Same chapter3 marksDifficulty: Medium
Write a Java program segment to print the first letter of every word of a sentence s with single spaces between words.
String Handling
3 marksDifficulty: Medium
Explain what is meant by saying that String objects in Java are immutable, and name the class to use when a mutable string is needed.
Original Khojo Papers practice question — not from a past board paper.
Answer
An immutable object cannot be changed after it is created; any method that appears to modify a String in fact returns a new String and leaves the original untouched. StringBuffer, or StringBuilder, should be used when the contents must be changed in place.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Immutability is what makes it safe for Java to share identical string literals.
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