Java - Command Line Arguments
Why does Java use String[] args in the main method to access command-line arguments instead of a List or other collection?
Why does Java use String[] args in the main method to access command-line arguments instead of a List or other collection?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand JVM and main method requirements
The JVM expects main method to have a fixed signature with String array parameter for command-line arguments.Step 2: Reason why arrays are used
Arrays are simple, fixed-size, and directly supported by JVM at startup, unlike collections which require extra setup.Final Answer:
Because arrays are simple, fixed-size, and directly supported by JVM -> Option BQuick Check:
JVM requires fixed signature with String array for main method [OK]
Quick Trick: JVM requires fixed main method signature with String array [OK]
Common Mistakes:
- Thinking List is unavailable in Java
- Believing main cannot accept objects
- Assuming String[] args is dynamically resizable
Master "Command Line Arguments" in Java
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