01 package trail.jmx;
02
03 import org.jboss.annotation.ejb.Service;
04 import org.jboss.annotation.ejb.Management;
05
06 @Service (objectName="trail:service=calculator")
07 @Management(Calculator.class)
08 public class CalculatorMBean implements Calculator {
09
10 double growthrate;
11
12 public void setGrowthrate (double growthrate) {
13 this.growthrate = growthrate;
14 }
15
16 public double getGrowthrate () {
17 return growthrate;
18 }
19
20 public double calculate (int start, int end, double saving) {
21 double tmp = Math.pow(1. + growthrate / 12., 12. * (end - start) + 1);
22 return saving * 12. * (tmp - 1) / growthrate;
23 }
24
25 // Lifecycle methods
26 public void create() throws Exception {
27 growthrate = 0.08;
28 System.out.println("Calculator - Creating");
29 }
30
31 public void destroy() {
32 System.out.println("Calculator - Destroying");
33 }
34
35 }
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