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Share some Java and Middleware 1Z0-808 exam questions and answers below.
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 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 three are advantages of the Java exception mechanism? 
A. Improves the program structure because the error handling code is separated from the normal program function 
B. Provides a set of standard exceptions that covers all the possible errors 
C. Improves the program structure because the programmer can choose where to handle exceptions 
D. Improves the program structure because exceptions must be handled in the method in which they occurred 
E. Allows the creation of new exceptions that are tailored to the particular program being created 
Answer: A,C,D

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 three statements describe the object-oriented features of the Java language? 
A. Objects cannot be reused. 
B. A subclass can inherit from a superclass. 
C. Objects can share behaviors with other objects. 
D. A package must contain more than one class. 
E. Object is the root class of all other objects. 
F. A main method must be declared in every class. 
Answer: B,C,F

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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