🧩A 2D array is an array of arrays, representing data in rows and columns.
🔑To declare a 2D array in Java, use two sets of square brackets after the data type.
🚀Assign values to a 2D array by specifying the row and column indices.
🔍Use nested for loops to iterate over all elements of a 2D array.
🔄You can initialize a 2D array directly with values during declaration for convenience.
What is a 2D array?
—A 2D array is an array of arrays, used to store and manipulate data in rows and columns.
How to declare a 2D array in Java?
—To declare a 2D array in Java, use the data type followed by two sets of square brackets.
How to assign values to a 2D array?
—Assign values to a 2D array by specifying the row and column indices.
How to display elements of a 2D array?
—Use nested for loops to iterate over all elements of a 2D array and display them.
Can a 2D array be initialized directly with values?
—Yes, you can initialize a 2D array directly with values during declaration.
00:03Introduction to 2D arrays in Java.
00:31Declaring and allocating memory for a 2D array.
01:20Assigning values to elements of a 2D array.
03:18Displaying all elements of a 2D array using nested for loops.
05:40Alternative way to initialize a 2D array during declaration.
