Convert double to String in Java

In this Java core tutorial, we learn how to convert double value into String value in Java via different solutions.

Using String.valueOf() method to convert a double value to String

ConvertDoubleToStringExample1.java

public class ConvertDoubleToStringExample1 {
    public static void main(String[] args) {
        double value1 = 12.0099;
        String value2 = String.valueOf(value1);

        System.out.println("double value: " + value1);
        System.out.println("String value: " + value2);
    }
}

The output is:

double value: 12.0099
String value: 12.0099

Using Double.toString() static method to convert a double value to String

ConvertDoubleToStringExample2.java

public class ConvertDoubleToStringExample2 {
    public static void main(String[] args) {
        double value1 = 12.4567;
        String value2 = Double.toString(value1);

        System.out.println("double value: " + value1);
        System.out.println("String value: " + value2);
    }
}

The output is:

double value: 12.4567
String value: 12.4567

Using Double.toString() method to return a String value from a Double object

ConvertDoubleToStringExample3.java

public class ConvertDoubleToStringExample3 {
    public static void main(String[] args) {
        Double value1 = 79.0009;
        String value2 = value1.toString();

        System.out.println("double value: " + value1);
        System.out.println("String value: " + value2);
    }
}

The output is:

double value: 79.0009
String value: 79.0009

Format double value as String using String.format() method

ConvertDoubleToStringExample4.java

public class ConvertDoubleToStringExample4 {
    public static void main(String[] args) {
        double value1 = 56.99898;
        String value2 = String.format("%.5f", value1);

        System.out.println("double value: " + value1);
        System.out.println("String value: " + value2);
    }
}

The output is:

double value: 56.99898
String value: 56.99898

Format double value as String using DecimalFormat class

ConvertDoubleToStringExample5.java

import java.text.DecimalFormat;

public class ConvertDoubleToStringExample5 {
    public static void main(String[] args) {
        double value1 = 15.090909;
        DecimalFormat decimalFormat = new DecimalFormat("#.######");
        String value2 = decimalFormat.format(value1);

        System.out.println("double value: " + value1);
        System.out.println("String value: " + value2);
    }
}

The output is:

double value: 15.090909
String value: 15.090909

Happy Coding 😊