Reporting
Generate reports for the Log Analyzer: show counts and simple summaries.
Reporting is a free Java Academy lesson on CoddyKit — lesson 3 of 3. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Java Academy learning path, one of 3 lessons in the course, and your progress syncs across the web and the CoddyKit app.
Intro
Reporting means turning counts into readable output for users. It is the final step of the analyzer.
Console report
A report can be as simple as printing counts to the console. Even small summaries help spot issues.
Code: print report
This code prints a basic summary with counts.
public class Main {
public static void main(String[] args) {
int errors = 5;
int warnings = 2;
System.out.println("==== Report ====");
System.out.println("Errors: " + errors);
System.out.println("Warnings: " + warnings);
}
}
Formatting ideas
You can format reports with headings, separators, or even export to files for later use.
Code: write report
This saves a text report to a file named report.txt.
import java.io.*;public class Main {
public static void main(String[] args) {
try (BufferedWriter bw = new BufferedWriter(new FileWriter("report.txt"))) {
bw.write("Errors: 5\\n");
bw.write("Warnings: 2\\n");
System.out.println("Report saved to report.txt");
} catch (IOException e) {
System.out.println("Error: " + e.getMessage());
}
}
}
Code: extended report
A report can list not only counts but also error categories or examples.
public class Main {
public static void main(String[] args) {
String[] sampleErrors = {"NullPointer", "Timeout"};
System.out.println("Error Types:");
for (String e : sampleErrors) {
System.out.println("- " + e);
}
}
}
Reporting check
Quick check: What is the main purpose of the reporting step?
Recap
Recap: Reporting is the final step: print or save results so humans can understand them.
Frequently asked questions
Is the “Reporting” lesson free?
Yes — the full text of “Reporting” is free to read here on the web, and the Java Academy course includes 3 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Java Academy course, upgrade to CoddyKit PRO.
What will I learn in “Reporting”?
Generate reports for the Log Analyzer: show counts and simple summaries. You practise Java Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Java Academy?
No prior experience is required. Java Academy on CoddyKit is structured for beginners through advanced learners; this is — lesson 3 of 3, so you can start here or from the beginning and move at your own pace.
How long does the “Reporting” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Java Academy lesson?
Yes. Every Java Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- Design
- Implementation
- Reporting