java正則表達式，將字符串中\后的第一個字母變成大寫

java正則表達式，將字符串中\后的第一個字母變成大寫

例子是比較簡單，注意的是java中的“\\”意義是：我要插入一個正則表達式的反斜線，所以其后面的字符有特殊有意義。所以普通反斜線應該是"\\\\"

String in = "\\a\\bnf\\fv";
System.out.println("in is= " + in);
StringBuffer sb = new StringBuffer();
Pattern p = Pattern.compile("\\\\[a-z|A-Z]");
Matcher m = p.matcher(in);
while (m.find())
{ // Find each match in turn; String can't do this.
//String name = m.group(1); // Access a submatch group; String can't do this.
m.appendReplacement(sb, "\\" + m.group().toUpperCase());
System.out.println("m.group() is= " + m.group());
}
m.appendTail(sb);
System.out.println("sb is= " + sb);