Java Double - valueOf() Method

The java.lang.Double.valueOf() method returns a Double instance representing the specified double value. If a new Double instance is not required, this method should generally be used in preference to the constructor Double(double), as this method is likely to yield significantly better space and time performance by caching frequently requested values.

Syntax

public static Double valueOf(double d)

Parameters

Return Value

Returns a Double instance representing d.

Exception

NA.

Example:

In the example below, the java.lang.Double.valueOf() method returns a Double instance representing the given double value.

import java.lang.*;

public class MyClass {
  public static void main(String[] args) {
    
    //creating double value
    double x = 25.5;

    //creating Double instance
    Double y = Double.valueOf(x);

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

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

The output of the above code will be:

The double value is: 25.5
The Double instance is: 25.5