示例代码如下: import java.io.File; public class CheckFolderExists { public static void main(String[] args) { String folderPath = "path/to/folder"; File folder = new File(folderPath); if (folder.exists() && folder.is
在上面的代码中,我们首先创建一个File对象,然后使用exists()方法判断文件夹是否存在,使用isDirectory()方法判断是否为文件夹。根据判断结果输出相应的提示信息。 2. 流程图 flowchart TD start[开始] checkFolderPath[指定文件夹路径] createFileObject[创建File对象] checkExistence{是否存在?} checkDirectory{是否为文件...
下面是一个简单的示例代码,演示了如何使用File类来判断一个文件夹是否存在: importjava.io.File;publicclassCheckFolderExistsExample{publicstaticvoidmain(String[]args){StringfolderPath="/path/to/folder";Filefolder=newFile(folderPath);if(folder.exists()&&folder.isDirectory()){System.out.println("文件夹存...
}//如果 当前路径下 有 jre 返回目录ifexists("./jre") {return"./jre"}//如果 上面都找不到 到系统环境 变量中寻找ifjh := os.Getenv("JAVA_HOME"); jh !=""{//存在 就返回returnfilepath.Join(jh,"jre") }//都找不到 就报错panic("Can not find jre folder!") }//判断 目录是否存在func...
Tests if this folder physically exists on the Store. abstract Message[] expunge() Expunge (permanently remove) messages marked DELETED. void fetch(Message[] msgs, FetchProfile fp) Prefetch the items specified in the FetchProfile for the given Messages. protected void finalize() int getDeleted...
String jmxServerName= "com.dxz.study.TestJmxRmiRegist";//jdkfolder/bin/rmiregistry.exe 9999Registry registry =LocateRegistry.createRegistry(rmiPort); MBeanServer mbs=MBeanServerFactory.createMBeanServer(jmxServerName); System.out.println(mbs);//mbs = MBeanServerFactory.createMBeanServer();//新...
①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 (files.isNullOrEmpty()) return size for (i in ...
This API checks whether an object exists. If the returned HTTP status code is 200, the object exists. If the returned HTTP status code is 404, the object or bucket does n
System.out.printf("%-25s : %s%n","path.getRoot()", path.getRoot());try{if(Files.notExists(path)) {return; }// default, follow symbolic linkSystem.out.printf("%-25s : %s%n","path.toRealPath()", path.toRealPath());// no follow symbolic linkSystem.out.printf("%-25s : %s...
8040930 install install [MSI] Some files left after uninstalled 32bit JRE if 64bit JRE exists 8041553 install install 8u20-b10: Jre can't be installed to folders containing non-ASCII chara 8042080 install install SDK installer can not run on windows zh_CN and ja ...