Write a Java program to get the file size in bytes, KB, MB. Sample Solution: Java Code: importjava.io.File;publicclassExercise9{publicstaticvoidmain(String[]args){Filefile=newFile("/home/students/test.txt");if(file.exists()){System.out.println(filesize_in_Bytes(file));System.out.print...
下面是一个示例代码: importorg.apache.commons.io.FileUtils;importjava.io.File;importjava.io.IOException;publicclassGetFileSize{publicstaticvoidmain(String[]args){Filefile=newFile("test.txt");try{longfileSize=FileUtils.sizeOf(file);System.out.println("File size in bytes: "+fileSize);}catch(IO...
sizeOf(file); //3 // Display Size FileUtils.byteCountToDisplaySize(2333444l); 1. Check File Size using File.length() To get the size of the file, java.io.File class provides length() a method that returns the file’s length in bytes. We may get SecurityException if the read ...
(in);DataInputStream dis = new DataInputStream(bis);long filesize = dis.readLong();if (filesize > 0){ byte[] bytes = new byte[4*1024]; do { int chunkSize = (int) Math.min(filesize, (long) bytes.length); dis.readFully(bytes, 0, chunkSize); out.write(bytes, 0, chunkSize);...
Path path = Paths.get("file path");byte[] data = Files.readAllBytes(path); 这对于小文件是没有问题的,但是对于稍大一些的文件就会抛出异常 Exception in thread "main"java.lang.OutOfMemoryError: Required array size too large at java.nio.file.Files.readAllBytes(Files.java:3156) ...
IoTrace.fileReadEnd(traceContext, b== -1 ? 0 : 1);//从Path读出b=read0()}returnb; }/*** 从输入流中读取多个字节到byte数组中 * 该方法也是私有本地方法,不对用户开放,只供内部调用。*/privatenativeintreadBytes(byteb[],intoff,intlen)throwsIOException;//调用native方法readBytes(b, 0, b....
{// 创建File对象并指定文件路径Filefile=newFile("path/to/file.txt");// 创建InputStream对象InputStreaminputStream=newFileInputStream(file);// 获取文件大小longfileSize=file.length();// 关闭InputStreaminputStream.close();// 打印文件大小System.out.println("File size in bytes: "+fileSize);}...
Kilobytes = Bytes / 1024 Megabytes = Kilobytes / 1024 Gegabytes = Megabytes / 1024 let’s create a Java method that uses the previous mathematical formulas: privatevoidgetSizeOfFile(String pathname){Filefile=newFile(pathname);if(file.exists()) {// File size in byteslongbytes=file.length()...
Java.Nio.FileNio Assembly: Mono.Android.dll Returns the size of a file (in bytes). C#複製 [Android.Runtime.Register("size","(Ljava/nio/file/Path;)J","", ApiSince=26)]publicstaticlongSize(Java.Nio.FileNio.IPath? path); Parameters ...
TYPE_INT_RGB); int fileSize = getBufferedImageFileSize(image, "jpg"); System.out.println("File size: " + fileSize + " bytes"); } public static int getBufferedImageFileSize(BufferedImage image, String format) throws IOException { ByteArrayOutputStream byteStream = new ByteArrayOutputStream(...