您好我一直在使用缓冲Reader来尝试读取文本文件和打印文本文件有多少行有一个文件。我的代码是这样的......阅读在Java错误
File parent = new File("/Desktop/Test Folder");
File text = new File(parent, "/text.txt");
FileWriter fw;
FileReader fr;
BufferedWriter write;
BufferedReader read;
if (!parent.exists()) {
parent.mkdir();
}
try {
text.createNewFile();
} catch (Exception ex) {
System.err.println("Error creating file");
}
try {
fw = new FileWriter(text);
fr = new FileReader(text);
write = new BufferedWriter(fw);
read = new BufferedReader(fr);
} catch (Exception ex) {
System.err.println("Error trying to write or read file");
}
System.out.println("Writing to file...");
try {
write.write("String number one.\n");
write.write("String number two.\n");
List<String> lines = new LinkedList<String>();
String line = read.readLine();
while (line != null) {
lines.add(line);
line = read.readLine();
}
System.out.printf("Number of lines is %d.\n", lines.size());
write.flush();
write.close();
} catch (Exception ex) {
System.err.println("Error writing to file");
}
当我运行这一点,说有在列表行0元素。任何帮助?我在某个地方犯了一个无用的错误,还是我使用了错误的方法?我是一个业余爱好者,所以我怀疑这个错误是显而易见的。无论如何,任何人都可以给我一些帮助吗?
您需要刷新()在输出之前,你可以从文件中读取它。 – 2012-03-23 21:45:05