Try It Yourself - SyntaxStudy Editor

HTML / CSS / JS

import java.io.*;
import java.nio.file.*;

public class TryWithResourcesDemo {

// Custom AutoCloseable
    static class ManagedConnection implements AutoCloseable {
        ManagedConnection(String url) {
            System.out.println("Opening connection to " + url);
        }
        public void query(String sql) {
            System.out.println("Executing: " + sql);
        }
        @Override
        public void close() {
            System.out.println("Connection closed");
        }
    }

static void readFileDemo(String path) {
        // Single resource — automatically closed
        try (BufferedReader reader = new BufferedReader(new FileReader(path))) {
            String line;
            while ((line = reader.readLine()) != null) {
                System.out.println(line);
            }
        } catch (IOException e) {
            System.out.println("Could not read file: " + e.getMessage());
        }
    }

static void multipleResources() {
        // Multiple resources, closed in reverse order
        try (ManagedConnection conn = new ManagedConnection("db://localhost");
             PrintWriter log = new PrintWriter(System.out)) {
            conn.query("SELECT * FROM users");
            log.println("Query completed");
        } catch (Exception e) {
            System.out.println("Error: " + e.getMessage());
        }
        // Both conn and log are closed here automatically
    }

public static void main(String[] args) {
        multipleResources();
        readFileDemo("nonexistent.txt"); // demonstrates catch
    }
}