You can print in simple way.
Use below to print 2D array
int[][] array = new int[rows][columns];
System.out.println(Arrays.deepToString(array));
Use below to print 1D array
int[] array = new int[size];
System.out.println(Arrays.toString(array));
Top answer 1 of 14
254
You can print in simple way.
Use below to print 2D array
int[][] array = new int[rows][columns];
System.out.println(Arrays.deepToString(array));
Use below to print 1D array
int[] array = new int[size];
System.out.println(Arrays.toString(array));
2 of 14
35
I would prefer generally foreach when I don't need making arithmetic operations with their indices.
for (int[] x : array)
{
for (int y : x)
{
System.out.print(y + " ");
}
System.out.println();
}
GeeksforGeeks
geeksforgeeks.org › java › print-2-d-array-matrix-java
Print a 2D Array or Matrix in Java - GeeksforGeeks
March 24, 2025 - // Java program to print the elements of // a 2 D array or matrix using toString() import java.io.*; import java.util.*; // Driver Class class Geeks { public static void print2D(int mat[][]) { // Loop through all rows for (int[] row : mat) // converting each row as string // and then printing in a separate line System.out.println(Arrays.toString(row)); } public static void main(String args[]) throws IOException { int mat[][] = { { 1, 2, 3, 4 }, { 5, 6, 7, 8 }, { 9, 10, 11, 12 } }; print2D(mat); } } ... Example 4: Using Arrays.deepToString(int[][]) converts the 2D array to a string in a single
[Java] Printing out a row in a 2d array
That’s how Java prints arrays. You’ll need to wrap the array in Arrays.toString(array) or alternatively loop over the array printing out results More on reddit.com
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January 7, 2021java - Printing a 2D array - Code Review Stack Exchange
I finished this program to print a 2D array. I got the right output, but I'm not sure if I did what was being asked in the problem below. Can someone please look at the question below and tell me if I miss any part of the question? The part where I got confused was when it said to read in the size of each dimension: package twoDarray; import java... More on codereview.stackexchange.com
How to print a 2-D array with initial values in a table-like ...
Print 2D color array with boxes
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June 6, 2021Videos
Printing a 2 Dimensional Array (Java Tutorial) - YouTube
03:16
Java Tutorial Print 2D Array in Grid Format - YouTube
Java Tutorial Create 2D Array And Print Individual Elements
09:38
Learn Java 2D arrays in 9 minutes! ⬜ - YouTube
01:40
How to Print a 2D Array in Java - Step-by-Step Guide (2025) - YouTube
Baeldung
baeldung.com › home › java › java array › print a java 2d array
Print a Java 2D Array | Baeldung
August 23, 2024 - The most straightforward method involves using nested loops to iterate through the rows and columns of the 2D array. This method is simple and intuitive, making it an excellent choice for basic array printing.
W3Schools
w3schools.com › java › java_arrays_multi.asp
Java Multi-Dimensional Arrays
Java Wrapper Classes Java Generics Java Annotations Java RegEx Java Threads Java Lambda Java Advanced Sorting ... How Tos Add Two Numbers Swap Two Variables Even or Odd Number Reverse a Number Positive or Negative Square Root Area of Rectangle Celsius to Fahrenheit Sum of Digits Check Armstrong Num Random Number Count Words Count Vowels in a String Remove Vowels Count Digits in a String Reverse a String Palindrome Check Check Anagram Convert String to Array Remove Whitespace Count Character Frequency Sum of Array Elements Find Array Average Sort an Array Find Smallest Element Find Largest Element Second Largest Array Min and Max Array Merge Two Arrays Remove Duplicates Find Duplicates Shuffle an Array Factorial of a Number Fibonacci Sequence Find GCD Check Prime Number ArrayList Loop HashMap Loop Loop Through an Enum
Codecademy
codecademy.com › learn › learn-java › modules › java-two-dimensional-arrays › cheatsheet
Learn Java: Two-Dimensional Arrays Cheatsheet | Codecademy
//Given a 2d array called `arr` which stores `int` values ... In Java, initializer lists can be used to quickly give initial values to 2D arrays.
C# Corner
c-sharpcorner.com › article › printing-a-2d-array-in-java-with-code
Printing a 2D Array in Java with Code
January 23, 2025 - public class Print2DArray { public ... row } } } ... Java provides a built-in method called Arrays.deepToString() that can be used to print multi-dimensional arrays easily....
