Java.math.BigInteger.shiftRight() Method

Description

The java.math.BigInteger.shiftRight(int n) returns a BigInteger whose value is (this >> n). Sign extension is performed. The shift distance, n, may be negative, in which case this method performs a left shift. It computes floor(this / 2ⁿ).

Declaration

Following is the declaration for java.math.BigInteger.shiftRight() method.

public BigInteger shiftRight(int n)

Parameters

n − Shift distance, in bits.

Return Value

This method returns a BigInteger object whose value is this >> n.

Exception

ArithmeticException − If the shift distance is Integer.MIN_VALUE.

Example

The following example shows the usage of math.BigInteger.shiftRight() method.

package com.tutorialspoint;

import java.math.*;

public class BigIntegerDemo {

   public static void main(String[] args) {

      // create 3 BigInteger objects
      BigInteger bi1, bi2, bi3;

      bi1 = new BigInteger("4");

      // perform right shift operation on bi1 using 2 and -2
      bi2 = bi1.shiftRight(2);
      bi3 = bi1.shiftRight(-2);

      String str1 = "Right shift on " +bi1+ ", 2 times gives " +bi2;
      String str2 = "Right shift on " +bi1+ ", -2 times gives " +bi3;

      // print bi2, bi3 values
      System.out.println( str1 );
      System.out.println( str2 );
   }
}

Let us compile and run the above program, this will produce the following result −

Right shift on 4, 2 times gives 1
Right shift on 4, -2 times gives 16