利用File获取磁盘信息

import java.io.File; public class FileTest {    public static void main(String[] args) {       //获取盘符的File数组       File[] roots = File.listRoots();       System.out.println("磁盘名称\t总空间\t剩余空间\t使用空间");       for(File f:roots){           System.out.print(f.getAbsolutePath());           long ts = f.getTotalSpace()/1024/1024/1024;           long fs = f.getFreeSpace()/1024/1024/1024;           System.out.printf("\t%3d GB",ts);           System.out.printf("\t%3d GB",fs);           System.out.printf("\t%3d GB\n",(ts-fs));       }    }}