# BigInteger clearBit() Method in Java

Prerequisite: BigInteger Basics

The clearBit() method returns a BigInteger which is used to clear a particular bit position in a BigInteger. The bit at index n of binary representaion of BigInteger will be cleared means converted to zero. Mathematically we can say that it is used to calculate this & ~(1<<n).

Syntax:

`public BigInteger clearBit(int n)`

Parameter: The method takes one parameter n which refers to the index of the bit needed to be cleared.

Return Value: The method returns the BigInteger after clearing the bit position n.

Throws: The method might throw an ArithmeticException when n is negative.

Examples:

```Input: value = 2300, index = 3
Output: 2292
Explanation:
Binary Representation of 2300 = 100011111100
bit at index 3 is 1 so clear the bit at index 3
Now Binary Representation becomes 100011110100
and Decimal equivalent of 100011110100 is 2292

Input: value = 5482549, index = 0
Output: 5482548
```

Below program illustrate the clearBit(index) method of BigInteger().

 `/* ` `*Program Demonstrate clearBit() method of BigInteger  ` `*/` `import` `java.math.*; ` ` `  `public` `class` `GFG { ` ` `  `    ``public` `static` `void` `main(String[] args) ` `    ``{ ` ` `  `        ``// Creating  BigInteger object ` `        ``BigInteger biginteger = ``new` `BigInteger(``"5482549"``); ` ` `  `        ``// Creating an int i for index ` `        ``int` `i = ``0``; ` ` `  `        ``// Call clearBit() method on bigInteger at index i ` `        ``// store the return BigInteger ` `        ``BigInteger changedvalue = biginteger.clearBit(i); ` ` `  `        ``String result = ``"After applying clearbit at index "` `+  ` `        ``i + ``" of "` `+ biginteger+``" New Value is "` `+ changedvalue; ` ` `  `        ``// Print result ` `        ``System.out.println(result); ` `    ``} ` `} `

Output:

```After applying clearbit at index 0 of 5482549 New Value is 5482548
```

Attention reader! Don’t stop learning now. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready.

My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.

Article Tags :
Practice Tags :

Be the First to upvote.

Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.