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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

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

Which statement is true about Java byte code? 
A. It can run on any platform. 
B. It can run on any platform only if it was compiled for that platform. 
C. It can run on any platform that has the Java Runtime Environment. 
D. It can run on any platform that has a Java compiler. 
E. It can run on any platform only if that platform has both the Java Runtime Environment and a Java compiler. 
Answer: D

Which three statements are true about exception handling? 
A. Only unchecked exceptions can be rethrown. 
B. All subclasses of the RuntimeException class are recoverable. 
C. The parameter in a catch block is of Throwable type. 
D. All subclasses of the RuntimeException class must be caught or declared to be thrown. 
E. All subclasses of the Exception class except the RuntimeException class are checked exceptions. 
F. All subclasses of the Error class are checked exceptions and are recoverable. 
Answer: C,E,F

What is the name of the Java concept that uses access modifiers to protect variables and hide them within a class? 
A. Encapsulation 
B. Inheritance 
C. Abstraction 
D. Instantiation 
E. Polymorphism 
Answer: A

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