Printing Multi-dimensional Arrays

By Akshata Dupare

1. Introduction

2. Main class and main method

3. Create another method for stringArray

4. Another way to print arrays

5. Factory method to print arrays

6. Add two dimensional array

7. Factory method to print arrays

8. Factory method deepToString to print Multiple or 2d arrays

9. Multi-loop to print multi-dimensional array

10. For loop to print multiple or 2d arrays

1.Introduction▲

1.1.Code▲

10:/**
20: * Class Name:  StringArrayPrintExample
30: * Author: Akshata
40: * Date: 2019-11-06
50: * Details: Print multidimensional arrays
60: */

2.Main class and main method▲

2.1.Code▲

70:
80:package xv.training.core.arrayexamples;
120:
130://200 main class and main method
140:public class StringArrayPrintExample {
150:
160:	public static void main(String[] args) {
170:		System.out.println("Programm started\n");
250:
260:		System.out.println("\nprogramm Ended");
270:
280:	}
900:
910:}

2.2.Output▲

Programm started


programm Ended

3.Create another method for stringArray▲

3.1.Code▲

180:
190:		// 300 calling of stringArray
200:		StringArrayPrintExample.stringArray();
290:
300:	// 300 create another method for stringArray
310:	public static void stringArray() {
320:		String[] strings = new String[] { "Hello", "Everyone", "Good", "Morning", "to", "All" };
330:
340:		System.out.println("\nPrint array for String Value ");
350:		for (int i = 0; i < strings.length; i++) {
360:			System.out.println(strings[i]);
370:
380:		}
480:	}

3.2.Output▲

Print array for String Value 
Hello
Everyone
Good
Morning
to
All

4.Another way to print arrays▲

4.1.Code▲

390:		// 400 another way to print arrays
400:		System.out.println("\nfor (ObjectType object : CollectionOfObjects): ");
410:		for (String String : strings) {
420:			System.out.println(String);
430:		}

4.2.Output▲

for (ObjectType object : CollectionOfObjects): 
Hello
Everyone
Good
Morning
to
All

5.Factory method to print arrays▲

5.1.Code▲

90:
100:// 500 import Arrays.toString(...) Factory method to print arrays
110:import java.util.Arrays;
440:
450:		// 500 Arrays.toString(...) Factory method to print arrays
460:		System.out.println("\nFactory method to print arrays: ");
470:		System.out.println(Arrays.toString(strings));

5.2.Output▲

Factory method to print arrays: 
[Hello, Everyone, Good, Morning, to, All]

6.Add two dimensional array▲

6.1.Code▲

210:
220:		// 600 two dimensional array
230:		// this is String array whose members are also String arrays
240:		StringArrayPrintExample.stringArrayOfStringArray();
490:
500:	// 600 two dimensional array
510:	private static void stringArrayOfStringArray() {
520:		String[][] stringArray2d = new String[][] {
530:			{ "Siddhant", "Prashik", "Swara", "Yuven" },
540:			{ "Mohini", "Kanchan" },
550:			{ "Abhijit", "Niraj" } };
880:
890:	}

7.Factory method to print arrays▲

1. Using Arrays.toString(…) Factory method to print Multiple arrays

2. It prints ids of member arrays, not the items

[[Ljava.lang.String;@24d46ca6, [Ljava.lang.String;@4517d9a3,

[Ljava.lang.String;@372f7a8d]

7.1.Code▲

560:
570:		// 700 Arrays.toString(...) Factory method to print Multiple arrays
580:		// it prints ids of member arrays, not the items
590:		// output
600:		// [[Ljava.lang.String;@24d46ca6, [Ljava.lang.String;@4517d9a3,
610:		// [Ljava.lang.String;@372f7a8d]
620:		System.out.println("\nFactory method toString to print arrays: ");
630:		System.out.println(Arrays.toString(stringArray2d));

7.2.Output▲

Factory method toString to print arrays: 
[[Ljava.lang.String;@24d46ca6, [Ljava.lang.String;@4517d9a3, [Ljava.lang.String;@372f7a8d]

8.Factory method deepToString to print Multiple or 2d arrays▲

Now, we use Arrays.deepToString(stringArray2d) method. It prints items of any layer of arrays properly.

8.1.Code▲

640:
650:		// 800 Arrays.toString(...) Factory method to print arrays
660:		// it prints items of membebr arrays also
670:		System.out.println("\nFactory method deepToString to print arrays: ");
680:		System.out.println(Arrays.deepToString(stringArray2d));

8.2.Output▲

Factory method deepToString to print arrays: 
[[Siddhant, Prashik, Swara, Yuven], [Mohini, Kanchan], [Abhijit, Niraj]]

9.multi-loop to print multi-dimensional array▲

9.1.Code▲

690:
700:		// 900 multi-loop to print multi-dimensional array
710:		for (int i = 0; i < stringArray2d.length; i++) {
720:
730:			System.out.println("\nPrinting stringArray2d[" + i + "]:");
740:			for (int j = 0; j < stringArray2d[i].length; j++) {
750:				System.out.println(stringArray2d[i][j]);
760:			}
770:		}

9.2.Output▲

Printing stringArray2d[0]:
Siddhant
Prashik
Swara
Yuven

Printing stringArray2d[1]:
Mohini
Kanchan

Printing stringArray2d[2]:
Abhijit
Niraj

10.For loop to print multiple or 2d arrays▲

10.1.Code▲

780:
790:		// 1000 another for loop
800:		for (String[] strings : stringArray2d) {
810:
820:			System.out.println("\nPrinting array item:");
830:			for (String string : strings) {
840:
850:				System.out.println(string);
860:			}
870:		}

10.2.Output▲

Printing array item:
Siddhant
Prashik
Swara
Yuven

Printing array item:
Mohini
Kanchan

Printing array item:
Abhijit
Niraj