java - 按行提取子字符串

Question

我对编程还很陌生，所以请多多包涵。假设我有一个像这样的大字符串。

String story = "This is the first line.\n"
+ "This is the second line.\n"
+ "This is the third line\n"
+ "This is the fourth line.\n"
+ "This is the fifth line.";

我将如何提取第一行、第四行等等？

Answer 1

如果你想避免创建数组，你可以使用Scanner

Scanner scanner = new Scanner(story);
while(scanner.hasNextLine()) {
  System.out.println(scanner.nextLine());
}