Java Double - parseDouble() Method

The java.lang.Double.parseDouble() method returns a new double initialized to the value represented by the specified String, as performed by the valueOf method of class Double.

Syntax

public static double parseDouble(String s)
                          throws NumberFormatException

Parameters

Return Value

Returns the double value represented by the string argument.

Exception

• Throws NullPointerException, if the string is null.
• Throws NumberFormatException, if the string does not contain a parsable double.

Example:

In the example below, the java.lang.Double.parseDouble() method is used to parse the string argument as a double value.

import java.lang.*;

public class MyClass {
  public static void main(String[] args) {
    
    //creating a string holding double value
    String x = "25.2";

    //creating double value
    double y = Double.parseDouble(x);

    //printing the string
    System.out.println("The string is: " + x); 

    //printing the double value
    System.out.println("The double value is: " + y);   
  }
}

The output of the above code will be:

The string is: 25.2
The double value is: 25.2