Oracle 1Z0-815 Online Practice Questions and Exam Preparation

Oracle 1Z0-815 Online Questions & Answers

• Question 81:

  Given: What is the result?

  

  A. Map: 0 Keys: 0 Values: 0
  B. The compilation fails.
  C. Map: 4 Keys: 4 Values: 4
  D. Map: 4 Keys: 0 Values: 0
  E. Map: 0 Keys: 4 Values: 4
  D. Map: 4 Keys: 0 Values: 0

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• Question 82:

  Given:

  

  Which two statements can be added at line 1 in Bar to successfully compile it? (Choose two.)

  A. public List foo(Set m) { ... }
  B. public ArrayList foo(Set m) { ... }
  C. public List foo(TreeSet m) { ... }
  D. public List foo(Set m) { ... }
  E. public List foo(Set m) { ... }
  F. public ArrayList foo(Set m) { ... }
  E. public List foo(Set m) { ... }
  F. public ArrayList foo(Set m) { ... }

• Question 83:

  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;
  B. tCount = tCount;
  E. aCount = a;

• Question 84:

  Given:

  

  Which three are correct? (Choose three.)

  A. b1.foo(li) prints Hello world!
  B. f1.foo(li) prints Bonjour le monde!
  C. f1.foo(li) prints Hello world!
  D. f1.foo(li) prints Hola Mundo!
  E. b1.foo(li) prints Bonjour le monde!
  F. f2.foo(li) prints Hola Mundo!
  G. f2.foo(li) prints Bonjour le monde!
  H. b1.foo(li) prints Hola Mundo!
  I. f2.foo(li) prints Hello world!
  A. b1.foo(li) prints Hello world!
  B. f1.foo(li) prints Bonjour le monde!
  H. b1.foo(li) prints Hola Mundo!

• Question 85:

  Given:

  

  Which two methods modify field values? (Choose two.)

  A. setAllCounts
  B. setACount
  C. setGCount
  D. setCCount
  E. setTCount
  B. setACount
  E. setTCount

• Question 86:

  Which set of commands is necessary to create and run a custom runtime image from Java source files?

  A. java, jdeps
  B. javac, jlink
  C. jar, jlink
  D. javac, jar
  C. jar, jlink

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  Reference: https://blogs.oracle.com/jtc/automating-the-creation-of-jdk9-reduced-runtime-images-in-netbeans

• Question 87:

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

  A. java.base exports all of the Java platforms core packages.
  B. module-info.java can be placed in any folder inside module-path.
  C. A module must be declared in module-info.java file.
  D. module-info.java cannot be empty.
  E. By default, modules can access each other as long as they run in the same folder.
  C. A module must be declared in module-info.java file.
  E. By default, modules can access each other as long as they run in the same folder.

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

• Question 88:

  Given:

  

  Which three classes successfully override printOne()? (Choose three.)

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  E. Option E
  F. Option F
  A. Option A
  B. Option B
  C. Option C

• Question 89:

  Given: What is the result?

  

  A. 9
  B. An exception is thrown at runtime.
  C. 3
  D. 6
  D. 6

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• Question 90:

  Given: and omitting the throws FooException clause results in a compilation error. Which statement is true about FooException?

  

  A. FooException is a subclass of RuntimeError.
  B. FooException is unchecked.
  C. The body of foo can only throw FooException.
  D. The body of foo can throw FooException or one of its subclasses.
  D. The body of foo can throw FooException or one of its subclasses.

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  Reference: https://stackoverflow.com/questions/47871728/throwing-a-parent-class-exception-force-to-throw-its-sub-class-exception-event-t