The output will be: Successfully wrote to the file. Run Example » To read the file above, go to the Java Read Files chapter.Exercise? Which method can be used to create a file? isWriteable() canWrite() createNewFile() createFile()Submit Answer »❮...
Learn how to efficiently create and write files in Java using classes like File, FileWriter, and BufferedWriter. Follow best practices for error handling and resource management.
Files.write(Paths.get("app.log"), list, utf8, StandardOpenOption.CREATE, StandardOpenOption.APPEND); // For a single line String Files.write(Paths.get("app.log"), "Hello World".getBytes()); // Create and write to a file in binary format byte[] bytes = {1, 2, 3, 4, 5}; Fil...
importjava.io.File;importjava.io.FileOutputStream;importjava.io.IOException;publicclassWriteFileExample{publicstaticvoidmain(String[] args){Filefile=newFile("c:/newfile.txt");Stringcontent="This is the text content";try(FileOutputStreamfop=newFileOutputStream(file)) {// if file doesn't exists,...
Files. createFile():创建文件。 Files. createDirectory():创建文件夹。 Files. delete():删除一个文件或目录。 Files. copy():复制文件。 Files. move():移动文件。 Files. size():查看文件个数。 Files. read():读取文件。 Files. write():写入文件。
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Files.createDirectories(Path.of(dir));}Path pathFile = Path.of(dir, fileName);if(Files.notExists(pathFile)){ Path pathCreateFile = Files.createFile(pathFile); System.out.println("文件创建: " + pathCreateFile);}boolean isCreated = Files.exists(pathFile);System.out.println("是否已经存在...
System.out.println("Using FileChannel and non-direct buffer ..."); try (FileChannel fileChannel_from = (FileChannel.open(copy_from, EnumSet.of(StandardOpenOption.READ))); FileChannel fileChannel_to = (FileChannel.open(copy_to, EnumSet.of(StandardOpenOption.CREATE_NEW, StandardOpenOption.WRITE))) ...
createDirectory(filePath: String?): Boolean 创建目录 deleteFile 删除文件或目录 deleteFileWithoutExcludeNames(file: File?, vararg excludeDirs: String?) 删除文件或目录, excludeDirs指定名称的一些文件/文件夹不做删除 deleteFilesNotDir 只删除文件,不删除文件夹 readFileText(InputStream/Uri): String? 读取文本...
[easyexcel-2.1.6.jar!/:na]atcom.alibaba.excel.context.WriteContextImpl.createSheet(WriteContextImpl.java:187)~[easyexcel-2.1.6.jar!/:na]atcom.alibaba.excel.context.WriteContextImpl.initSheet(WriteContextImpl.java:167)~[easyexcel-2.1.6.jar!/:na]atcom.alibaba.excel.context.WriteContextImpl....