# BigInteger negate() Method in Java

Prerequisite: BigInteger Basics
The java.math.BigInteger.negate() method returns a BigInteger whose value is (- this). negate() method will change the singned bit of BigInteger.

Syntax:

`public BigInteger negate()`

Parameters: The method does not accept any parameter.

Return Value: The method returns the operation of (- this).

Examples:

```Input: value = 2300
Output: -2300
Explanation:
Binary signed 2's complement of 2300 = 0000100011111100
Singed bit are 0000
change sing bit to 1111
so negate of 0000100011111100 in signed 2's complement is 1111011100000100
Decimal value = -2300.

Input: value = 567689
Output: -567689
```

Below program illustrates negate() method of BigInteger.

 `/* ` `*Program Demonstrate negate() method of BigInteger  ` `*/` `import` `java.math.*; ` ` `  `public` `class` `GFG { ` ` `  `    ``public` `static` `void` `main(String[] args) ` `    ``{ ` ` `  `        ``// Create  BigInteger object ` `        ``BigInteger biginteger = ``new` `BigInteger(``"2300"``); ` ` `  `        ``// Call negate() method to find -this ` `        ``BigInteger finalvalue = biginteger.negate(); ` `        ``String result = ``"Result of negate operation on "` `+  ` `        ``biginteger + ``" is "` `+ finalvalue; ` ` `  `        ``// Prints result ` `        ``System.out.println(result); ` `    ``} ` `} `

Output:

```Result of negate operation on 2300 is -2300
```

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