import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
 
public class Main {
	public static void main(String[] args) throws Exception {
		ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
		System.out.println(engine.eval("with(JavaImporter(java.util)) { x }"));
		System.out.println(engine.eval("with(JavaImporter(java.util)) { x = 1 }"));
		System.out.println(engine.eval("with(JavaImporter(java.util)) { x }"));
	}
}
 

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