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  • java统计指定目录中文件的个数和总的大小

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    统计指定目录中文件的个数和总的大小

    package file;
    import java.io.File;
    import java.util.ArrayList;
    
    public class FileCounter {
        //用于储存找到的每一个文件
        ArrayList<File> fileList;
        //根目录
        File root;
    
        public FileCounter(String pathName) {
            root = new File(pathName);
            fileList = new ArrayList<>();
        }
    
        //递归算法查找文件
        public void searchFiles() {
            File[] files = root.listFiles();
            int length = files.length;
            for (int i = 0; i < length; i++) {
                if (files[i].isDirectory()) {
                    root = files[i];
                    searchFiles();
                } else {
                    fileList.add(files[i]);
                }
            }
        }
    
        //统计文件个数和总的大小
        public void countFiles() {
            long totalSize = 0;
            System.out.println("文件数:" + fileList.size());
            for (int i = 0; i < fileList.size(); i++) {
                totalSize += fileList.get(i).length();//返回由此文件的长度,字节为单位
            }
            System.out.println("文件总大小:" + totalSize);
        }
    
        
        //测试
        public static void main(String[] args) {
            String pathName = "E:\音乐";
            FileCounter counter = new FileCounter(pathName);
            counter.searchFiles();
            counter.countFiles();
        }
    
    }
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  • 原文地址:https://www.cnblogs.com/libin6505/p/10600281.html
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