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String To Double Java

Last Updated : Jul 1, 2023

String To Double Java

In this article we will show you the solution of string to double java, the conversion of Java Strings to double can be accomplished in a number of ways. In this article, we'll look at some of the most common methods of converting java strings into Double primitive data types and Double objects.

The Java programming language supports autoboxing, so you can use Double primitives and Double objects interchangeably.

Mathematical operations can be performed on strings containing double numbers using this method.

Whenever we obtain data from a textfield or textarea, the entered data is returned as a string.

It is necessary to convert string data from double to string when entered data is double. Our method of parsing doubles is Double.parseDouble().

We will now discuss the idea of how to create a string to double in java with an example.

Step By Step Guide On String To Double Java :-

Code 1

public class TalkersCode{
    public static void main(String args[])
    {
        String str = "2023.12244";
        // Converting above string into double type
        Double str1 = new Double(str);
        // print above string as Double type
        System.out.println(str1);
    }
}

Code 2

/**
 * Java Program - Convert String to Double
 */
public class TalkersCode StringToDouble {
 public static void main(String[] args) {
  //a string
  String str = "8.561253652147";
  double n = 0;
  try {
   //convert string to double
   n = Double.parseDouble(str);
  } catch (NumberFormatException e) {
   System.out.println("Check the string. Not a valid double value.");
  } catch (NullPointerException e) {
   System.out.println("TalkersCode Check the string. String is null.");
  }
  System.out.print(n);
 }
}
  1. We start by declaring a public class named "TalkersCode StringToDouble".
  2. As soon as we declare the class, the main method is declared, which is the program's entry point.
  3. After declaring the string variable "str", we give it a value of "8.561253652147".
  4. We declare a double variable "n" and initialize it to 0.
  5. The string is converted into a double using a try-catch block.
  6. Inside the try block, we call the parseDouble() method of the Double class and pass in our string variable "str". The result of this method is then assigned to our double variable "n".
  7. As a result of the parseDouble() method, a warning is printed if the input string is not a double or an exception is thrown if there is a NumberFormatException.
  8. If the parseDouble() method throws a NullPointerException, we catch the exception and print a message indicating that the input string is null.
  9. Finally, we print the value of our double variable "n".
  10. The program ends.

Conclusion :-

As a result, we have successfully learned how to create a string to double in java with an example.

The Java platform provides multiple methods for converting Strings into doubles.

When it comes to doubles, we recommend using Double.parseDouble unless you require a boxed double.

I hope this article on string to double java helps you and the steps and method mentioned above are easy to follow and implement.

Author Image About Pragati

Experienced coding content writer who enjoys breaking down complex concepts in programming languages like Java, Python, C, and C++. Over three years of experience producing interesting and relevant content for a variety of entities. Committed to providing concise and easy-to-understand articles that assist readers in easily understanding technology and industry trends in the world of coding and software development.

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