java：如何将txt文件读取到字符串数组
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java: how to read a txt file to an Array of strings
提问by Enrique San Martín
Hi i want to read a txt file with N lines and the result put it in an Array of strings.
嗨，我想读取一个包含 N 行的 txt 文件，结果将它放入一个字符串数组中。
采纳答案by polygenelubricants
Use a java.util.Scannerand java.util.List.
使用java.util.Scanner和java.util.List。
Scanner sc = new Scanner(new File(filename));
List<String> lines = new ArrayList<String>();
while (sc.hasNextLine()) {
lines.add(sc.nextLine());
}
String[] arr = lines.toArray(new String[0]);
回答by JRL
Have you read the Java tutorial?
你读过Java教程吗？
For example:
例如：
Path file = ...;
InputStream in = null;
try {
in = file.newInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
String line = null;
while ((line = reader.readLine()) != null) {
System.out.println(line);
}
} catch (IOException x) {
System.err.println(x);
} finally {
if (in != null) in.close();
}
回答by Bozho
FileUtils.readLines(new File("/path/filename"));
From apache commons-io
This will get you a Listof String. You can use List.toArray()to convert, but I'd suggest staying with List.
这将让你List的String。您可以使用List.toArray()来转换，但我建议继续使用List.
回答by crazyscot
Set up a BufferedReaderto read from the file, then pick up lines from from the buffer however many times.
设置 aBufferedReader以从文件中读取，然后从缓冲区中多次提取行。
