# Java.math.BigInteger.compareTo() Method

## Description

The java.math.BigInteger.compareTo(BigInteger val) compares this BigInteger with the specified BigInteger. This method is provided in preference to individual methods for each of the six boolean comparison operators (<, ==, >, >=, !=, <=).

The suggested idiom for performing these comparisons is: (x.compareTo(y) <op> 0), where <op> is one of the six comparison operators.

## Declaration

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

```public int compareTo(BigInteger val)
```

## Specified by

compareTo in interface Comparable<BigInteger>.

## Parameters

val − BigInteger to which this BigInteger is to be compared.

## Return Value

This method returns -1, 0 or 1 as this BigInteger is numerically less than, equal to, or greater than val.

NA

## Example

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

```package com.tutorialspoint;

import java.math.*;

public class BigIntegerDemo {

public static void main(String[] args) {

// create 2 BigInteger objects
BigInteger bi1, bi2;

bi1 = new BigInteger("6");
bi2 = new BigInteger("3");

// create int object
int res;

// compare bi1 with bi2
res = bi1.compareTo(bi2);

String str1 = "Both values are equal ";
String str2 = "First Value is greater ";
String str3 = "Second value is greater";

if( res == 0 )
System.out.println( str1 );
else if( res == 1 )
System.out.println( str2 );
else if( res == -1 )
System.out.println( str3 );
}
}
```

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

```First Value is greater
```
java_math_biginteger.htm