java讀取檔案路徑、所佔空間大小等檔案訊息，主要是使用FileInputStream類來操作，示例如下：import java.io.File;import java.io.FileInputStream;public class ceshi {public static void main(String[] args) throws Exception {java.io.File localFile = new File("D:\\1.txt");FileInputStream ins = new FileInputStream(localFile);int countLen = ins.available();byte[] m_binArray = new byte[countLen];ins.read(m_binArray);ins.close();System.out.println(localFile.getAbsoluteFile() + " "+ localFile.getFreeSpace());}}執行結果如下：