Java/Scala BigInteger Pasting

I have a problem with the Java BigInteger class: I can't paste a large value into BigInteger. For example, let's say I want to assign a BigInteger to this number:

26525285981219105863630848482795
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I cannot assign it directly, because the compiler thinks it's an integer:

val bi = 26525285981219105863630848482795 //compile error

But I want it to be a BigInteger. Is there any way to be able to directly paste this into the source code?

If there is no such way, then is there a way in Scala, which has a much easier to use BigInt class?

rtperson's answer is correct from a Java perspective, but in Scala you can do more with scala.BigInts than what you can do with java.math.BigIntegers.

For example:

scala> val a = new BigInteger("26525285981219105863630848482795");
a: java.math.BigInteger = 26525285981219105863630848482795

scala> a + a
:7: error: type mismatch;
found   : java.math.BigInteger
required: String
       a + a

The canonical way in Scala to instantiate a class is to use a factory located in the companion object. When you write Foo(args) in Scala, this is translated to Foo.apply(args), where Foo is a singleton object - the companion object. So to find the ways of constructing BigInts you could have a look at the BigInt object in the Scala library, and specifically at its apply construct.

So, three ways of constructing an BigInt are: passing it an Int, a Long or a String to parse. Example:

scala> val x = BigInt(12)
x: BigInt = 12

scala> val y = BigInt(12331453151315353L)
y: BigInt = 12331453151315353

scala> val z = BigInt("12124120474210912741099712094127124112432")
z: BigInt = 12124120474210912741099712094127124112432

scala> x + y * z
res1: BigInt = 149508023628635151923723925873960750738836935643459768508

Note the nice thing that you can do natural looking arithmetic operations with a BigInt, which is not possible with a BigInteger !

This should work:

BigInteger bigInt = new BigInteger("26525285981219105863630848482795");

BigInteger reads strings and parses them into the correct number. Because of this, you'll want to check out java.text.NumberFormat.

Starting in Scala 3, and improvements brought to numeric literals, you can use the following form:

val big: BigInt = 26525285981219105863630848482795
// 26525285981219105863630848482795

or even:

val big: BigInt = 26_525_285_981_219_105_863_630_848_482_795
// 26525285981219105863630848482795