Java Arrays toString() method example

public static String toString(datatype[] a)

The toString() method returns a string representation of a.

Requires Java 1.5 and up

Below is a java code demonstrates the use of toString() method of Arrays class. The example presented might be simple however it shows the behavior of the toString() method.

package com.javatutorialhq.java.examples;

import java.util.Arrays;

/*
 * A java example source code to demonstrate
 * the use of toString() method of Arrays class
 */

public class ArraysToStringExample {

	public static void main(String[] args) {

		// initialize a new String array
		String[] names = new String[]{
			"Alfred","Beth","Stan"	
		};
		
		// get the String representation of String array
		System.out.println("******Multi dimensional array******");
		System.out.println(Arrays.toString(names));				
		
		// get String representation multi dimensional array		
		int[][] value = new int[2][2];		
		value[0][0] = 1;
		value[0][1] = 2;
		value[1][0] = 3;
		value[1][1] = 4;			
		
		System.out.println("******Multi dimensional array******");
		System.out.println(Arrays.toString(value));
		
		
	}
}

The above java example source code demonstrates the use of toString() method of Arrays class.We simply declare a new String Array that correspond to student names. Then we printed it using the toString() method which works perfectly fine. However on the latter part we have also initialized a 2 dimensional int array. As you would have noticed, the printing of data will not works the same way as the first one. Instead of printing the string representation of array, we would be getting a String representation of each object inside the array which is in turn to be the hashcode of each elements. If you want to print it better, you can use the deepToString() method.

Below is the sample output when you run the above example.

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