BeginnersBook
beginnersbook.com › 2024 › 06 › how-to-print-2d-array-in-java
How to print 2D Array in Java
June 3, 2024 - You can use Arrays.deepToString() method to print a 2D array. You can simply pass the reference of 2D array as an argument to this method in order to display all the elements. import java.util.Arrays; public class Main { public static void main(String[] args) { int[][] array = { {1, 2, 3}, ...
Medium
alokkumar-17171.medium.com › how-to-print-contents-of-2d-array-properly-without-loop-java-a548d723e396
How to print contents of 2D array properly without loop — Java | by Alok Kumar - Software Engineer - OPEN FOR WORK - | Medium
February 11, 2024 - package com.arrays; import java.util.Arrays; public class SortArray { public static void main(String[] args) { // TODO Auto-generated method stub int[][] arr = {{2, 5, 15},{1, 2, 8},{3, 5, 10},{4,4,20}}; Arrays.sort(arr,(x,y)->{ if(x[1]==y[1]) return x[2]-y[2]; return x[1]-y[1]; }); // Output - [[1, 2, 8], [4, 4, 20], [3, 5, 10], [2, 5, 15]] System.out.println(Arrays.deepToString(arr)); // Output - [[I@6ff3c5b5 System.out.println(arr); } } The above issue occurs not only with 2D array but also with normal array. ... package com.arrays; import java.util.Arrays; public class Print1DArray { public static void main(String[] args) { // TODO Auto-generated method stub int[] arr = {34,12,11,89,42,67}; // Output - [34, 12, 11, 89, 42, 67] System.out.println(Arrays.toString(arr)); // Output - [I@4dc63996 System.out.println(arr); } }
Coderanch
coderanch.com › t › 650514 › java › Printing-Array-String-specific-format
Printing a 2d Array to String in specific format (Beginning Java forum at Coderanch)
May 27, 2015 - Don't call the String array; that is very confusing. Don't call the parameter m. That is a dreadful name. Why are you using System.out. when your method says it returns a String? Make the method return the String and do nothing else, least of all printing. You can always test it with System.out.println(MyArrayClass.toString(myArray)); Why are you using for loops when you can use for‑each loops?
CodeGym
codegym.cc › java blog › java arrays › 2d arrays in java
Java Matrix - 2D Arrays
April 8, 2025 - Here’s another way to print2D arrays in Java using “foreach loop”. This is a special type of loop provided by Java, where the int[]row will loop through each row in the matrix.
FavTutor
favtutor.com › blogs › print-2d-array-in-java
Print a 2D Array or Matrix in Java: 4 Easy Methods (with code)
June 16, 2023 - In 2D arrays, arr.length returns the number of rows it has, and performing the same operation on any one of its indices (for example arr[0].length) will return the number of columns in the array. It’s great that now you know how to print matrices in Java, now you should also learn sorting algorithms in Java.
Quora
quora.com › How-do-I-print-the-most-common-digit-in-a-2D-array-using-Java
How to print the most common digit in a 2D array using Java - Quora
Answer (1 of 4): How would you do it be hand? Pick a small array, 5x5 is large enough, and figure out what you would do to figure it out by hand. What would you keep track of? How would you know which digit to print? There are a whole lot of programming problems that are that easy (or that hard ...
LeetCode
leetcode.com › problems › transpose-matrix
Transpose Matrix - LeetCode
Can you solve this real interview question? Transpose Matrix - Given a 2D integer array matrix, return the transpose of matrix. The transpose of a matrix is the matrix flipped over its main diagonal, switching the matrix's row and column indices. [https://assets.leetcode.com/uploads/2021/02/10/hint_transpose.png] Example 1: Input: matrix = [[1,2,3],[4,5,6],[7,8,9]] Output: [[1,4,7],[2,5,8],[3,6,9]] Example 2: Input: matrix = [[1,2,3],[4,5,6]] Output: [[1,4],[2,5],[3,6]] Constraints: * m == matrix.length * n == matrix[i].length * 1
Medium
medium.com › @amankseth › 2-d-array-in-java-5dc753a41c77
2-D Array Print in Java. Format to print | by Aman Kumar Seth | Medium
September 28, 2024 - But, wait we have something which is called as Arrays.deepToString() method, let’s see how it works: import java.util.Arrays; public class Array2D { public static void main(String[] args) { int[][] arr = { {1, 2, 3}, {4, 5}, {6, 7, 8, 9} }; ...
