Java.math.BigInteger.signum() Method

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Description

The java.math.BigInteger.signum() returns the signum function of this BigInteger.

Declaration

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

public int signum()

Parameters

  • NA

Return Value

This method returns -1, 0 or 1 as the value of this BigInteger is negative, zero or positive.

Exception

  • NA

Example

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

package com.tutorialspoint;

import java.math.*;

public class BigIntegerDemo {

public static void main(String[] args) {

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

	// create 3 int objects
	int i1, i2, i3;

	bi1 = new BigInteger("0");
	bi2 = new BigInteger("10");
	bi3 = new BigInteger("-10");

	// assign signum results of bi1, bi2, bi3 to i1, i2, i3
	i1 = bi1.signum();
	i2 = bi2.signum();
	i3 = bi3.signum();

	String str1 = "Signum function returns " + i1 + " for " +bi1;
	String str2 = "Signum function returns " + i2 + " for " +bi2;
	String str3 = "Signum function returns " + i3 + " for " +bi3;

	// print i1, i2, i3 values
	System.out.println( str1 );
	System.out.println( str2 );
	System.out.println( str3 );
   }
}

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

Signum function returns 0 for 0
Signum function returns 1 for 10
Signum function returns -1 for -10



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