利用 Java 计算文本文件中的段落数\n
我们可以通过将文件读入到一个字符串中,然后基于“\r
”模式进行拆分,来读取文件中的段落。请参见以下示例 −
示例
考虑类路径中的以下文本文件。
test.txt
This is Line 1 This is Line 2 This is Line 3 This is Line 4 This is Line 5 This is Line 6 This is Line 7 This is Line 8 This is Line 9 This is Line 10
Tester.java
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
public class Tester {
public static void main(String args[]) throws IOException {
FileUtil fileUtil = new FileUtil();
System.out.println("No. of paragraphs in file: " + fileUtil.getParaCount());
}
}
class FileUtil {
private static final String FILE_PATH = "data.txt";
public static int getParaCount() throws IOException {
File file = new File(FILE_PATH);
FileInputStream fileStream = new FileInputStream(file);
byte[] byteArray = new byte[(int)file.length()];
fileStream.read(byteArray);
String data = new String(byteArray);
String[] paragraphs = data.toString().split("\r
\r
");
return paragraphs.length;
}
}它会产生以下结果 −
输出
No. of paragraphs in file: 5
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