摘要:
先看3段代码,看了以后就差不多明白了public class Book { private final String name; //required private final String id; //required private final String value; private final String vendor; private final String vendor2; public Book(String name, String id) { this(name, id, ""); } public Book(String name, String 阅读全文
posted @ 2012-03-02 10:29
Tony_Shen
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