[Solved] What will this code print?String s = "Hello";s = s + " World";System.out.println(s); — Ans: Hello World | Java

Java - Strings and String Handling

What will this code print?

String s = "Hello";
s = s + " World";
System.out.println(s);

AHello

BHello World

CHelloWorld

DCompilation error

Step-by-Step Solution

Solution:

Step 1: Understand string concatenation and reassignment
The + operator joins strings, and s is reassigned to the new combined string.
Step 2: Evaluate the output
"Hello" + " World" results in "Hello World" which is printed.
Final Answer:
Hello World -> Option B
Quick Check:
Concatenation with + adds strings [OK]

Quick Trick: Strings are immutable; + creates new string [OK]

Common Mistakes:

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