changed the file structure

Code/Steiner/arraysTest/.vscode/settings.json

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

Code/Steiner/arraysTest/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/arraysTest/src/App.java

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+public class App {
+    public static void main(String[] args) throws Exception {
+        int[] numbersForMath = new int[3];
+        numbersForMath[0] = 24;
+        numbersForMath[1] = 56;
+        int sum = calcSum(numbersForMath[0], numbersForMath[1]);
+        System.out.println(sum);
+        System.out.println(numbersForMath[2]);
+    }
+
+    public static int calcSum(int numberOne, int numberTwo) {
+        return numberOne + numberTwo;
+    }
+}