Java Data Type Tutorial - Java BigInteger.bitLength()

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Syntax

BigInteger.bitLength() has the following syntax.

public int bitLength()

Example

In the following code shows how to use BigInteger.bitLength() method.

/*from  w  w w.  j av  a  2 s.co m*/

import java.math.BigInteger;

public class Main {

  public static void main(String[] args) {

    BigInteger bi1 = new BigInteger("7");
    BigInteger bi2 = new BigInteger("-7");

    // perform bitlength operation on bi1, bi2
    int i1 = bi1.bitLength();
    int i2 = bi2.bitLength();

    System.out.println(i1);
    System.out.println(i2);
  }
}

The code above generates the following result.

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