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import java.util.*;import java.text.*;public class Text{public static void main(String[] args){long curtime=System.currentTimeMillis();//调用系统当前距1970-1-1 08:00:00的毫秒秒数System.out.println(curtime);Date t=new Date();//系统当前时间System.out.println(t);SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//创建格式转换对象System.out.println(sdf.format(t));Date t1=new Date(1000);//距1970-1-1 00:00:00后一秒的系统时间System.out.println(sdf.format(t1));Date t2=new Date(curtime-1000);//当前系统前一秒的时间System.out.println(sdf.format(t2));String now="2015-1-28 10:22:12";try{System.out.println(sdf.parse(now));//将字符串转换成Date类型}catch(Exception e){System.out.println(e);}/*1422459183319Wed Jan 28 23:33:03 CST 20152015-01-28 23:33:031970-01-01 08:00:012015-01-28 23:33:02Wed Jan 28 10:22:12 CST 2015*/}}

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