Oracle 1Z0-815 Online Practice Questions and Exam Preparation

Oracle 1Z0-815 Online Questions & Answers

• Question 71:

  Which command line runs the main class com.acme.Main from the module com.example?

  A. java --module-path mods com.example/com.acme.Main
  B. java –classpath com.example.jar com.acme.Main
  C. java --module-path mods -m com.example/com.acme.Main
  D. java -classpath com.example.jar –m com.example/com.acme.Main
  D. java -classpath com.example.jar –m com.example/com.acme.Main

• Question 72:

  Analyze the code: Which two options can you insert inside println method to produce Global:namescope? (Choose two.)

  

  A. Test.prefix+Test.name
  B. new Test().prefix+new Test().name
  C. Test.prefix+Test.getName()
  D. Test.getName+prefix
  E. prefix+Test.name
  F. prefix+name
  B. new Test().prefix+new Test().name
  C. Test.prefix+Test.getName()

• Question 73:

  Given:

  

  Which is true?

  A. The code compiles but does not print any result.
  B. The code prints 25.
  C. The code does not compile.
  D. The code throws an exception at runtime.
  C. The code does not compile.

• Question 74:

  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
  C. jdeps --list-deps
  E. java --show-module-resolution

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  Reference: https://docs.oracle.com/en/java/javase/11/tools/jdeps.html#GUID-A543FEBE-908A-49BF-996C-39499367ADB4

• Question 75:

  Given:

  

  What is the result?

  A. 5
  B. 3
  C. 23
  D. 25
  E. 11
  B. 3

• Question 76:

  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
  D. javac fails to compile the class and prints the error message, Error: Could not find or load main class Mycar.class

• Question 77:

  Examine this excerpt from the declaration of the java.se module:

  

  What does the transitive modifier mean?

  A. Only a module that requires the java.se module is permitted to require the java.sql module.
  B. Any module that requires the java.se module does not need to require the java.sql module.
  C. Any module that attempts to require the java.se module actually requires the java.sql module instead.
  D. Any module that requires the java.sql module does not need to require the java.se module.
  A. Only a module that requires the java.se module is permitted to require the java.sql module.

• Question 78:

  Given:

  

  Which two lines inserted in line 1 will allow this code to compile? (Choose two.)

  A. protected void walk(){}
  B. void walk(){}
  C. abstract void walk();
  D. private void walk(){}
  E. public abstract void walk();
  A. protected void walk(){}
  B. void walk(){}

• Question 79:

  

  Given: /code/a/Test.java containing:

  

  and

  /code/b/Best.java

  containing:

  package b;

  public class Best { }

  Which is the valid way to generate bytecode for all classes?

  A. java /code/a/Test.java
  B. javac –d /code /code/a/Test
  C. java /code/a/Test.java /code/b/Best.java
  D. java –cp /code a.Test
  E. javac –d /code /code/a/Test.java /code/b/Best.java
  F. javac –d /code /code/a/Test.java
  E. javac –d /code /code/a/Test.java /code/b/Best.java

• Question 80:

  Given: What is the result?

  

  A. b1
  B. 2
  C. b2
  D. 1
  E. b3
  F. 3
  G. The compilation fails due to an error in line 1.
  F. 3

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