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package com.javapatterns.simplefactory;
public interface FruitIF {
void grow();
void harvest();
void plant();
String color = null;
String name = null;
} |
代码清单1. 接口FruitIF的源代码。这个接口确定了水果类必备的方法:种植plant(),生长grow(), 以及收获harvest()。
package com.javapatterns.simplefactory;
public class Apple implements FruitIF
{
public void grow()
{
log("Apple is growing...");
}
public void harvest()
{
log("Apple has been harvested.");
}
public void plant()
{
log("Apple has been planted.");
}
public static void log(String msg)
{
System.out.println(msg);
}
public int getTreeAge(){ return treeAge; }
public void setTreeAge(int treeAge){ this.treeAge = treeAge; }
private int treeAge;
} |
代码清单2. 类Apple的源代码。萍果是多年生木本植物,因此具备树龄treeAge性质。
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