Main.java

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/*
 * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
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 *
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 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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/*
 * This source code is provided to illustrate the usage of a given feature
 * or technique and has been deliberately simplified. Additional steps
 * required for a production-quality application, such as security checks,
 * input validation and proper error handling, might not be present in
 * this sample code.
 */
 
 
package com.sun.sample.scriptpad;
 
import javax.script.*;
import java.io.*;
 
public class Main {
    public static void main(String[] args) throws Exception {
 
        // create a ScriptEngineManager
        ScriptEngineManager m = new ScriptEngineManager();
        // get an instance of JavaScript script engine
        ScriptEngine engine = m.getEngineByName("js");
 
        // expose the current script engine as a global variable
        engine.put("engine", engine);
 
        // evaluate few scripts that are bundled in "resources"
        eval(engine, "conc.js");
        eval(engine, "gui.js");
        eval(engine, "scriptpad.js");
        eval(engine, "mm.js");
    }
 
    private static void eval(ScriptEngine engine, String name)
                            throws Exception {
        /*
         * This class is compiled into a jar file. The jar file
         * contains few scripts under /resources URL.
         */
        InputStream is = Main.class.getResourceAsStream("/resources/" + name);
        // current script file name for better error messages
        engine.put(ScriptEngine.FILENAME, name);
        // evaluate the script in the InputStream
        engine.eval(new InputStreamReader(is));
    }
}