Use case
Java Coding Exams
Assess real Java in one controlled workspace — compile and run in a secure sandbox, with no AI assistant and no lost work.
Examination Center is in early access — we're onboarding institutions through our Early Access Program. The information here describes our current platform and direction and may evolve; it is not a contractual commitment.
Built for Java coursework
- An AI-free single-file editor, identical for every student — fair, comparable exams.
- Java compiles and runs in a secure server sandbox — nothing for students to install.
- Program output and compiler messages are shown clearly so students can iterate.
- Live monitoring and integrity evidence (paste, sudden code, similarity) for human review.
- Autosave and session recovery keep large sittings fair and dispute-free.
A sample Java exam task
Write a Java program that reads a list of integers and reports simple statistics. This is the kind of single-file task that runs well in a controlled, AI-free exam: a clear spec, a short starter file, and output students can check as they work.
Your program should:
- Read a line of space-separated integers from standard input.
- Print the count, the sum, and the average (rounded to two decimal places).
- Print the largest and smallest values.
- Handle empty input gracefully by printing
No numbers providedinstead of crashing.
Students compile and run in a secure server sandbox, so there is nothing to install and everyone uses the same Java toolchain. Compiler messages and program output are shown separately, so debugging works just like it would locally. Starter file:
import java.util.Scanner;
public class Stats {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
if (!in.hasNextLine()) {
System.out.println("No numbers provided");
return;
}
String line = in.nextLine().trim();
// TODO: split the line, parse the integers,
// and compute count, sum, average, min, and max.
// TODO: print each result on its own line.
}
}The task is deliberately small and self-contained, so it grades by hand quickly and rewards a student's own reasoning rather than tool assistance.
Related
See C & C++ exams and Python lab exams. Terms: sandboxed execution, AI-free exam.
Get started
Early Access scope: up to 40 students and 1 exam. Indicative pricing only — see pricing or apply for Early Access.
FAQ
Does Examination Center grade or score Java submissions?
No. It is not an autograder and keeps no grade book. It gives every student the same controlled, AI-free Java workspace, runs their code in a secure sandbox, and shows program output and compiler messages. You read the work and grade it in your own workflow, exactly as you do today.
Which Java version and libraries are available during an exam?
Students write standard single-file Java that compiles and runs in a secure server sandbox using the Java standard library — for example, classes like java.util.Scanner, java.util.List, and java.util.Map. The environment is identical for everyone, so no student gets an advantage from a different setup. If your course needs a specific configuration, tell us when you apply for the Early Access Program.
Do students need to install a JDK, an IDE, or any plugins?
No. Everything runs in the browser, and the Java code compiles and runs on our secure server sandbox. There is no JDK to install, no IDE to configure, and no toolchain drift between laptops. That removes the common "my build broke" disputes and gives you fair, comparable exams.
How does the editor support academic integrity for Java exams?
The editor is AI-free with no built-in assistant and no autocomplete, and it is identical for every student. During the exam, instructors get live monitoring plus integrity evidence such as paste events, large or sudden edits, and cross-student code similarity. This is evidence for human review — it never makes automated accusations or verdicts. You decide what it means.
What happens if a student's browser freezes or closes mid-exam?
Their work is protected. Autosave and session recovery mean a frozen tab, a crash, or an accidental close does not lose code. The student can resume the same session, which keeps large sittings fair and helps you settle disputes with a clear record.