Java - Command Line Arguments
Identify the error in the following code snippet:
public class Sample {
public static void main(String args) {
System.out.println(args[0]);
}
}
Identify the error in the following code snippet: public class Sample { public static void main(String args) { System.out.println(args[0]); } }
medium📝 Debug Q6 of 15
Step-by-Step Solution
Solution:
Step 1: Check main method parameter type
The main method must accept a String array, but here it is a single String.Step 2: Understand why args[0] causes error
Since args is a String, args[0] is invalid because indexing a String parameter like an array is not allowed here.Final Answer:
main method parameter should be String[] args -> Option BQuick Check:
Main method args must be String array [OK]
Quick Trick: Main method args must be String[] to access args[0] [OK]
Common Mistakes:
- Using String instead of String[]
- Trying to index a String parameter
- Missing static or public keywords
Master "Command Line Arguments" in Java
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