5 Different ways to print arrays in java

•  Arrays in java are used to hold similar data types values.
• System.out.print() method does not print values of array.
• In order to print array values we have different ways.
• Normally we use for loop and by using index we will print each element inside array.
• let us see how many ways we can able to print values of array. 

1.Print array in java using for loop

• How to print array in java using for loop?
• Yes we can print arrays elements using for loop.
• Find the length of the array using array.length and take initial value as 0 and repeat until  array.length-1. 
• Then access each index values of an array then print.

#1. Write a program to print array in java using for loop

1. package arraysinterview;
2.  
3. public class PrintArray {
4.  
5.     /**
6.      * How to print java array using for loop
7.      * @author www.instanceofjava.com
8.      */
9.     
10. public static void main(String [] args){
11.         
12.         int[] array = { 12,13,8,34,2,7,9,43,54,21};
13.         
14.         for (int i = 0; i < array.length; i++) {
15.             System.out.println(array[i]);
16.         }
17.         
18. }
19.  
20. }

Output:

1. 12
2. 13
3. 8
4. 34
5. 2
6. 7
7. 9
8. 43
9. 54
10. 21

2. Print string array in java using Enhanced for loop

• From java 1.5 using enhanced for loop also we can print array values.

#2.   How to print string array in java using for each loop

3. Using Arrays.toString(array) method

• By  using Arrays.toString(array) method we can print array values.

#3 Write a program to print array in java using Arrays.toString(array)

1. package arraysinterview;
2. import java.util.Arrays;
3.  
4. public class PrintArray {
5.     /**
6.      * How to print java array using Arrays.toString(array)
7.      * @author www.instanceofjava.com     */
8.  
9.   public static void main(String [] args){
10.         
11.         String[] array = { "hi", "hello", "java"};
12.         
13.         
14.    System.out.println(Arrays.toString(array));
15.                
16.   }
17. }

Output:

1. [hi, hello, java]

4.Using Arrays.deepToString(array) Method

• Arrays,deepToString(array) method added in java 5 with generics and varargs.

#4 Write a program to print array in java using  Arrays.deepToString(array)

1. package arraysinterview;
2. import java.util.Arrays;
3.  
4. public class PrintArray {
5.     /**
6.      * How to print java array using Arrays.deepToString(array)
7.      * @author www.instanceofjava.com     */
8.  
9.   public static void main(String [] args){
10.         
11.         int[][] array = new int[][]{
12.                 {1,2,3},
13.                 {11,12,13},
14.                 {4 ,5,6},
15.                 };
16.         
17.   System.out.println(Arrays.deepToString(array));
18.       
19.                
20.   }
21. }

Output:

1. [[1, 2, 3], [11, 12, 13], [4, 5, 6]]

5.Using Arrays.asList(array) Method

• Arrays,asList(array) method we can print array elements

#5 Write a program to print array in java using  Arrays.asList(array)

1. package arraysinterview;
2. import java.util.Arrays;
3.  
4. public class PrintArray {
5.     /**
6.      * How to print java array using Arrays.asList(array)
7.      * @author www.instanceofjava.com     */
8.  
9.   public static void main(String [] args){
10.         
11.       int[] array ={1,2,3,4,5,6};        
12.      System.out.println(Arrays.asList(array));
13.  
14.      String[] strarray ={"hi","array","print"};
15.       System.out.println(Arrays.asList(strarray));
16.                
17.   }
18. }

Output:

1. [[I@2a139a55]
2. [hi, array, print]