Datatype to store 20 digit number

java math numbers type-conversion base36
DeepVeen picture DeepVeen · Sep 15, 2014 · Viewed 27.9k times · Source

I have a number of 20 digit, which datatype will support to store this number? I have tried long, double but I 'm getting out of range.

Number = 48565664968483514466

Then I have to convert this number to Base36 to generate the barcode.

Answer

kirti picture kirti · Sep 15, 2014 
BigInteger:

The BigInteger class allocates as much memory as it needs to hold all the bits of data it is asked to hold and also provides operations analogues to all of Java's primitive integer operators and for all relevant methods from java.lang.Math.

Declare it as

BigInteger bi1 =  new BigInteger("12345678900123");

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