java中的时间格式转换案例

Long nowtime = System.currentTimeMillis();  //获取当前时间戳 
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String cin01 = sdf.format(nowtime);
String cin02 = sdf.format(new Date(nowtime));
String cin03 = sdf.format(nowtime);
System.out.println("格式化结果：" + cin01);
System.out.println("格式化结果：" + cin02);
System.out.println("格式化结果：" + cin03);