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Flextronics Core Java Interview Questions
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String is an immutable object. Then how can the following code be justified. String s1 = ?ABC?; String s1 = s1+?XYZ?; s.o.p(s1); The output is ABCXYZ, which is the value of s1 ?

6 13532

Instead of writing Home, Remote Interfaces if i directly extends EJBObject to bean class what happens?

1 3881

Does java support Operator Overloading?

289

Difference between stack and queue?

269

What is the use of 'super' keyword inside a constructor?

268





When does a class need a virtual destructor?

277

What is the use of a copy constructor?

275

What are abstract classes and anonymous classes?

302

Can a constructor be private and how are this() and super() method used with constructor?

293

Explain heap sort?

305

How do you access command-line arguments within the code?

268

What is the difference between static and global variables and also define what are volatile variables?

253

Explain the selection sort algorithm and state its time complexity?

290

What are the characteristics of Final,Finally and Finalize keywords.

301

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836