Why can't java count?

Question

Java

for (int x = 1; x<=1500000000; x*=10){
            System.out.println(x);
        }

Outputs :
1
10
100
1000
10000
100000
1000000
10000000
100000000
1000000000
1410065408
1215752192
-727379968
13161344912
276447232
-15304

Answer 1

in java, the int type holds 32 bits. This is from -2147483648 to 2147483647

Answer 2

Because int is over.

Answer 3

Because the size of int is finite. Do you want endless? Use BigInteger. And read about additional code and overflow. This is a school course in computer science.