LiveCodeStudio.com User Guide

Free coding. Fast learning. Anywhere.

LiveCodeStudio is a web-based programming environment for Java and C++ with real-time compilation and execution. No installation required - just open your browser and start coding!

Getting Started

1. Visit: Go to LiveCodeStudio.com
2. Choose Language: Select Java or C++ from the dropdown
3. Start Coding: Write your code in the editor
4. Run: Click Compile → Run to execute your program

Interface Overview

Header Section

• Logo & Title: LiveCodeStudio.com branding
• Project Name: Click to rename your project (default: "ProjectName")
• Action Buttons:
  • Learn: Access Java/C++ tutorials and examples
  • Download: Save your project to local computer
  • Upload: Save your project to cloud storage

Editor Section

• Language Selector: Switch between Java and C++
• File Tabs: Manage multiple files in your project
• Add Tab (+): Create new files (use / for folders: src/Main.java)
• Line Numbers: Automatic line numbering
• Code Editor: Write your code with syntax support

Output Section

• Compile Button: Check your code for syntax errors
• Run Button: Execute your program
• Stop Button: Terminate running programs
• Console: View output and provide input for interactive programs

Basic Workflow

1. Writing Code

// Java Example
public class Main {
    public static void main(String[] args) {
        System.out.println("Hello, World!");
    }
}

// C++ Example
#include <iostream>
using namespace std;

int main() {
    cout << "Hello, World!" << endl;
    return 0;
}

2. Compiling

• Click Compile to check for syntax errors
• Fix any compilation errors shown in the output
• Green "Compilation successful!" means your code is ready to run

3. Running Programs

• Click Run to execute your program
• Output appears in the console area
• For programs with input, the system automatically switches to interactive mode

Interactive Programs

Java Interactive Mode

Programs using Scanner automatically enter interactive mode:

import java.util.Scanner;

public class Interactive {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter your name: ");
        String name = scanner.nextLine();
        System.out.println("Hello, " + name + "!");
    }
}

C++ Interactive Mode

Programs using cin, getline() automatically enter interactive mode:

#include <iostream>
#include <string>
using namespace std;

int main() {
    string name;
    cout << "Enter your name: ";
    getline(cin, name);
    cout << "Hello, " << name << "!" << endl;
    return 0;
}

Interactive Mode Features:

• Real-time input/output
• Type responses when prompted
• Press Enter to submit input
• Programs run until completion

Multi-File Projects

Creating Files

1. Click the + button next to file tabs
2. Enter filename (e.g., Calculator.java, utils/Helper.cpp)
3. Use / to create folder structure: src/main/Main.java

File Management

• Double-click tab names to rename files
• Save button: Save current file
• Delete button: Remove current file
• Switch between files by clicking tabs

Project Structure Example

MyProject/
├── Main.java
├── Calculator.java
└── utils/
    └── Helper.java

Advanced Features

C++17 Support

• Structured bindings: auto [x, y] = pair;
• Threading: std::thread
• Modern STL features
• Smart pointers: unique_ptr, shared_ptr

Java Features

• Full Java 17 support
• Object-oriented programming
• Collections framework
• Exception handling
• File I/O operations

Project Management

Downloading Projects

1. Click Download button
2. Save to your local computer with your structure
3. Extract and open in your preferred IDE

Uploading to Cloud

1. Click Upload button
2. Project saves to AWS S3 cloud storage with returned information
3. Get shareable links for collaboration
4. Access from anywhere with the link

Project Naming

• Click the project name field in header
• Enter descriptive name (e.g., "Calculator App")
• Name appears in downloads and cloud uploads

AI Assistant

Accessing Help

1. Click the 🎓 button (bottom right)
2. Chat panel opens with programming assistant
3. Ask questions about Java, C++, programming, etc.

Assistant Features

• Code Help: Explain syntax, fix errors
• Examples: Get sample code for common tasks
• Learning: Tutorials and explanations
• Debugging: Help troubleshoot issues

Sample Questions

• "How do I read user input in Java?"
• "Explain C++ pointers"
• "Show me a sorting algorithm"

Tips & Best Practices

Code Organization

• Use meaningful file and class names
• Organize related code in folders
• Keep main logic in Main.java or main.cpp

Debugging

• Read compilation errors carefully
• Use System.out.println() or cout for debugging
• Test with simple inputs first
• Ask the AI assistant for help

Performance

• Programs have 30-60 second execution limits
• Avoid infinite loops
• Use efficient algorithms for large data

Mobile Usage

• Works on tablets and phones
• Touch-friendly interface
• Responsive design adapts to screen size

Troubleshooting

Common Issues

Compilation Errors:

• Check syntax carefully
• Ensure class names match file names (Java)
• Include necessary headers (C++)

Runtime Errors:

• Check for null pointer exceptions
• Validate array bounds
• Handle division by zero

Interactive Mode Issues:

• Wait for prompts before typing
• Press Enter after each input
• Use the Stop button if program hangs

Getting Help

1. AI Assistant: Click 🎓 for instant help
2. Error Messages: Read carefully for clues
3. Examples: Use Learn button for tutorials
4. Support: Contact support@STEMists.com

Keyboard Shortcuts

• Ctrl+S: Save current file
• Ctrl+Enter: Run program
• Tab: Indent code
• Ctrl+Z: Undo
• Ctrl+Y: Redo

System Requirements

• Browser: Chrome, Firefox, Safari, Edge (latest versions)
• Internet: Stable connection required
• JavaScript: Must be enabled
• Storage: No local installation needed

Privacy & Security

• Code is processed securely on AWS servers
• Projects can be saved to cloud storage
• No personal data required to use
• HTTPS encryption for all communications