BigDecimal scale() Method in Java

The java.math.BigDecimal.scale() is an inbuilt method in java that returns the scale of this BigDecimal.

  • For zero or positive value, the scale is the number of digits to the right of the decimal point.
  • For negative value, the unscaled value of the number is multiplied by ten to the power of the negation of the scale.

Syntax:

public int scale()

Parameters: This method does not accepts any parameter.



Return value: This method returns the scale of this BigDecimal object.

Below program illustrates the working of the above mentioned method:

Program 1:

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// Java program to demonstrate the
// scale() method
  
import java.math.*;
  
public class Gfg {
  
    public static void main(String[] args)
    {
  
        BigDecimal b1 = new BigDecimal("456.0");
        BigDecimal b2 = new BigDecimal("-1.456");
  
        // Assign the result of scale on
        // BigDecimal Objects b1, b2 to int objects i1, i2
        int i1 = b1.scale();
        int i2 = b2.scale();
  
        // Print the values of i1, i2;
        System.out.println("The scale of " + b1 + " is " + i1);
        System.out.println("The scale of " + b2 + " is " + i2);
    }
}

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Output:

The scale of 456.0 is 1
The scale of -1.456 is 3

Program 2:

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// Java program to demonstrate the
// scale() method
  
import java.math.*;
  
public class Gfg {
  
    public static void main(String[] args)
    {
  
        BigDecimal b1 = new BigDecimal("745");
        BigDecimal b2 = new BigDecimal("-174");
  
        // Assign the result of scale on
        // BigDecimal Objects b1, b2 to int objects i1, i2
        int i1 = b1.scale();
        int i2 = b2.scale();
  
        // Print the values of i1, i2;
        System.out.println("The scale of " + b1 + " is " + i1);
        System.out.println("The scale of " + b2 + " is " + i2);
    }
}

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Output:

The scale of 745 is 0
The scale of -174 is 0

Reference: https://docs.oracle.com/javase/7/docs/api/java/math/BigDecimal.html#scale()



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