[Solved] Identify the error in this Java program snippet: public class Demo { public static void main(String arg) { System.out.println(arg); } } | Java

Java - Command Line Arguments

Identify the error in this Java program snippet:

public class Demo {
  public static void main(String arg) {
    System.out.println(arg);
  }
}

Amain method parameter should be String[] not String

BMissing return type for main method

CSystem.out.println cannot print String

DClass name should be Main

Step-by-Step Solution

Solution:

Step 1: Check main method parameter
The main method must accept an array of Strings (String[]) to receive command-line arguments.
Step 2: Analyze given code
The parameter is declared as a single String (String arg), which is incorrect.
Final Answer:
main method parameter should be String[] not String -> Option A
Quick Check:
Main method must have String array parameter [OK]

Quick Trick: Main method parameter must be String[] args [OK]

Common Mistakes:

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