Int Overflow in Scala-CodePudding

Why Int overflow is occured this code?

[code]

val randomList = List(scala.util.Random.nextInt(), scala.util.Random.nextInt(), scala.util.Random.nextInt(), scala.util.Random.nextInt())
var listSum = 0
for (value <- randomList) {
    listSum  = value
    println("value = "   value)
    println("listSum = "   listSum)
    println("\n")
}
println("sum is "   listSum)

[Result]

value = 2078728151 listSum = 2078728151

value = -1367097617 listSum = 711630534

value = 1543963641 listSum = -2039373121

value = -1351834340 listSum = 903759835

sum is 903759835

randomList: List[Int] = List(2078728151, -1367097617, 1543963641, -1351834340)

listSum: Int = 903759835

CodePudding user response：

In Scala Int is 4 bytes long, so the greatest Integer is 2**(32-1)-1, which happens to be

Int.MaxValue = 2147483647

Any value above that is going to be Int.MinValue = -2147483648 or greater. It is the same in any other language