Java BigInteger to String

In this tutorial, we will see how to convert BigInteger to String in java.

There are many ways to convert BigInteger to String in java.Some of them are:

• Using toString()
• Using String.valueOf()

toString method

We can simply use BigInteger’s toString method to convert BigInteger to String.

package org.arpit.java2blog;

import java.math.BigInteger;

public class BigIntegerToStringMain {

    public static void main(String[] args) {
        BigInteger bigInteger=new BigInteger("25");
        String toStringBigInteger=bigInteger.toString();
        System.out.println(toStringBigInteger);
    }
}

When you run above program, you will get below output:

String’s ValueOf method

We can also use String’s ValueOf() method to convert BigInteger to String but it interanally uses BigInteger’s toString method only, so it is better to use BigInteger’s toString method

package org.arpit.java2blog;

import java.math.BigInteger;

public class BigIntegerToStringMain {

    public static void main(String[] args) {
        BigInteger bigInteger=new BigInteger("43");
        String valueOfBigInteger=String.valueOf(bigInteger);
        System.out.println(valueOfBigInteger);
    }
}

When you run above program, you will get below output:

That’s all about BigInteger to String conversion.