javaでファイル読み込み
import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; public class Main { public static void main(String[] args) { if (args.length < 1) { System.err.println("Please specify a file name."); System.exit(-1); } try (InputStream in = new FileInputStream(args[0])) { byte[] buf = new byte[4096]; int len; while ((len = in.read(buf)) != -1) { System.out.write(buf, 0, len); } } catch (IOException e) { e.printStackTrace(); } } }