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import javax.script.Bindings;
import javax.script.ScriptContext;
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.put("a", 1);
engine.put("b", 5);
Bindings bindings = engine.getBindings(ScriptContext.ENGINE_SCOPE);
Object a = bindings.get("a");
Object b = bindings.get("b");
System.out.println("a = " + a);
System.out.println("b = " + b);
Object result = engine.eval("c = a + b;");
System.out.println("a + b = " + result);
}
}
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