1Z0-811 Primitives, Strings and Operators Practice Question
Exhibit
Refer to the exhibit.
public class ConcatTest {
public static void main(String[] args) {
String s = "Result: " + 2 + 3;
System.out.println(s);
}
}What is the output?
⚠ Common exam trap
Oracle often tests the left-to-right associativity of the `+` operator and the implicit conversion to strings when a string operand is present, tricking candidates into thinking the integers are added numerically before concatenation.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Result: 23
The code `System.out.println("Result: " + 2 + 3);` uses string concatenation. In Java, the `+` operator is left-associative, so the expression is evaluated as `("Result: " + 2) + 3`. First, the integer `2` is converted to the string `"2"` and concatenated with `"Result: "` to form `"Result: 2"`. Then, the integer `3` is converted to the string `"3"` and concatenated, producing `"Result: 23"`. Option A is correct because the output is the string `"Result: 23"`.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Result: 23
Why this is correct
String concatenation converts numbers to strings.
- ✗
Result: 2 3
Why it's wrong here
No space.
- ✗
Result: 5
Why it's wrong here
Addition would only occur if numbers were added first.
- ✗
Result: 2+3
Why it's wrong here
Operators are evaluated.
Go deeper
Related to this question
About these practice questions
Courseiva writes every 1Z0-811 question from scratch — 481 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 1Z0-811 practice question is part of Courseiva's free Oracle certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 1Z0-811 exam.