Problem with a data member(field) in Java and priting it out? how to properly implement?

I want to print out the result of calcWork() in printReport() but I keep getting 0.0 Is there a problem with setting work = this.totalWork;? public class CarnotEngine { public double n = 10; public double R = 4; public double Th = 8; public double Tc =2; public double Va = 4; public double Vb = 3; public double totalWork; public double highTemp, lowTemp; public double efficientcy; public CarnotEngine(double highTemp, double lowTemp ){ this.highTemp = highTemp; this.lowTemp = lowTemp; } public double calcWork(){ double Qh; double work; Qh = (n*R*highTemp)*log(Vb/Va); work =(1-lowTemp/highTemp)*Qh; work = this.totalWork; return work; } public void printReport() { System.out.println("Simulation Result for Carnot Engine"); System.out.println("work done" + totalWork ); public static void main(String[] args) { CarnotEngine carengine = new CarnotEngine(500, 200); carengine.calcWork(); carengine.calcEfficientcy(); carengine.printReport(); } }

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