Same chapter3 marksDifficulty: Medium
Write a Java program segment to change the case of every letter of a string s.
String Handling
3 marksDifficulty: Medium
State three differences between the String and the StringBuffer classes.
Original Khojo Papers practice question — not from a past board paper.
Answer
A String object is immutable while a StringBuffer object can be changed in place. StringBuffer provides methods such as append, insert, delete and reverse that String does not. Repeated concatenation with String creates a new object each time and is slow, whereas StringBuffer modifies one object and is efficient.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
StringBuffer is synchronised; StringBuilder is the unsynchronised and faster equivalent.
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