Spring笔记和小结（1）(1)

这本书是一个以代码和实战为主的书，全书在构建一个过山车订购系统，体育商店可以用来对它们的过山车进行管理和订购。第一节作者先硬编码了两个有依赖关系的类CommandLineView.java和RentABike.java。我们先看看源代码：

Example 1-1. Bike.java

public class Bike { private String manufacturer; private String model; private int frame; private String serialNo; private double weight; private String status; public Bike(String manufacturer, String model, int frame, String serialNo, double weight, String status) { this.manufacturer = manufacturer; this.model = model; this.frame = frame; this.serialNo = serialNo; this.weight = weight; this.status = status; } public String toString( ) { return "Bike : " + "manufacturer -- " + manufacturer + "n: model -- " + model + "n: frame -- " + frame + "n: serialNo -- " + serialNo + "n: weight -- " + weight + "n: status -- " + status + ".n"; } public String getManufacturer( ) { return manufacturer; } public void setManufacturer(String manufacturer) { this.manufacturer = manufacturer; } public String getModel( ) { return model; } public void setModel(String model) { this.model = model; } public int getFrame( ) { return frame; } public void setFrame(int frame) { this.frame = frame; } public String getSerialNo( ) { return serialNo; } public void setSerialNo(String serialNo) { this.serialNo = serialNo; } public double getWeight( ) { return weight; } public void setWeight(double weight) { this.weight = weight; } public String getStatus( ) { return status; } public void setStatus(String status) { this.status = status; }}


可以看出，Bike.java是一个普通的JAVABEAN，用来表述一个过山车实体，包括制造商，型号，规格，序列号，重量和状态等树型。

Example 1-2. RentABike.java
import java.util.*;public class RentABike { private String storeName; final List bikes = new ArrayList( ); public RentABike(String storeName) { this.storeName = storeName;//商店名 //添加过山车到数组 bikes.add(new Bike("Shimano", "Roadmaster", 20, "11111", 15, "Fair")); bikes.add(new Bike("Cannondale", "F2000 XTR", 18, "22222",12, "Excellent")); bikes.add(new Bike("Trek","6000", 19, "33333", 12.4, "Fair")); } public String toString( ) { return "RentABike: " + storeName; } //得到全部过山车 public List getBikes( ) { return bikes; } //得到某一个序列号的过山车 public Bike getBike(String serialNo) { Iterator iter = bikes.iterator( ); while(iter.hasNext( )) { Bike bike = (Bike)iter.next( ); if(serialNo.equals(bike.getSerialNo( ))) return bike; } return null; }}