如何从文本文件Java中读取单个单词（或一行）？

要从文本文件中读取行，可以使用以下命令（使用try-with-resources）：

String line;try (    InputStream fis = new FileInputStream("the_file_name");    InputStreamReader isr = new InputStreamReader(fis, Charset.forName("UTF-8"));    BufferedReader br = new BufferedReader(isr);) {    while ((line = br.readLine()) != null) {        // Do your thing with line    }}

同一事物的更紧凑，更易读的版本：

String line;try (BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream("the_file_name"), Charset.forName("UTF-8")))) {    while ((line = br.readLine()) != null) {        // Do your thing with line    }}

要将一行大块成单个单词，可以使用String.split：

while ((line = br.readLine()) != null) {    String[] words = line.split(" ");    // Now you have a String array containing each word in the current line}