Explored using 2D arrays

practice_projects/src/Numpad.java

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+public class Numpad {
+
+    public static void main(String[] args){
+        // This project is to show how to use 2D Arrays
+        // a.k.a. Nested arrays (an array of arrays)
+
+        // 2D arrays are useful for storing a matrix of data.
+
+
+        // Remember - Characters are single quotes 'C'
+        char[][] numpad = {{'1', '2', '3'},
+                            {'4', '5', '6'},
+                            {'7', '8', '9'},
+                            {'*', '0', '#'}};
+
+        // We need nested loops to print columns and rows
+        for(char[] row : numpad){
+            for(char number : row){
+                System.out.print(number + " ");
+            }
+            // Between every row add an empty line
+            System.out.println();
+        }
+    }
+}