what is the size of java class

Could anyone tell me how to find the size of the class given below.

public class Sample {

private int x;
private int y;
private char ch;

public static void main(String[] args) {
    Sample sample = new Sample();
    sample.x = 1;
    sample.y = 2;
    sample.ch = 'a';

}

public void display() {
    System.out.println("Hi everyone");
}

}

please answer asap.

(Knapster)