Recent questions in Java Interview Questions and Answers

Recent questions in Java Interview Questions and Answers

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What access level do you need to specify in the class declaration?

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What Java technique would you use to implement it?

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How can you minimize the need of garbage collection and make the memory use more effective?

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How would you make a copy of an entire Java object with its state?

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Which of the two Java collections should you use: ArrayList or LinkedList?

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If you're overriding the method equals() of an object, which other method you might also consider?

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What comes to mind when someone mentions a shallow copy in Java?

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What comes to mind when you hear about a young generation in Java?

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Can you use abstract classes instead of interfaces?

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What's the difference between a queue and a stack?

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How can a subclass call a method or a constructor defined in a superclass?

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When should the method invokeLater() be used?

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What's the main difference between a Vector and an ArrayList

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What can go wrong if you replace && with & in the following code: String a=null; if (a!=null && a.length()>10) {...}

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Can an inner class declared inside of a method access local variables of this method?

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Does it matter in what order catch statements for FileNotFoundException and IOExceptipon are written?

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What would you use to compare two String variables - the operator == or the method equals()?

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What's the difference between J2SDK 1.5 and J2SDK 5.0?

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If a class is located in a package, what do you need to change in the OS environment to be able to use it?

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Explain the usage of Java packages.

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