[Solved] What is the output of the following code? StringBuilder sb = new StringBuilder("Code"); sb.append("Test"); sb.delete(0, 4); System.out.println(sb); | Java

Java - Strings and String Handling

What is the output of the following code?

StringBuilder sb = new StringBuilder("Code");
sb.append("Test");
sb.delete(0, 4);
System.out.println(sb);

ACodeTest

BTestCode

CCode

DTest

Step-by-Step Solution

Solution:

Step 1: Append "Test" to "Code"
After append, sb = "CodeTest".
Step 2: Delete characters from index 0 to 4 (exclusive)
Deletes "Code", leaving "Test".
Final Answer:
Test -> Option D
Quick Check:
Delete + append result = Test [OK]

Quick Trick: delete(start, end) removes substring from start to end-1 [OK]

Common Mistakes:

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