java determines whether the file directory exists: (recommended: java video tutorial)
/** * 判断文件夹是否存在 * @param file */ public void checkDirExists(File file) { if (file.exists()) { if (file.isDirectory()) { LOG.info("目录存在"); } else { LOG.info("同名文件存在, 不能创建"); } } else { LOG.info("目录不存在,创建目录"); file.mkdir(); } } }
exists()
public boolean exists() tests whether the file or directory represented by this abstract pathname exists.
Throws: SecurityException if a security manager exists and its SecurityManager.checkRead(java.lang.String) method denies write access to the file or directory.
isDirectory() in java checks whether an object is a folder. The return value is of boolean type. Returns true if so, false otherwise.
The calling method is: object.isDirectory() without specifying parameters.
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