public class JavascriptHelper {
	//method to call javascript
	public static final void callJavascriptMethod() {//【java调用javascript方法】
		final String jsCallStr = String.format("JavaHelper.javascriptMethod('%s')", "hello world, from javascript");
		Cocos2dxHelper.runOnGLThread(new Runnable() {
			@Override
			public void run() {
				Cocos2dxJavascriptJavaBridge.evalString(jsCallStr);
			}
		});
	}
	//call by javascript
	public static final String loadJavaMethod(final int no, final String description) {
		return "no="+no+",description="+description;
	}
}

var JavaHelper = JavaHelper||{};
JavaHelper.callClassName = "cn/winfirm/tools/JavascriptHelper";

JavaHelper.javascriptMethod=function(param) {
	cc.log(param); // "hello world, javascript"
}

JavaHelper.callToJava=function() {//【javascript调用java方法】
	var methodName = "loadJavaMethod";
	var signature = "(ILjava/lang/String;)Ljava/lang/String;";
	var param1=30;
	var param2="hello world, from javascript";
	
	var result = jsb.reflection.callStaticMethod(JavaHelper.callClassName, methodName, signature, param1, param2);
	cc.log(result);//"no=30,description=hello world, from javascript"
}

[JAVA]	[signature]  
int		I  
float	F  
boolean	Z  
String	Ljava/lang/String;  
void	V