BigInteger to a primitive type in Java



 Write a program that extracts the primitive type value from the given BigInteger.

Java program to convert  BigInteger to a primitive type

import java.math.BigInteger;

public class Main {

    public static void main(String[] args) {

        BigInteger nr = BigInteger.valueOf(Long.MAX_VALUE);
               
        long nrLong = nr.longValue();        
        System.out.println(nr + " as long is: " + nrLong);
        
        int nrInt = nr.intValue();
        System.out.println(nr + " as int is: " + nrInt);
        
        short nrShort = nr.shortValue();
        System.out.println(nr + " as short is: " + nrShort);
        
        byte nrByte = nr.byteValue();                                
        System.out.println(nr + " as byte is: " + nrByte);
                
        long nrExactLong = nr.longValueExact(); // ok       
        System.out.println(nr + " as exact long is: " + nrExactLong);
        
    }
    
}

Output:

9223372036854775807 as long is: 9223372036854775807
9223372036854775807 as int is: -1
9223372036854775807 as short is: -1
9223372036854775807 as byte is: -1
9223372036854775807 as exact long is: 9223372036854775807

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