doGet(){SomeSingelton.methodOne("urlone");SomeSingelton.methodTwo("urltwo");}//單例實(shí)現(xiàn)省略publicclassSomeSingelton{privateStringurl;publicstaticvoidmethodOne(Stringurl){setUrl(url);//httpgeturl}publicstaticvoidmethodTwo(Stringurl){setUrl(url);//httpgeturl}}會(huì)不會(huì)有線(xiàn)程A設(shè)置了urlone，正準(zhǔn)備執(zhí)行httpget的時(shí)候，線(xiàn)程B設(shè)置成了urltwo。導(dǎo)致urlone的返回值是urltwo的??如果有，為什么？如何避免呢？如果沒(méi)有線(xiàn)程安全問(wèn)題請(qǐng)說(shuō)明原因，感激不盡。