How to make object serializable in java?

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What are java packages? What's the significance of packages?

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Does isempty check for null?

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What is Hierarchy of exception?

0 Answers   Amdocs,

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What is stringjoiner ?

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Is space a string in java?

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I declared main() method as private. But it still running and displaying the output. Please Answer it . Code Snippet as Below: import java.io.*; class over { private static void main(String[] args) { int high = Integer.MAX_VALUE; int overflow = high + 1; int low = Integer.MIN_VALUE; int underflow = low - 1; System.out.println(high + "\n" +overflow +"\n"+ low +"\n"+underflow); //System.out.println(overflow); //System.out.println(low); //System.out.println(underflow); } }

4 Answers   Cap Gemini,

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How do you check if a string contains only numeric digits?

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What is parameters example?

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What types of index data structures can you have in java?

0 Answers   Tech Mahindra,

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How many classes can any class inherit java?

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Why we override equals() method?

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