Convert a Double Array to String in Java

Declaration :

public static String toString(double[] a)

1	public static String toString(double[] a)

Explanation :

Purpose	The java.util.Arrays.toString(double[]) method returns a string representation of the contents of the specified double array. The string representation consists of a list of the array’s elements enclosed in square brackets (“[]”). Adjacent elements are separated by the characters ” ” (a comma followed by a space).
Parameters	a ===> This is the array whose string representation to return.
Return Value	This method returns a string representation of a.
Exception	NA

Java Program : Example

Below example will explain java.util.Arrays.toString() method.

package com.c4learn;
import java.util.Arrays;
public class ArrayDemo {
	public static void main(String[] args) {
		// Initialize double array
		double[] arrD = new double[] { 10.5, 20.5, 30.5 };
		// Print the double array
		System.out.println("The array is:");
		for (double num : arrD) {
			System.out.println("Element value is " + num);
		}
		System.out.println("\nString Representation:");
		System.out.println(Arrays.toString(arrD));
	}
}

package com.c4learn;

import java.util.Arrays;

public class ArrayDemo {

public static void main(String[] args) {

// Initialize double array

double[] arrD = new double[] { 10.5, 20.5, 30.5 };

// Print the double array

System.out.println("The array is:");

for (double num : arrD) {

System.out.println("Element value is " + num);

}

System.out.println("\nString Representation:");

System.out.println(Arrays.toString(arrD));

}

Output of Program :

The array is:
Element value is 10.5
Element value is 20.5
Element value is 30.5
String Representation:
[10.5, 20.5, 30.5]

The array is:

Element value is 10.5

Element value is 20.5

Element value is 30.5

String Representation:

[10.5, 20.5, 30.5]

Table of Content