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Oracle 1Z0-808 Java SE 8 Programmer I
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Question: 1 Given:
What is the result? A. 200.0 : 100.0 B. 400.0 : 200.0 C. 400.0 : 100.0 D. Compilaton fails.
Answer: B Question: 2 Given the code fragment:
What is the result if the integer aVar is 9? A. Hello World! B. Hello Universe! C. Hello World! D. Compilaton fails.
Answer: A
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Question: 3 Given the code fragment:
What is the result? A. May 04, 2014T00:00:00.000 B. 2014-05-04T00:00: 00. 000 C. 5/4/14T00:00:00.000 D. An excepton is thrown at runtme.
Answer: B Explanaton: Reference: htps://docs.oracle.com//avase///docs/api//ava/tme/format/DateTimemormater.html predefned formaterss
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Question: 4 Given the code fragment:
What is the result? A. Sum is 600 B. Compilaton fails at line n1. C. Compilaton fails at line n2. D. A ClassCastExcepton is thrown at line n1. E. A ClassCastExcepton is thrown at line n2.
Answer: E Question: 5 What is the name of the Java concept that uses access modifers to protect variables and hide them within a class?
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A. Encapsulaton B. Inheritance C. Abstracton D. Instantaton E. Polymorphism
Answer: A Explanaton: Using the private modifer is the main way that an ob/ect encapsulates itself and hide data from the outside world. Explanaton: Reference: htp://www.tutorialspoint.com//ava//avaaaccessamodifers.htm
Question: 6 Given the code fragment:
Which two modifcatons, made independently, enable the code to compile? A. Make the method at line n1 public. B. Make the method at line n2 public. C. Make the method at line n3 public. D. Make the method at line n3 protected. E. Make the method at line n4 public.
Answer: B, C Question: 7 Given:
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And given the code fragment:
What is the result? A. 4W 100 Auto 4W 150 Manual B. Null 0 Auto 4W 150 Manual C. Compilaton fails only at line n1 D. Compilaton fails only at line n2 E. Compilaton fails at both line n1 and line n2
Answer: B Question: 8 Given the code fragment:
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Which two modifcatons should you make so that the code compiles successfully?
A. Opton A B. Opton B C. Opton C D. Opton D E. Opton E
Answer: D, E Question: 9 Given the following two classes:
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How should you write methods in the ElectricAccount class at line n1 so that the member variable bill is always equal to the value of the member variable kwh multplied by the member variable rate? Any amount of electricity used by a customer (represented by an instance of the customer classs must contribute to the customer's bill (represented by the member variable bills through the method useElectricity method. An instance of the customer class should never be able to tamper with or decrease the value of the member variable bill.
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A. Opton A B. Opton B C. Opton C D. Opton D
Answer: A, C Question: 10 Given the code fragment:
What is the result? A. Match 1 B. Match 2 C. No Match D. A NullPointerExcepton is thrown at runtme.
Answer: B
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