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Null keyword
Is null a keyword? if not what is it?
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Access Specifier
What will happen if same access specifier repeats more than once within a class?
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Synchronization in Java
When We should use Synchronization in Java and when we should not?
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Array List Collections
What is Use of declaring an array list object like List list = new ArrayList() rather than creating object like ArrayList arr = new ArrayList();
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Output of Java Program
What is the output of the following program?class A{ public static void main(String[] s) { System.out.println(s[1] + s[2] + s[3]);}}java A 12345Options(i) 1(ii) 12(iii)1234(iv)234(v) Compilation Error
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Restrict a Class
How can we restrict a class so that no instance creation of class possible without declaring the class as Abstract ?
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Convert string object to primitive Integer Type
How can i convert a string object to a primitive Integer type???????Thanks
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Transient and Volatile.
What is the difference between Transient and Volatile. Does volatile variable is serialized and synchronised.
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