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1 package com.db4o.f1.chapter3;
2
3 import java.util.*;
4
5 public class Car {
6 private String  model;
7 private Pilot pilot;
8 private List history;
9
10 public Car(String model) {
11 this(model,new ArrayList());
12 }
13
14 public Car(String model,List history) {
15 this.model=model;
16 this.pilot=null;
17 this.history=history;
18 }
19
20 public Pilot getPilot() {
21 return pilot;
22 }
23
24 public void setPilot(Pilot pilot) {
25 this.pilot=pilot;
26 }
27
28 public String getModel() {
29 return model;
30 }
31
32 public List getHistory() {
33 return history;
34 }
35
36 public void snapshot() {
37 history.add(new SensorReadout(poll(),new Date(),this));
38 }
39
40 protected double[] poll() {
41 int factor=history.size()+1;
42 return new double[]{0.1d*factor,0.2d*factor,0.3d*factor};
43 }
44
45 public String toString() {
46 return model+"["+pilot+"]/"+history.size();
47 }
48 } |
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Java API By Example, From Geeks To Geeks.