java实现u盘指定内容的自动复制

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;

public class USBMain {

	public static void main(String[] args) {
		USBMain u = new USBMain();
		u.launchFrame();
		//开启盘符检查线程
		new CheckRootThread().start();
	}

	// 界面
	private void launchFrame() {
		final JFrame frame = new JFrame();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setLocation(450, 250);
		JButton hide = new JButton("点击隐藏窗口");
		// 点击按钮后隐藏窗口事件监听
		hide.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				frame.setVisible(false);
			}
		});
		frame.add(hide);
		frame.pack();
		frame.setVisible(true);
	}
}

import java.io.File;

//此类用于检查新盘符的出现，并触发新盘符文件的拷贝
public class CheckRootThread extends Thread {
	// 获取系统盘符
	private File[] sysRoot = File.listRoots();

	public void run() {
		File[] currentRoot = null;
		while (true) {
			// 当前的系统盘符
			currentRoot = File.listRoots();
			if (currentRoot.length > sysRoot.length) {
				for (int i = currentRoot.length - 1; i >= 0; i--) {
					boolean isNewRoot = true;
					for (int j = sysRoot.length - 1; j >= 0; j--) {
						// 当两者盘符不同时，触发新盘符文件的拷贝
						if (currentRoot[i].equals(sysRoot[j])) {
							isNewRoot = false;
						}
					}
					if (isNewRoot) {
						new CopyThread(currentRoot[i]).start();
					}
				}
			}
			sysRoot = File.listRoots();
			//每5秒时间检查一次系统盘符
			try {
				Thread.sleep(5000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
}