What is the result? public class StringReplace { public static void main(String[] args) { String message = "Hi everyone!"; System.out.println("message = " + message.replace("e", "X")); } }

The correct answer is B. message = Hi XvXryonX! String.replace(char, char) replaces every occurrence of the target character, so all three 'e' characters in "Hi everyone!" become 'X', yielding "Hi XvXryonX!" - making B correct. Why the distractors are wrong: A - replace() returns a new string with substitutions applied; the…

Working With Java Data Types

Question

What is the result?
public class StringReplace {
public static void main(String[] args) {
String message = "Hi everyone!";
System.out.println("message = " + message.replace("e", "X"));
}
}

Options

Amessage = Hi everyone!
Bmessage = Hi XvXryonX!
CA compile time error is produced.
DA runtime error is produced.
Emessage =
Fmessage = Hi Xveryone!

How the community answered

(44 responses)

B
93% (41)
D
2% (1)
F
5% (2)

Explanation

String.replace(char, char) replaces every occurrence of the target character, so all three 'e' characters in "Hi everyone!" become 'X', yielding "Hi XvXryonX!" - making B correct.

Why the distractors are wrong:

A - replace() returns a new string with substitutions applied; the output is not the original.
C/D - There is no syntax or runtime error; replace() is a well-defined, null-safe method on a valid String.
E - replace() never empties a string unless every character matches the target.
F - This would only be true if replace() stopped after the first match, but it doesn't - it replaces all occurrences globally.

Memory tip: Think of String.replace() as "replace all, not one" - unlike regex-based methods where you might limit matches, this method always performs a full sweep of the string from start to finish.

Topics

#String.replace()#String methods#String manipulation#method behavior

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