我正在使用缓冲读取器从文本文件中一次抓取一行.我也试图使用跟踪整数从文本文件中获取行号.不幸的是BufferedReader正在跳过空行(只有/ n或回车).
示例代码：
int lineNumber = 0;
while ((s = br.readLine()) != null) {
this.charSequence.add(s,++lineNumber);
}
解决方法
我无法重现你声称BufferedReader跳过空行;它应该没有.
以下是显示空行不仅仅被跳过的片段.
String text = "line1\n\n\nline4";
BufferedReader br = new BufferedReader(new StringReader(text));
String line;
int lineNumber = 0;
while ((line = br.readLine()) != null) {
System.out.printf("%04d: %s%n",++lineNumber,line);
}
String text = "line1\n\n\nline4";
LineNumberReader lnr = new LineNumberReader(new StringReader(text));
String line;
while ((line = lnr.readLine()) != null) {
System.out.printf("%04d: %s%n",lnr.getLineNumber(),line);
}
String text = "line1\n\n\nline4";
Scanner sc = new Scanner(text);
int lineNumber = 0;
while (sc.hasNextLine()) {
System.out.printf("%04d: %s%n",sc.nextLine());
}
0001: line1 0002: 0003: 0004: line4
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