Oracle certification 1Z0-808 study guide | Certpark

Now Oracle 1Z0-808 is a hot certification exam in the IT industry, and a lot of IT professionals all want to get Oracle 1Z0-808 certification. So Oracle certification1Z0-808 exam is also a very popular IT certification exam. Oracle certification 1Z0-808 study guide is very helpful to your work in the IT industry, which can help promote your position and salary a lot and let your life have more security.Everyone has their own dreams. What is your dream? Is it a promotion, a raise or so? My dream is to pass the Oracle 1Z0-808 exam. 

Share some Java and Middleware 1Z0-808 exam questions and answers below.
Which two statements are true? 
A. Error class is unextendable. 
B. Error class is extendable. 
C. Error is a RuntimeException. 
D. Error is an Exception. 
E. Error is a Throwable. 
Answer: B,C

Which statement will empty the contents of a StringBuilder variable named sb? 
A. sb. deleteAll (); 
B. sb. delete (0, sb. size () ); 
C. sb. delete (0, sb. length () ); 
D. sb. removeAll (); 
Answer: C

Which two are benefits of polymorphism? 
A. Faster code at runtime 
B. More efficient code at runtime 
C. More dynamic code at runtime 
D. More flexible and reusable code 
E. Code that is protected from extension by other classes 
Answer: B,D

Which statement is true about the switch statement? 
A. It must contain the default section. 
B. The break statement, at the end of each case block, is mandatory. 
C. Its case label literals can be changed at runtime. 
D. Its expression must evaluate to a single value. 
Answer: D

Which statement best describes encapsulation? 
A. Encapsulation ensures that classes can be designed so that only certain fields and methods of an object are accessible from other objects. 
B. Encapsulation ensures that classes can be designed so that their methods are inheritable. 
C. Encapsulation ensures that classes can be designed with some fields and methods declared as abstract. 
D. Encapsulation ensures that classes can be designed so that if a method has an argument MyType x, any subclass of MyType can be passed to that method. 
Answer: A

Given the code fragment: 
int[] array = {1, 2, 3, 4, 5}; 
And given the requirements: 
1. Process all the elements of the array in the order of entry. 
2. Process all the elements of the array in the reverse order of entry. 
3. Process alternating elements of the array in the order of entry. 
Which two statements are true? 
A. Requirements 1, 2, and 3 can be implemented by using the enhanced for loop. 
B. Requirements 1, 2, and 3 can be implemented by using the standard for loop. 
C. Requirements 2 and 3 CANNOT be implemented by using the standard for loop. 
D. Requirement 1 can be implemented by using the enhanced for loop. 
E. Requirement 3 CANNOT be implemented by using either the enhanced for loop or the standard for loop. 
Answer: D,E

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