java biginteger

1// Primitive int
2int myInt = 10
3BigInteger bigInt = BigInteger.valueOf(myInt);
4// Integer object
5Integer integer = Integer.valueOf(myInt);
6BigInteger bigInt = BigInteger.valueOf(myInteger.intValue());
7bigInt = BigInteger.valueOf(myInteger);		// works too

1import java.math.BigInteger;

1The java.math.BigInteger.compareTo(BigInteger value) method
2Compares this BigInteger with the BigInteger passed as the parameter.
3  
4________________________________________
5import java.math.BigInteger;
6  
7public class GFG {
8  
9    public static void main(String[] args)
10    {
11        // Creating 2 BigInteger objects
12        BigInteger b1, b2;
13  
14        b1 = new BigInteger("321456");
15        b2 = new BigInteger("321456");
16  
17        // apply compareTo() method
18        int comparevalue = b1.compareTo(b2);
19  
20        // print result
21        if (comparevalue == 0) {
22  
23            System.out.println("BigInteger1 "
24                               + b1 + " and BigInteger2 "
25                               + b2 + " are equal");
26        }
27        else if (comparevalue == 1) {
28  
29            System.out.println("BigInteger1 " + b1 + " 
30                is greater than BigInteger2 " + b2);
31        }
32        else {
33  
34            System.out.println("BigInteger1 " + b1 + " 
35                is lesser than BigInteger2 " + b2);
36        }
37    }
38}
39  
40  

1import java.math.BigInteger;
2BigInteger f = new BigInteger("1");