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import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
public class Main {
public static void main(String[] args) throws Exception {
ScriptEngineManager manager = new ScriptEngineManager();
ScriptEngine engine = manager.getEngineByName("js");
engine.eval("function add (a, b) {c = a + b; return c; }");
Invocable jsInvoke = (Invocable) engine;
Object result1 = jsInvoke.invokeFunction("add", new Object[] { 10, 5 });
System.out.println(result1);
Adder adder = jsInvoke.getInterface(Adder.class);
int result2 = adder.add(10, 5);
System.out.println(result2);
}
}
interface Adder {
int add(int a, int b);
}
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