result?

  

  A. is it 1

  B. An IndexOutOfBoundsException is thrown at runtime.

  C. is it 0

  D. this is it 2

  E. this is it 3

  Correct Answer: D

  

• Question 63:

  Which two commands are used to identify class and module dependencies? (Choose two.)

  A. jmod describe

  B. java Hello.java

  C. jdeps --list-deps

  D. jar --show-module-resolution

  E. java --show-module-resolution

  Correct Answer: CE

  Reference: https://docs.oracle.com/en/java/javase/11/tools/jdeps.html#GUID-A543FEBE-908A-49BF996C-39499367ADB4

• Question 64:

  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.

  Correct Answer: AC

  Reference: http://tutorials.jenkov.com/java/modules.html

• Question 65:

  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;

  Correct Answer: BE

• Question 66:

  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

  Correct Answer: D

• Question 67:

  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.

  Correct Answer: F

• Question 68:

  Given:

  

  Which would cause s to be AQCD?

  A. s.replace(s.indexOf("A"), s.indexOf("C"), "Q");

  B. s.replace(s.indexOf("B"), s.indexOf("C"), "Q");

  C. s.replace(s.indexOf("B"), s.indexOf("B"), "Q");

  D. s.replace(s.indexOf("A"), s.indexOf("B"), "Q");

  Correct Answer: C

• Question 69:

  Given:

  

  Which two lines cause compilation errors? (Choose two.)

  A. line 12

  B. line 6

  C. line 9

  D. line 8

  E. line 7

  Correct Answer: AE

• Question 70:

  Which describes a characteristic of setting up the Java development environment?

  A. Setting up the Java development environment requires that you also install the JRE.

  B. The Java development environment is set up for all operating systems by default.

  C. You set up the Java development environment for a specific operating system when you install the JDK.

  D. Setting up the Java development environment occurs when you install an IDE before the JDK.

  Correct Answer: D

  Reference: https://docs.oracle.com/javame/8.1/sdk-dev-guide/install.htm