com.caocms javet 3.1.0 Use code with caution. implementation 'com.caocms:javet:3.1.0' Use code with caution. Step 2: Basic Script Execution
private void setupCalculator() V8Object calculator = new V8Object(runtime);
Typical use cases (with brief examples)
public class CalculatorAddon private V8 runtime;
Because J2V8 bridges the Java Heap and the V8 Heap, developers must be careful to release V8 objects manually to avoid memory leaks. Java Addon V8
class Console public void log(String message) System.out.println("[JS] " + message);
import com.caocms.javet.exceptions.JavetException; import com.caocms.javet.interop.V8Runtime; import com.caocms.javet.interop.V8Host; import com.caocms.javet.values.reference.V8ValueObject; public class V8BridgeDemo // Java class to be exposed to JS public static class JavaLogger public void info(String message) System.out.println("[V8 Interop Log] " + message); public static void main(String[] args) try (V8Runtime v8Runtime = V8Host.getV8Instance().createV8Runtime()) // Create a native V8 object wrapper V8ValueObject v8Object = v8Runtime.createV8ValueObject(); // Bind the Java instance to the global context v8Runtime.getGlobalObject().set("javaLogger", v8Object); // Register the Java object's methods into V8 v8Object.bind(new JavaLogger()); // Execute JS that calls the injected Java method String jsScript = "javaLogger.info('Hello from the V8 Addon container!');"; v8Runtime.getExecutor(jsScript).executeVoid(); // Clean up native reference v8Object.close(); catch (Exception e) e.printStackTrace(); Use code with caution. Production Best Practices and Pitfalls class Console public void log(String message) System
This guide covers everything you need to embed V8 in Java, from the classic J2V8 to modern alternatives like GraalVM and the cutting‑edge Project Detroit. You'll also find practical code examples to get you up and running quickly.
Failure to do so will cause your application's RSS (Resident Set Size) memory footprint to climb uncontrollably, eventually triggering the operating system’s Out-Of-Memory (OOM) killer, even if the JVM heap appears empty. 2. Threading Restrictions Failure to do so will cause your application's