Given a Double value in Java, the task is to convert this double value to string type.
Examples:
Input: 1.0 Output: "1.0" Input: 3.14 Output: "3.14"
Approach 1: (Using + operator)
One method is to create a string variable and then append the double value to the string variable. This will directly convert the double value to string and add it in the string variable.
Below is the implementation of the above approach:
Example 1:
// Java Program to convert double value to String value  class GFG {      // Function to convert double value to String value    public static String    convertDoubleToString(double doubleValue)    {          // Convert double value to String value        // using + operator method        String stringValue = "" + doubleValue;          return (stringValue);    }      // Driver code    public static void main(String[] args)    {          // The double value        double doubleValue = 1;          // The expected string value        String stringValue;          // Convert double to string        stringValue            = convertDoubleToString(doubleValue);          // Print the expected string value        System.out.println(            doubleValue            + " after converting into string = "            + stringValue);    }} |
Output:
1.0 after converting into string = 1.0
Approach 2: (Using String.valueOf() method)
The simplest way to do so is using valueOf() method of String class in java.lang package. This method takes the double value to be parsed and returns the value in String type from it.
Syntax:
String.valueOf(doubleValue);
Below is the implementation of the above approach:
Example 1:
// Java Program to convert double value to String value  class GFG {      // Function to convert double value to String value    public static String    convertDoubleToString(double doubleValue)    {          // Convert double value to String value        // using valueOf() method        return String.valueOf(doubleValue);    }      // Driver code    public static void main(String[] args)    {          // The double value        double doubleValue = 1;          // The expected string value        String stringValue;          // Convert double to string        stringValue            = convertDoubleToString(doubleValue);          // Print the expected string value        System.out.println(            doubleValue            + " after converting into string = "            + stringValue);    }} |
Output:
1.0 after converting into string = 1.0