Educative
educative.io › answers › how-to-print-multi-dimensional-arrays-in-java
How to print multi-dimensional arrays in Java
We need to use the number of nested loops to iterate on each item of an N-dimensional array before printing it. As the number of dimensions increases, the code becomes more complex and harder to maintain. However, there is a cleaner approach for this using the Arrays.toString() and Arrays.deepToString() library methods defined within the java.util.Arrays class.
Reddit
reddit.com › r/learnprogramming › [java] printing out a row in a 2d array
r/learnprogramming on Reddit: [Java] Printing out a row in a 2d array
January 7, 2021 -
Tried printing out the rows in a 2d matrix using this code:
class Main {
public static void main(String args[]) {
int[][]matrix = { {1,2,3},
{4,5,6},
{7,8,9},
{1,2,1} };
for(int[] row: matrix){
System.out.println(row);
}
}
}It doesn't work. I get this on the compiler:
[I@76ed5528 [I@2c7b84de [I@3fee733d [I@5acf9800
What's going on?
W3Schools
w3schools.com › python › numpy › numpy_array_indexing.asp
NumPy Array Indexing
import numpy as np arr = np.array([[1,2,3,4,5], [6,7,8,9,10]]) print('Last element from 2nd dim: ', arr[1, -1]) Try it Yourself » ... If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail: sales@w3schools.com · If you want to report an error, or if you want to make a suggestion, send us an e-mail: help@w3schools.com · HTML Tutorial CSS Tutorial JavaScript Tutorial How To Tutorial SQL Tutorial Python Tutorial W3.CSS Tutorial Bootstrap Tutorial PHP Tutorial Java Tutorial C++ Tutorial jQuery Tutorial
Top answer 1 of 3
2
Coding enhancement
public static int[][] getArray(){
return new int[5][6]; // no need of intermediate object
}
Optimizing speed : never have a computation or an evaluation at each loop, car be very heavy with great number
for(int i = 0, n = array.lenght; i < n ; i++) { ..
as init_array return array you can write directly :
printArray(init_array(getArray()));
Use :
System.getProperty("line.separator");for all OSStringBuilderthen print out :
.
public static void printArray(int[][] array){
String NEWLINE = System.getProperty("line.separator"); // You can put it 'public static' elsewhere
StringBuilder sb = new StringBuilder(); // you can give the size of it between ()
for(int i = 0; i< array.length;i++)
for(int j =0; j< array[i].length;j++)
sb.append(array[i][j])
sb.append(NEWLINE);
}
}
System.out.println(sb.toString());
}
2 of 3
1
You need to read input (from the command line) using the Scanner class for the dimensions of the array. In this line, you chose 5 and 6:
int[][] array = new int[5][6];
Everything looks good except for that method (getArray). In that method, you should read in two numbers from the command line, and use those numbers (instead of 5 and 6) as the dimensions of the array.
C# Corner
c-sharpcorner.com › article › 2d-array-take-input-and-print-output-same
2D array - Take Input and Print Output Same
May 10, 2024 - import java.util.*; // Online Java Compiler // Use this editor to write, compile and run your Java code online public class Main { public static void main(String[] args) { Scanner scn = new Scanner(System.in); int n = scn.nextInt(); int m = scn.nextInt(); int [][] mat = new int [n] [m]; // System.out.println("rows " + mat.length); // System.out.println("column "+ mat[0].length); for (int i =0; i <n; i++) { for (int j =0; j < m ; j++) { mat[i][j]= scn.nextInt(); } // System.out.println(); } for(int i =0; i <n ; i++) { for (int j =0; j < m; j++) { System.out.print(mat[i][j]+" "); } System.out.println(); } } } Reading dimensions of the 2D array. int n = scn.nextInt(); int m = scn.nextInt(); These lines use the nextInt () method of the Scanner class to read two integers entered by the user, which represent the number of rows (n) and the number of columns (m) of the 2D array, respectively.
GeeksforGeeks
geeksforgeeks.org › dsa › introduction-to-arrays-data-structure-and-algorithm-tutorials
Array Introduction - GeeksforGeeks
February 16, 2026 - Java · // Fixed sized array examples int[] arr1 = new int [5]; // Another way (Array creation and // initialization both) int[] arr2 = {1, 2, 3, 4, 5}; Python · # Create a fixed-size list of length 5, # initialized with zeros arr = [0] * 5 # Output the fixed-size list print(arr) C# // Fixed sized array examples int[] arr1 = new int [5]; // Another way (Array creation and // initialization both) int[] arr2 = {1, 2, 3, 4, 5}; 2.