摘要:
Replace ASCII codes in Java string with character equivalents String text = "if ACS sent ERROR response and UI should display \u0027R\u0027"; text.rep 阅读全文
摘要:
java.lang.NullPointerException,只要敢自称Java程序员,那对这个异常就再熟悉不过了。为了防止抛出这个异常,我们经常会写出这样的代码:Person person = people.find("John Smith"); if (person != null) { per 阅读全文