保留换行符时的修剪字符串

Question

[[String的trim()方法]返回一个除去前导和尾随空格的字符串，该字符串还包括换行符（'\n'）。如何在保持换行符的同时获得trim()功能？

例如："\n this is new line "-> "\nthis is new line"

Answer 1

您可以改用replaceAll

    String str = "\n this is new line ";
    str = str.replaceAll("\n ", "\n").replaceAll(" $", "");

    System.out.println(str);