Convert Double Variable to String in Java

public class DoubleToString {
    public static void main(String[] args) {
        double num1 = 21.88;
        String str1 = String.valueOf(num1);
        System.out.println(str1);
    }
}

21.88

In this program, a variable of the type double is converted to a String variable using a String class’ method valueOf(). This is the most common method utilized for the conversion.

public class DoubleToString {
    public static void main(String[] args) {
        double num1 = 8.123;
        String str1 = Double.toString(num1);
        System.out.println(str1);
    }
}

8.123

In this program, double type variables are converted to String type variables using a Double (Java wrapper) class method toString().

public class DoubleToString {
     public static void main(String[] args) {
         double num = 34.16;
         String str = String.format("%f", num);
         System.out.println(str);
     }
 }

34.160000

In this program, double to string variable conversion is taking place with the help of format() method.