Java检测插入可移动磁盘实现

Java检测是否插入可移动磁盘，没找到直接实现方法，自己写了个，先记录下来

import java.io.File;public class DiscsUsage implements Runnable {File[] discs = File.listRoots();// 获取可用文件系统根@Overridepublic void run() {// TODO Auto-generated method stubSystem.out.println("系统正在检测可移动磁盘...");while (true) {File[] discstem = File.listRoots();boolean flag = false;if (discstem.length > discs.length) {for (int i = discstem.length - 1; i >= 0; i--) {flag = false;for (int j = discs.length - 1; j >= 0; j--) {if (discs[j].equals(discstem[i])) {flag = true;}}if (!flag) {System.out.println("插入可移动磁盘:" + discstem[i].toString());System.out.println(new Disc(discstem[i]).getDiscription());}}discs = File.listRoots(); // 更新文件系统根} else if (discstem.length < discs.length) {for (int i = discs.length - 1; i >= 0; i--) {flag = false;for (int j = discstem.length - 1; j >= 0; j--) {if (discs[i].equals(discstem[j])) {flag = true;}}if (!flag) {System.out.println("退出可移动磁盘:" + discs[i].toString());}}discs = File.listRoots();}try {Thread.sleep(1000);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}public static void main(String[] args) {new Thread(new DiscsUsage()).start();}}