Answer: static variable : Questions « Utility Classes « SCJP

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SCJP » Utility Classes » Questions

8.30.26.Answer: static variable

Exception in thread "main" java.lang.Error: Unresolved compilation problem: 
	Duplicate local variable ouch

	at MainClass.go(MainClass.java:11)
	at MainClass.main(MainClass.java:5)

8.30.Questions
	8.30.1.	What happens when you try to compile and run code containing the following lines:
	8.30.2.	Answer: Float + String
	8.30.3.	Which of the following Collections classes can return object references in the order of addition?
	8.30.4.	Answer: collection and order
	8.30.5.	Which of the following interfaces in the java.util package does java.util.Hashtable implement?
	8.30.6.	Answer: Hashtable and interface
	8.30.7.	What does Math.random() method return?
	8.30.8.	Answer: return value from Math.random()
	8.30.9.	What kind of stream is the System.out object?
	8.30.10.	Answer: System.out stream
	8.30.11.	When // XXX is reached, how many objects are eligible for GC?
	8.30.12.	Answer: garbage collection
	8.30.13.	What is the result(overloaded and var-args methods)?
	8.30.14.	Answer: overloaded and var-args methods
	8.30.15.	What is the result(array dimension)?
	8.30.16.	Answer: array dimension
	8.30.17.	What is the result(constructor)?
	8.30.18.	Answer: constructor
	8.30.19.	What is the result(final class reference)?
	8.30.20.	Answer: final class reference
	8.30.21.	What is the result(hierarchy and static init blocks)?
	8.30.22.	Answer: hierarchy and static init blocks
	8.30.23.	What is the output(enum)?
	8.30.24.	Answer: enum
	8.30.25.	What is the result(static variable)?
	8.30.26.	Answer: static variable
	8.30.27.	What is the result(autobox and widen)?
	8.30.28.	Answer: autobox and widen
	8.30.29.	Which are true about the objects created within main(), and eligible for garbage collection when line 14 is reached?
	8.30.30.	Answer: garbage collection and array objects
	8.30.31.	When 'do stuff' is reached, how many objects will be eligible for garbage collection?
	8.30.32.	Answer: ready for garbage collection
	8.30.33.	What is the result(class instance variables)?
	8.30.34.	Answer: class instance variables
	8.30.35.	What is the result(pre-increment operators)?
	8.30.36.	Answer: pre-increment operators

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