java中 以“\n”切割字符串

public class App {

    public static void main(String[] args) {
        String str = "123\\n456\\n789\\n";      //字符串"123\n456\n789\n"
        String[] strs = str.split("\\\\n");
        for (String s : strs) {
            System.out.println(s);              //123   456 789
        }
    }

}