[Solved] Identify the error in the following Java code snippet:public class Test { public static void main(String[] args) { String s; System.out.println(s.length()); } } | Java

Java - Memory Management Basics

Identify the error in the following Java code snippet:

public class Test {
  public static void main(String[] args) {
    String s;
    System.out.println(s.length());
  }
}

AString class does not have length() method

BVariable 's' is not initialized before use

CCannot print inside main method

DNo error, code runs fine

Step-by-Step Solution

Solution:

Step 1: Check variable declaration
Variable 's' is declared but not initialized.
Step 2: Analyze usage
Calling s.length() on uninitialized variable causes compile-time error.
Step 3: Confirm String methods
String class has length() method, so String class does not have length() method is incorrect.
Final Answer:
Variable 's' is not initialized before use -> Option B
Quick Check:
Local variables must be initialized before use [OK]

Quick Trick: Initialize local variables before use [OK]

Common Mistakes:

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