changed the file structure

Code/Steiner/zeroOneNine/.vscode/settings.json

@@ -0,0 +1,7 @@
+{
+    "java.project.sourcePaths": ["src"],
+    "java.project.outputPath": "bin",
+    "java.project.referencedLibraries": [
+        "lib/**/*.jar"
+    ]
+}

Code/Steiner/zeroOneNine/README.md

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+## Getting Started
+
+Welcome to the VS Code Java world. Here is a guideline to help you get started to write Java code in Visual Studio Code.
+
+## Folder Structure
+
+The workspace contains two folders by default, where:
+
+- `src`: the folder to maintain sources
+- `lib`: the folder to maintain dependencies
+
+Meanwhile, the compiled output files will be generated in the `bin` folder by default.
+
+> If you want to customize the folder structure, open `.vscode/settings.json` and update the related settings there.
+
+## Dependency Management
+
+The `JAVA PROJECTS` view allows you to manage your dependencies. More details can be found [here](https://github.com/microsoft/vscode-java-dependency#manage-dependencies).

Code/Steiner/zeroOneNine/src/App.java

@@ -0,0 +1,53 @@
+import java.util.Scanner;
+
+public class App {
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+
+        while (true) {
+            System.out.print("Enter a number between 0 and 9 (or -1 to exit): ");
+            int userInput = scanner.nextInt();
+
+            switch (userInput) {
+                case 0:
+                    System.out.println("Your number is Zero");
+                    break;
+                case 1:
+                    System.out.println("Your number is One");
+                    break;
+                case 2:
+                    System.out.println("Your number is Two");
+                    break;
+                case 3:
+                    System.out.println("Your number is Three");
+                    break;
+                case 4:
+                    System.out.println("Your number is Four");
+                    break;
+                case 5:
+                    System.out.println("Your number is Five");
+                    break;
+                case 6:
+                    System.out.println("Your number is Six");
+                    break;
+                case 7:
+                    System.out.println("Your number is Seven");
+                    break;
+                case 8:
+                    System.out.println("Your number is Eight");
+                    break;
+                case 9:
+                    System.out.println("Your number is Nine");
+                    break;
+                case -1:
+                    System.out.println("Program terminated.");
+                    scanner.close();
+                    System.exit(0);
+                default:
+                    System.out.println("Invalid input. Program terminated.");
+                    scanner.close();
+                    System.exit(0);
+            }
+        }
+    }
+}