# 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()
```

NA

## Return Value

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

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
```

java_math_biginteger.htm

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