版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/li2327234939/article/details/82531083
案例:
public class DemoTest {
public static String lastDay = DateUtils.getDateTime4Format("yyyyMMddHHmmss");
public class DemoMain {
public static void main(String[] args) throws Exception{
System.out.println(DemoTest.lastDay);
Thread.sleep(10000L);
System.out.println(DemoTest.lastDay);
String curDay = DateUtils.getDateTime4Format("yyyyMMddHHmmss");
System.out.println(curDay);
}
}
注意:静态全局变量,在程序启动时,只会被加载一次