A piece of code teaches you how to delete files in JAVA

In my project "Knowledge Question and Answer Platform Based on Online Learning", there is a module that involves deleting local resource files.

The java.io.File package is used in this module, where the File class represents a file or folder.

After deleting the file, check whether the folder where the file is located is empty. If it is empty, delete the folder!

The code is as follows:

package test;

import java.io.File;

public class DeleteFile {

	public boolean deleteLocalFile(String address) {
		File file = new File(address);
		if (!file.exists()) {
			System.out.println("删除失败,文件不存在！");
			return false;
		} else if (file.isFile()) {
			if (file.delete()) {
				System.out.println("删除文件成功！");
				deleteDirectory(address);
				return true;
			} else {
				System.out.println("删除文件失败！");
				return false;
			}
		} else {
			System.out.println("Not a file!");
			return false;
		}
	}

	/**
	 * 当目录为空时，删除目录
	 */
	private void deleteDirectory(String address) {
		// 获取文件所在的目录名称
		address = address.substring(0, address.lastIndexOf('/') + 1);
		File dir = new File(address);
		
		// 删除空目录
		String[] dirList = dir.list();
		if (dirList == null) {
			System.out.println("文件夹不存在");
		} else if (dir.list().length > 0) {
			System.out.println("这不是一个空目录，不能删除！");
		} else if (dir.delete()) {
			System.out.println("删除空目录成功！");
		} else {
			System.out.println("删除空目录失败");
		}
	}

	public static void main(String[] args) throws Exception {
		DeleteFile df = new DeleteFile();
		String string = "C:/Users/lenovo/Desktop/test/test.txt";
		df.deleteLocalFile(string);
	}

}

The running results are as follows:

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