BigDecimal precision() Method in Java

The java.math.BigDecimal.precision() method returns the precision of this BigDecimal. The precision refers to the number of digits in the unscaled value.

Syntax:

public int precision()

Parameters: This method does not accept any parameters.

Return Value: This method returns an integer which denotes the precision of this BigDecimal object.

Examples:

Input : 198.176
Output : 6

Input : 721111.111
Output : 9

Below programs illustrate the java.math.BigDecimal.precision() function in Java:
Program 1:

import java.math.*; 

import java.io.*; 

class GFG { 

    public static void main(String[] args) 

    { 

        // create 2 BigDecimal Objects 

        BigDecimal b1, b2; 

        // Assigning values to b1, b2 

        b1 = new BigDecimal("198.176"); 

        b2 = new BigDecimal("721111.111"); 

        // Display their respective precision 

        System.out.println("The precision of " + b1 + " is " + b1.precision()); 

        System.out.println("The precision of " + b2 + " is " + b2.precision()); 

    } 
}

Output:

The precision of 198.176 is 6
The precision of 721111.111 is 9

Program 2:

// Java program to illustrate 
// precision() Function 

import java.math.*; 

import java.io.*; 

class GFG { 

    public static void main(String[] args) 

    { 

        // Creating a BigDecimal Object 

        BigDecimal num; 

        // Assigning value 0.1 + 0.1 + 0.1 to num 

        num = new BigDecimal("0.1") 

                  .add(new BigDecimal("0.1")) 

                  .add(new BigDecimal("0.1")); 

        // Display the BigDecimal value and its precision 

        System.out.println("The precision of " + num + " is "

        + num.precision()); 

    } 
}