namerfactory.java

java设计模式中的简单工厂模式的一个案例代码。

public class NamerFactory {
    //Factory decides which class to return based on
    //presence of a comma
    public Namer getNamer(String entry) {
        //comma determines name order
        int i = entry.indexOf(",");   
        if (i > 0)
            return new LastFirst(entry);
        else
            return new FirstFirst(entry);
    }
}