[Solved] Identify the error in the following code snippet:StringBuffer sb = new StringBuffer("Test"); sb.insert(5, "ing"); System.out.println(sb); | Java

Java - Strings and String Handling

Identify the error in the following code snippet:

StringBuffer sb = new StringBuffer("Test");
sb.insert(5, "ing");
System.out.println(sb);

AIndexOutOfBoundsException because insert index is invalid

BNullPointerException because sb is not initialized

CCompilation error due to wrong method name

DNo error; output is "Testing"

Step-by-Step Solution

Solution:

Step 1: Check insert index validity
StringBuffer length is 4 ("Test"), but insert index is 5, which is out of bounds.
Step 2: Understand exception thrown
Inserting at index greater than length throws IndexOutOfBoundsException.
Final Answer:
IndexOutOfBoundsException because insert index is invalid -> Option A
Quick Check:
Invalid insert index = B [OK]

Quick Trick: Insert index must be between 0 and length inclusive [OK]

Common Mistakes:

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