2 ways to Convert String to BigDecimal in Java with Examples

In this tutorial, I will be sharing how to convert String to BigDecimal in java with examples. There are two ways to achieve it.

1. Using Constructor of Big Decimal class [Recommended]

2. Using BigDecimal.valueOf() method

Read Also: Convert String to Boolean in Java

1. Using Constructor of Big Decimal

This is the easiest way to convert String to BigDecimal in java. Just use BigDecimal(String) constructor.

BigDecimal obj = new BigDecimal(String);

The above line will do the job. You can find the example below:

import java.math.*;
public class JavaHungry {
    public static void main(String args[]) 
    {
        String str = "123.45";
        // Using BigDecimal(String) constructor
        BigDecimal num = new BigDecimal(str);
        // Printing BigDecimal value 
        System.out.println("Converted String to BigDecimal : " + num);
    }
}

Output:
Converted String to BigDecimal : 123.45

Note: String passed in a constructor should be a valid number otherwise NumberFormatException will be thrown.

2. Using BigDecimal.valueOf() method

Convert String to BigDecimal by using BigDecimal.valueOf(double) method.
It is a two-step process. The first step is to convert the String to Double. The second step is to convert Double to BigDecimal, using BigDecimal.valueOf(double) method. As shown in the example below:

import java.math.*;
public class JavaHungry {
    public static void main(String args[]) 
    {
        String str = "123.45";
        // Converting String to Double
        Double obj = new Double(str);
        // Converting Double to BigDecimal
        BigDecimal num = BigDecimal.valueOf(obj);
        // Printing BigDecimal value 
        System.out.println("Converted String to BigDecimal: " + num);
    }
}

Output:
Converted String to BigDecimal: 123.45

Note: BigDecimal.valueOf(double) is a static method. You do not need to create a BigDecimal object to access it.

That's all for the day. Please mention in comments in case you have any questions related to convert String to BigDecimal in java with examples.

About The Author

Subham Mittal has worked in Oracle for 3 years .
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