* 判断文件是否存在,不存在就创建 *@paramfile */publicstaticvoidcreateFile(File file){if(file.exists()) { System.out.println("File exists"); }else{ System.out.println("File not exists, create it ...");//getParentFile() 获取
if(!configFile.exists()){ // 创建默认配置文件 createDefaultConfig(); } 条件性创建文件 只有当文件不存在时才创建新文件: 实例 FilelogFile=newFile("application.log"); if(!logFile.exists()){ try{ logFile.createNewFile(); }catch(IOExceptione){ ...
importjava.io.File;importjava.io.FileWriter;importjava.io.IOException;publicclassCreateJavaFile{publicstaticvoidcreateFile(StringfilePath,StringfileName){Filefile=newFile(filePath);if(!file.exists()){file.mkdirs();}try{FileWriterwriter=newFileWriter(filePath+"/"+fileName+".java");writer.write("pu...
File file = new File("D:\\2.txt");// if(file.exists()){ // System.out.println("是否可执行: "+ file.canExecute());// System.out.println("是否可写 : "+ file.canWrite());// System.out.println("是否可读 : "+ file.canRead());// } //2.已设置权限 file.setExecutable(false)...
importjava.io.File;importjava.io.IOException;publicclassCreateFileExample{publicstaticvoidmain(String[]args){Filefile=newFile("test.txt");try{if(file.createNewFile()){System.out.println("File created successfully.");}else{System.out.println("File already exists.");}}catch(IOExceptione){System....
File dir = new File("d:\\test_dir");Main.judeDirExists(dir);} // 判断文件是否存在 public static void judeFileExists(File file) { if (file.exists()) { System.out.println("file exists");} else { System.out.println("file not exists, create it ...");try { file....
Files.createFile(Path path):创建文件。 Files.delete(Path path):删除文件或目录(如果为空)。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 Path newFile = Paths.get("/home/user/newfile.txt"); Files.createFile(newFile); Files.delete(newFile); 2.2 文件读写 Files.write(Path path, byte...
// 初始化数据库 public void initDatabase() { // 创建表 String sql = "CREATE TABLE IF NOT EXISTS upload (" + "id INT PRIMARY KEY, " + "total LONG, " + "uploaded LONG)"; jdbcTemplate.execute(sql); // 初始化数据 for (int i = 0; i < numThreads; i++) { String sql2 = ...
Returns the pathname string of this abstract pathname's parent, or null if this pathname does not name a parent directory. FilegetParentFile() Returns the abstract pathname of this abstract pathname's parent, or null if this pathname does not name a parent directory. StringgetPath() Converts...
2. 计算文件或文件夹的大小👉FileSizeUtils.kt①获取指定文件/文件夹大小(Get the size of the specified file folder)@Throws(Exception::class) fun getFolderSize(file: File?): Long { var size = 0L if (file == null || !file.exists()) return size val files = file.listFiles() if (...