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In Java, arrays are used to store multiple values of the same type. A 1D array is a linear collection of elements, while a 2D array is a grid-like structure with rows and columns.
Example of a 1D Array
public class OneDArray {public static void main(String[] args) {// Declare and initialize a 1D arrayint[] numbers = {10, 20, 30, 40, 50};// Access and print elementsfor (int i = 0; i < numbers.length; i++) {System.out.println("Element at index " + i + ": " + numbers[i]);}}}Copied!✕CopyExample of a 2D Array
public class TwoDArray {public static void main(String[] args) {// Declare and initialize a 2D arrayint[][] matrix = {{1, 2, 3},{4, 5, 6},{7, 8, 9}};// Access and print elementsfor (int i = 0; i < matrix.length; i++) {for (int j = 0; j < matrix[i].length; j++) {System.out.print(matrix[i][j] + " ");}System.out.println();}}}Copied!✕CopyKey Points
1D Array: Access elements using a single index (array[index]).
2D Array: Access elements using two indices (array[row][column]).
Considerations
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