Jan 30, 2012 · First, you need to override the toString() method of the Humans object to return a String that represents the contents of an instance of Humans. Next, you'll probably want to print a new line after the inner for loop completes, otherwise you're going to print the entire contents of the entire 2D array on just one line (unless that's what you're ...

Mar 24, 2025 · In this article we cover different methods to print 2D Array. When we print each element of the 2D array we have to iterate each element so the minimum time complexity is O ( N *M ) where N is the number of rows in the matrix and M is the number of columns in the matrix.

Simple and clean way to print a 2D array. System.out.println(Arrays.deepToString(array).replace("], ", "]\n").replace("[[", "[").replace("]]", "]"));

Apr 1, 2014 · In order to create a 2D array in Java, you can create such an array like this: Object testArray = new Object[10][10]; This array is now a 10*10 array with memory allocated for 100 Object references. You can create pointers two Objects with a double for-loop:

Aug 23, 2024 · The Arrays.stream() method can be employed to flatten the 2D array, and then forEach() is used to print the elements. Let’s look into the implementation: int[][] myArray = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9} }; Arrays.stream(myArray) .flatMapToInt(Arrays::stream) .forEach(num -> System.out.print(num + " "));

Nov 25, 2019 · Given a 2d array arr in Java, the task is to print the contents of this 2d array. The first thing that comes to mind is to write a nested for loop, and print each element by arr [i] [j]. For this, we will use deepToString () method of Arrays class in the util package of Java. This method helps us to get the String representation of the array.

Sep 25, 2022 · Here we outline 5 possible methods to Print a 2D array in Java: Simple Traversal using for and while loop. Using deepToString () method of Arrays Class. Using Streams in Java 8. Let us have a look at each of these methods in detail.

Jan 14, 2022 · We know that a two-dimensional array in Java is a single-dimensional array having another single-dimensional array as its elements. We can use the Arrays.toString() method to print string representation of each single-dimensional array in the given two-dimensional array.

Jun 16, 2023 · If you want to print a 2D array in Java, there are 4 easy methods to learn for programmers: One of the best ways to print a 2D array in Java is to simply convert the array to a string. A 2D array can also be imagined to be a collection of …

Apr 15, 2025 · The most common and fundamental way to Java print 2D array is by using nested for loops. This method gives you complete control over the formatting, making it ideal for game boards, matrix manipulations, or any project that requires customized output.