What are data types in oop?

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When we serialize an object does the serialization mechanism saves its references too?

0 Answers  

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Is java a utf 8 string?

0 Answers  

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When does the compiler supply a default constructor for a class?

9 Answers   TCS,

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explain what is transient variable in java?

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can we take more than one null values for Unique constraints.

1 Answers   3i Infotech,

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hi to all,i have a question on static block. i saved below as test.java class test extends a { static { System.out.println("test static"); } public static void main(String []dfs) { } } class a { static { System.out.println("a static"); } public static void main(String []asdf) { } } o/p as static test static but if i change base class as test class then class test { static { System.out.println("test static"); } public static void main(String []dfs) { } } class a extends test { static { System.out.println("a static"); } public static void main(String []asdf) { } } o/p test static explain me why "a static" wasn't print in second code when it is in derived class

1 Answers  

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Using callable statement how can you pass out parameters, explain with example?

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Does java support function overloading, pointers, structures, unions or linked lists?

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Explain tree set and its features?

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Why is an interface be able to extend more than one interface but a class can’t extend more than one class?

0 Answers  

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String is a immutable objects . it means that string does not change........... But it will be chang......... { String s="kapil"; String s1="raj"; String s=s1; then print(.......) The String has been changed .. how it is possible and why its called immutable objects

7 Answers  

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