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Java Double class parseDouble() method with example

Double class parseDouble() method: Here, we are going to learn about the parseDouble() method of Double class with its syntax and example.
Submitted by Preeti Jain, on September 23, 2019

Double class parseDouble() method

• parseDouble() method is available in java.lang package.
• parseDouble() method is used to return the double value corresponding to the given String or in other words we can say this method is used to convert a string value to double value.
• parseDouble() method is a static method, it is accessible with the class name too and if we try to access the method with the class object then also we will not get an error.
• parseDouble() method may throw a NumberFormatException at the time of conversion from string double,
  NumberFormatException: In this exception, when the string argument does not have parsable double.

Syntax:

    public static double parseDouble(String str);

Parameter(s):

• String str – represents the string value to be parsed.

Return value:

The return type of this method is double, it returns the corresponding double value.

Example:

// Java program to demonstrate the example 
// of parseDouble(String str) method of Double class

public class ParseDoubleOfDoubleClass {
    public static void main(String[] args) {

        // Variables initialization
        String str1 = "100";
        String str2 = "6.7";

        // Object initialization
        Double d1 = new Double(str2);

        // It convert string into double by calling parseDouble() method
        // and store the result in another variable of double type
        double result = d1.parseDouble(str1);

        // Display result
        System.out.println("d1.parseDouble(str1): " + result);
    }
}

Output

d1.parseDouble(str1): 100.0