Cannot seem to get this working

So I searched the forums and the net and have to admit I'm hesitant of using a forum for answers but frankly I'm running out of idea's here. I picked up Sams Teach yourself Java 6 in 21 days and I am trying to get the blasted thing set up. Originally it was giving me a error "cannot find symbol" (2 errors) when I attempted to compile it. I changed from using Notepad to using ViM to write the code out again, now I have only 1 error. it reads as follows

VolcanoApplication.java:16: cannot find symbol
symbol : method checkTemperature()
Location: class VolcanoRobot
dante.checkTemperature();
-------^
1 error

It seems to hate that period....
Some quick background----
I am new to programming in Java
I am running Windows 7 Pro
I have already set PATH in my enviroment variables and running jdk version 6
Both .java files are in the same directory.

I have attached Volcano Applications code below

Code :

---

class VolcanoApplication {
	public static void main(String[] arguments) {
		VolcanoRobot dante = new VolcanoRobot();
		dante.status = "exploring";
		dante.speed = 2;
		dante.temperature = 510;
 
		dante.showAttributes();
		System.out.println("Increasing speed to 3.");
		dante.speed = 3;
		dante.showAttributes();
		System.out.println("Changing temperature to 670.");
		dante.temperature = 670;
		dante.showAttributes();
		System.out.println("Checking the temperature.");
		dante.checkTemperature();
		dante.showAttributes();
	}
}

---

Here is the VolcanoRobot.java aswell

Code :

---

class VolcanoRobot {
	String status;
	int speed;
	float temperature;
 
	void checktemperature() {
		if (temperature > 660) {
			status = "returning home";
			speed = 5;
		}
	}
 
	void showAttributes() {
		System.out.println("Status: " + status);
		System.out.println("Speed: " + speed);
		System.out.println("Temperature: " + temperature);
	}
}

---

void checktemperature() , notice the not capitalized "t"

dante.checkTemperature() , notice the capitalized "T"


Woot?

Edit: What I mean ofc, is that poor dante would have more luck with finding the "checktemperature()" method :)

Jesus murphy, thanks a ton can't believe how long I was thinking I set up the enviroment wrong./