Command Line Arguments
🧾 Command Line Arguments in Java Command Line Arguments allow users to pass input parameters to the program when it is executed, enabling dynamic behavior without changing code. 🧠 Concept Java’s main() method accepts an array of String arguments: public static void main(String[] args) args holds the command line values as strings. args[0], args[1], etc. refer to individual arguments. 🧪 Example public class CmdArgs { public static void main(String[] args) { System.out.println("Number of arguments: " + args.length); for (int i = 0; i < args.length; i++) { System.out.println("Arg " + i + ": " + args[i]); } } } 🔹 Running the program: java CmdArgs Alice Bob 🔹 Output: Number of arguments: 2 Arg 0: Alice Arg 1: Bob ⚠️ Notes All inputs are read as String. You must parse them (e.g., Integer.parseInt()) if needed. Handle cases when arguments are missing to avoid ArrayIndexOutOfBoundsException. 🔗 Related Notes Input Output Statements Features of Java