java正则表达式，将字符串中\后的第一个字母变成大写

java正则表达式，将字符串中\后的第一个字母变成大写

例子是比较简单，注意的是java中的“\\”意义是：我要插入一个正则表达式的反斜线，所以其后面的字符有特殊有意义。所以普通反斜线应该是"\\\\"

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);