Java Programming Exam Questions List

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Here you can get professional help and the most common java programming questions and answers that will help you with your studies.http://www.examquestions.org/

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• Publié par: ExamQuestions
• Publié le: 13 janvier 2017
• Nombre de lectures: 2
• Langue: English

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Java Programming Exam Questions

1. Which is true about an anonymous inner class? • It can extend exactly one class and implement exactly one interface. • It can extend exactly one class and can implement multiple interfaces. • It can extend exactly one class or implement exactly one interface. (Answer) • It can implement multiple interfaces regardless of whether it also extends a class. 2. Which statement is true about a static nested class? • You must have a reference to an instance of the enclosing class in order to instantiate it. • It does not have access to nonstatic members of the enclosing class. (Answer) • Its variables and methods must be static. • It must extend the enclosing class. 3. Which constructs an anonymous inner class instance? • Runnable r = new Runnable() { }; • Runnable r = new Runnable(public void run() { }); • Runnable r = new Runnable { public void run(){}}; • System.out.println(new Runnable() {public void run() { }}); (Answer) 4. You want subclasses in any package to have access to members of a superclass. Which is the most restrictive access that accomplishes this objective? • public • private • protected (Answer) • transient 5. public class Test { } What is the prototype of the default constructor?

• Test( ) • Test(void) • public Test( ) (Answer) • public Test(void)

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