Step 6 - How to Embed into Other Software

import javax.script.ScriptEngine;
import javax.script.ScriptException;
import java.util.Map;
import java.util.HashMap;

public class EmbedUseExample {
    public static void main(String[] args) {

        ////////// Preparation of the Vnano Engine: Begin //////////

        // Get the script engine (Vnano Engine) used in the RINPn for calculations.
        ScriptEngine engine = new ScriptEngineManager.getEngineByName("vnano");
        if (engine == null) {
            System.err.println("Script engine loading error");
            return;
        }

        // Set ptions of the script engine (for details, see Settings.txt)
        Map optionMap = new HashMap();
        optionMap.put("EVAL_INT_LITERAL_AS_FLOAT", true);
        optionMap.put("EVAL_ONLY_FLOAT", true);
        optionMap.put("EVAL_ONLY_EXPRESSION", true);
        optionMap.put("UI_MODE", "CUI");      // For CUI applications
        // optionMap.put("UI_MODE", "GUI"); // For GUI applications
        optionMap.put("ACCELERATOR_ENABLED", true);
        optionMap.put("ACCELERATOR_OPTIMIZATION_LEVEL", 0);
        engine.put("___VNANO_OPTION_MAP", optionMap);

        // Set permissions referred from plug-ins supporting permission features.
        Map permissionMap = new HashMap();
        permissionMap.put("DEFAULT", "ASK");   // For asking to users by default
        // permissionMap.put("DEFAULT", "DENY"); // For denying by default
        // (Here add permission items you want to allow, as follows)
        // permissionMap.put("FILE_READ", "ALLOW");
        engine.put("___VNANO_PERMISSION_MAP", permissionMap);

        // Settings for loading libraries/plugins
        engine.put("___VNANO_LIBRARY_LIST_FILE", "lib/VnanoLibraryList.txt");
        engine.put("___VNANO_PLUGIN_LIST_FILE", "plugin/VnanoPluginList.txt");

        ////////// Preparation of the Vnano Engine: End //////////

        // Calculate the value of "1.2 + 3.4" by the script engine, and output
        try{
            String input = "1.2 + 3.4";
            double x = (double) engine.eval(input + ";");
            System.out.println("Output of the Vnano Engine: " + x);
        } catch (ScriptException e) {
            e.printStackTrace();
        }

        // Unload libraries/plugins
        engine.put("___VNANO_COMMAND", "REMOVE_LIBRARY");
        engine.put("___VNANO_COMMAND", "REMOVE_PLUGIN");
    }
}