String str = "1\n2";System.out.println(str.replaceAll("\n","--"));System.out.println(str.replaceAll("\\n","--"));System.out.println(str.replaceAll("\\\n","--"));上面3个语句都能替换掉"\n",前2个我还能想的通,就第三个我怎么也想不通,如果说"\\\n",到正则表达式为"\\n",那么"\\\\n"的正则表达式,启不不是和"\\\n"一样,还请各位DX解释下下,谢谢了
System.out.println("pattern: "+p.pattern());输出: pattern: \
e而 1\n2表示的是 1 回车 2
难道是bug?
System.out.println("pattern: "+p.pattern());pattern: \ne
System.out.println("pattern: "+p.pattern());
pattern:
e