Pattern与Matcher的用法问题??????
小弟我刚刚进入java这一行,请问各位同行,Pattern与Matcher这两个类有什么用??一般在什么时候用??
还有以下一段程序是什么意思??什么作用??
Pattern p1 = Pattern.compile("UTF-8");
Matcher m1 = p1.matcher("");
Pattern p2 = Pattern.compile(Name+".html_files/px");
Matcher m2 = p2.matcher("");
String aLine = null;
while ( (aLine = in.readLine()) != null) {
m1.reset(aLine);
String result = m1.replaceAll("GBK");
m2.reset(result);
result = m2.replaceAll("../px.html_files/px");
请各位多多帮忙!!!!!!