Editing Comparison of C Sharp and Java (section)

=== Integration of library-defined types ===
C# allows library-defined types to be integrated with existing types and operators by using custom implicit/explicit conversions and operator overloading as illustrated by the following example:
{| style="width:100%;" class="wikitable"
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! style="width:50%;"|Java !! style="width:50%;"| C#
|-
|
<syntaxhighlight lang=Java style="font-size:90%">
var bigNumber =
    new BigInteger("123456789012345678901234567890");

var answer = bigNumber.multiply(BigInteger.valueOf(42));
var square = bigNumber.sqrt();
var sum = bigNumber.add(bigNumber);
</syntaxhighlight>
|
<syntaxhighlight lang="csharp" style="font-size:90%">
var bigNumber =
    BigInteger.Parse("123456789012345678901234567890");

var answer = bigNumber * 42;
var square = bigNumber * bigNumber;
var sum = bigNumber + bigNumber;
</syntaxhighlight>
|}