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));
}
}

}