如何在java中获取上次修改时间和当前sysdate时间差

import java.io.File;

public class FileTimeDifference {
    public static void main(String[] args) {
        File file = new File("path/to/file"); // 替换为你的文件路径

        long lastModifiedTime = file.lastModified();
        long currentTime = System.currentTimeMillis();

        long timeDifference = Math.abs(currentTime - lastModifiedTime);

        System.out.println("上次修改时间：" + lastModifiedTime);
        System.out.println("当前系统时间：" + currentTime);
        System.out.println("时间差：" + timeDifference + "毫秒");
    }
}