Difference between a class and an object?

0 Answers  

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What is scope & storage allocation of static, local and register variables? Explain with an example.

0 Answers   IBS,

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Differentiate between array list and vector in java.

0 Answers  

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Explain about object oriented programming and its features?

0 Answers  

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What is the default initialized value of a boolean type variable?

3 Answers  

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Is Java is 100% pure OOPS? Explain?

27 Answers   ANZ,

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A class can be a subclass of itself?

2 Answers   Genesis,

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Can you start a thread twice in Java?

0 Answers  

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Given: 10. interface A { void x(); } 11. class B implements A { public void x() { } public voidy() { } } 12. class C extends B { public void x() {} } And: 20. java.util.List list = new java.util.ArrayList(); 21. list.add(new B()); 22. list.add(new C()); 23. for (A a:list) { 24. a.x(); 25. a.y();; 26. } What is the result? 1 Compilation fails because of an error in line 25. 2 The code runs with no output. 3 An exception is thrown at runtime. 4 Compilation fails because of an error in line 20.

3 Answers  

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Can you create an object of an abstract class?

0 Answers  

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What are wrapper classes?

11 Answers   Noah Solutions,

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Can a class be private in java?

0 Answers  

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