Answer Posted / devendra

An int is a primitive. It is not an Object.int variables
are mutable. Unless you mark them final, you can change
their value at any time.
An Integer, is a Object that contains a single int
field.Integers are immutable. If you want to affect the
value of a Integer variable, the only way is to create a
new Integer object and discard the old one.

Converting
// to int i from Integer ii
int i = ii.intValue();

// to Integer ii from int i
Integer ii = new Integer( i );

Does constructor creates the object ?

1043

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What do you understand by the term string pool?

1013

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Describe the Big-O Notation.

1049

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What is subsequence of a string?

1100

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Which oo concept is achieved by using overloading and overriding?

1014

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What is the difference between superclass and subclass?

1178

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What is difference between wait and notify in java?

1145

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Difference between final and effectively final ?

1110

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1052

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1154

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1068

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955

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Explain the usage of this with constructors?

1028

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999

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What is the map interface in java programming?

1021

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