INTERVIEW QUESTIONS MICROSOFT DOTNET DETAILS

Question: What is the difference between a.Equals(b) and a == b?

Answer: a=b is used for assigning the values (rather then comparison) and a==b is for comparison.

Or
a == b is used to compare the references of two objects
a.Equals(b) is used to compare two objects
Or

a equals b -> copies contents of b to a
a == b -> checks if a is equal to b

a=b is used for assigning the values (rather then comparison) and a==b is for comparison.

Or
a == b is used to compare the references of two objects
a.Equals(b) is used to compare two objects
Or

a equals b -> copies contents of b to a
a == b -> checks if a is equal to b
Source: CoolInterview.com

a==b is same as the symbol = used in mathematics Source: CoolInterview.com

a.Equals(b) handles NULL values

a==b does not handle NULL values.It will throw NULL Reference Exception. Source: CoolInterview.com

a==b used to compare the reference of the object

a.equals(b) used to compare the values
For string comparison a.equals(b) is prefered

Source: CoolInterview.com

equal is best b'coz it contain 1 byte memory rather than compare(==)which cover 4 byte memory Source: CoolInterview.com

a==b is used to compare the references of two objects
a.equals(b)is used to compare twoobjects Source: CoolInterview.com

a==b is to compare the references of two objects.
a.equals(b) is used to compare the objects (value of fields within the objects).

ie., If a and b are the objects of a class named class1 which is having two Fields Name and Age, the a.equals(b) will compare the values Name and Age fields value of this two objects.
Source: CoolInterview.com

a==b is used to compare the references of two objects
a.equals(b)is used to compare twoobjects Source: CoolInterview.com

a=b->is for assigning values
a==b->is for comparing Source: CoolInterview.com

a==b can be used for all datatypes where as a.Equals(b) can be used to string .

a==b will produce null reference Exception if either of values is Null
a.Equals(b) will not produce any Exception Source: CoolInterview.com

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