這表示調(diào)用的方法啊，容易理解的解讀時(shí)：調(diào)用 a 對(duì)象的 b() 方法，獲取一個(gè)返回的對(duì)象，然后用這個(gè)對(duì)象去調(diào)用c()方法。下面我寫了一個(gè)例子：

public?class?A?{
????private?A?a;
????public?static?void?main(String[]?args)?{
????????A?a1?=?new?A();
????????String?str1?=?a1.b().c();
????????//?相當(dāng)于
????????A?a2?=?new?A();
????????A?a3?=?a2.b();
????????String?str2?=?a3.c();
????}
????public?static?A?b(){
????????return?new?A();
????}
????public?static?String?c()?{
????????return?"zz";
????}
}