isDirectory() in java checks whether an object is a folder. The return value is of type boolean. Returns true if so, false otherwise.
The calling method is: object.isDirectory() without specifying parameters. (Recommended Learning: Java Course )
In the disk system of this machine, find a folder, use the File class provision method, list the folder to list the folder The file names and paths of all files in the file, the execution effect is as follows:
The files in the folder whose path is xxx are:
File name: abc.txt
Path name: c:\temp\abc.txt
File name: def.txt
Path name: c:\temp\def.txt
import java.io.File; public class Test1 { public static void main(String[] args) { // 创建File对象 File f = new File(“G:\java”); // 判断File对象是不是目录 if (f.isDirectory()) { String[] files = f.list(); if (null != files && files.length > 0) { // 遍历数组,显示目录中文件列表 for (String file : files) { System.out.println(file); System.out.println("------------"); System.out.println(“文件的路径为” + f.getPath()); } } } } }
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