Given String s = "Hello"; and String t = s;, what happens if you do t = t + " World";? What is the value of s afterwards?

hard📝 Application Q9 of 15

Java - Strings and String Handling

Given String s = "Hello"; and String t = s;, what happens if you do t = t + " World";? What is the value of s afterwards?

Anull

B"Hello World"

C"Hello"

DCompilation error

Step-by-Step Solution

Solution:

Step 1: Understand string immutability and assignment
Strings cannot be changed after creation. t = t + " World" creates a new string and assigns it to t.
Step 2: Check original variable s
s still points to original "Hello" string because strings are immutable and assignment to t does not affect s.
Final Answer:
"Hello" -> Option C
Quick Check:
Strings are immutable; original stays same [OK]

Quick Trick: String variables hold references; original string unchanged [OK]

Common Mistakes:

Master "Strings and String Handling" in Java

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More Java Quizzes