2021-05-06

遍历文件夹得到最大的和最小的文件

import java.io.File;

public class FileDemo {

public void fileTest() {
    File f = new File("c:\\windows");
    File[] fs = f.listFiles();
    if(null==fs)
    	return;
    long minSize = Integer.MAX_VALUE;
    long maxSize = 0;
    File minFile = null;
    File maxFile = null;
    for (File file : fs) {
        if(file.isDirectory())
            continue;
        if(file.length()>maxSize){
            maxSize = file.length();
            maxFile = file;
        }
        if(file.length()!=0 && file.length()<minSize){
            minSize = file.length();
            minFile = file;
        }
    }
    System.out.printf("最大的文件是%s，其大小是%,d字节%n",maxFile.getAbsoluteFile(),maxFile.length());
    System.out.printf("最小的文件是%s，其大小是%,d字节%n",minFile.getAbsoluteFile(),minFile.length());

}

}