Java - Wrapper Classes
What does the method
Boolean.valueOf(String s) return when the input string is "true" (case insensitive)?What does the method Boolean.valueOf(String s) return when the input string is "true" (case insensitive)?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Understand Boolean.valueOf(String s) behavior
This method returns a Boolean object, not a primitive boolean.Step 2: Check input "true" case
For input "true" (case insensitive), it returns Boolean.TRUE object.Final Answer:
Boolean object representing true -> Option AQuick Check:
Boolean.valueOf returns Boolean object [OK]
Quick Trick: Boolean.valueOf returns object, not primitive [OK]
Common Mistakes:
- Assuming it returns primitive boolean
- Confusing with parseBoolean method
- Expecting a String return type
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