Example usage for javax.script ScriptEngine put

Introduction

In this page you can find the example usage for javax.script ScriptEngine put.

Prototype

public void put(String key, Object value);

Source Link

Document

Sets a key/value pair in the state of the ScriptEngine that may either create a Java Language Binding to be used in the execution of scripts or be used in some other way, depending on whether the key is reserved.

Usage

From source file:Main.java

public static void main(String[] args) {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("js");
    engine.put("a", 1);
    engine.put("b", 2);
    try {/*  w w w .  j  av a 2s  . c  o m*/
        String expression = "(a + b) > 2";
        Object result = engine.eval(expression);
        System.out.println(expression + " ? " + result);
    } catch (ScriptException se) {
        se.printStackTrace();
    }
}

From source file:Main.java

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);
}

From source file:Main.java

public static void main(String[] args) {
    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;//from www.  j a  v a2s.co  m
    try {
        result = engine.eval("c = aaaa + bbbb;");
        System.out.println("a + b = " + result);
    } catch (ScriptException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

From source file:CompileTest.java

public static void main(String args[]) {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("javascript");
    engine.put("counter", 0);
    if (engine instanceof Compilable) {
        Compilable compEngine = (Compilable) engine;
        try {/*from  w  ww  .j  a va2 s  .  c o m*/
            CompiledScript script = compEngine
                    .compile("function count(){counter=counter+1;return counter;}; count();");
            System.out.println(script.eval());
            System.out.println(script.eval());
            System.out.println(script.eval());
        } catch (ScriptException e) {
            System.err.println(e);
        }
    } else {
        System.err.println("Engine can't compile code");
    }
}

From source file:Main.java

public static void main(String args[]) {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("javascript");
    try {/*w  w w.ja va2s  . c  o m*/
        engine.put("name", "abcde");
        engine.eval("var output = '';for (i = 0; i <= name.length; i++) {"
                + "  output = name.charAt(i)+'-' + output" + "}");
        String name = (String) engine.get("output");
        System.out.println(name);
    } catch (ScriptException e) {
        System.err.println(e);
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    ScriptEngineManager manager = new ScriptEngineManager();
    manager.put("global", "global bindings");

    dumpBindings(manager.getBindings());
    ScriptEngine engine = manager.getEngineByExtension("js");
    engine.put("engine", "engine bindings");

    dumpBindings(engine.getBindings(ScriptContext.GLOBAL_SCOPE));

    dumpBindings(engine.getBindings(ScriptContext.ENGINE_SCOPE));

    Bindings bindings = engine.createBindings();
    bindings.put("engine", "overridden engine bindings");
    bindings.put("bindings", bindings);
    engine.eval("app.dumpBindings (bindings);", bindings);

    ScriptEngine engine2 = manager.getEngineByExtension("js");
    engine2.put("engine2", "engine2 bindings");

    dumpBindings(engine2.getBindings(ScriptContext.GLOBAL_SCOPE));
    dumpBindings(engine2.getBindings(ScriptContext.ENGINE_SCOPE));
    dumpBindings(engine.getBindings(ScriptContext.ENGINE_SCOPE));
}

From source file:Main.java

public static void main(String[] args) throws ScriptException {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("JavaScript");
    Main result = new Main();
    engine.put("result", result);
    String script = "3 + 4; result.setValue(1);";
    engine.eval(script);//ww w  .  j  a  v a  2 s. c om
    int returnedValue = result.getValue();
    System.out.println("Returned value is " + returnedValue);
}

From source file:GetToKnowBindingsAndScopes.java

public static void main(String[] args) {
    ScriptEngineManager manager = new ScriptEngineManager();
    manager.put("global", "global bindings");

    dumpBindings(manager.getBindings());
    ScriptEngine engine = manager.getEngineByExtension("js");
    engine.put("engine", "engine bindings");

    dumpBindings(engine.getBindings(ScriptContext.GLOBAL_SCOPE));

    dumpBindings(engine.getBindings(ScriptContext.ENGINE_SCOPE));

    try {/*from www  . j a  v  a  2  s  .  co  m*/
        Bindings bindings = engine.createBindings();
        bindings.put("engine", "overridden engine bindings");
        bindings.put("app", new GetToKnowBindingsAndScopes());
        bindings.put("bindings", bindings);
        engine.eval("app.dumpBindings (bindings);", bindings);
    } catch (ScriptException se) {
        System.err.println(se.getMessage());
    }

    ScriptEngine engine2 = manager.getEngineByExtension("js");
    engine2.put("engine2", "engine2 bindings");

    dumpBindings(engine2.getBindings(ScriptContext.GLOBAL_SCOPE));
    dumpBindings(engine2.getBindings(ScriptContext.ENGINE_SCOPE));
    dumpBindings(engine.getBindings(ScriptContext.ENGINE_SCOPE));
}

From source file:Main.java

public static void main(String[] args) {
    // Get the Nashorn engine
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("JavaScript");

    String script = "print(msg)";
    try {//  w w  w. ja  v  a2s . co m
        engine.put("msg", "Hello from Java program");
        engine.eval(script);
    } catch (ScriptException e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("JavaScript");

    String script = "print(msg.toUpperCase());print(msg.indexOf('a'))";
    engine.put("msg", "java2s.com");
    engine.eval(script);//w  w w .  j av a 2s  .c  o m
}