public class DateToSecond
{
public static void main(String[] args)
{
Date date = new Date(System.currentTimeMillis())
System.out.println(date.getTime())
}
}
Date类有一个getTime()可以换回秒数,例如:
public class DateToSecond{
public static void main(String[] args)
{
Date date = new Date(System.currentTimeMillis())
System.out.println(date.getTime())
}
}
import java.util.Scannerpublic class Convert{
public static void main(String[] args){
System.out.println("请输入时分秒,格式为hh:mi:ss")
Scanner input=new Scanner(System.in)
String s=input.next()
int index1=s.indexOf(":")
int index2=s.indexOf(":",index1+1)
int hh=Integer.parseInt(s.substring(0,index1))
int mi=Integer.parseInt(s.substring(index1+1,index2))
int ss=Integer.parseInt(s.substring(index2+1))
System.out.println(hh*60*60+mi*60+ss)
}
}