package com;
import java.text.SimpleDateFormat;
import java.util.Date;
public class CheckTimeHHMM {
public static void main(String[] args) {
boolean flg = checkTime("8:00");
boolean flg3 = checkTime("24:00");
boolean flg1 = checkTime("8:60");
boolean flg2 = checkTime("25:00");
boolean flg4 = checkTime("25:0-");
boolean flg6 = checkTime("ss:0-");
if (flg) {
System.out.println("8:00是正確格式");
}
if (flg3) {
System.out.println("24:00是正確格式");
}
if (!flg1) {
System.out.println("8:60不是正確格式");
}
if (!flg2) {
System.out.println("25:00不是正確格式");
}
if (!flg4) {
System.out.println("25:0-不是正確格式");
}
if (!flg6) {
System.out.println("ss:0-不是正確格式");
}
}
public static boolean checkHHMM(String time) {
SimpleDateFormat dateFormat = new SimpleDateFormat("hh:mm");
try {
@SuppressWarnings("unused")
Date t = dateFormat.parse(time);
}
catch (Exception ex) {
return false;
}
return true;
}
public static boolean checkTime(String time) {
if (checkHHMM(time)) {
String[] temp = time.split(":");
if ((temp[0].length() == 2 || temp[0].length() == 1) && temp[1].length() == 2) {
int h,m;
try {
h = Integer.parseInt(temp[0]);
m = Integer.parseInt(temp[1]);
} catch (NumberFormatException e) {
return false;
}
if (h >= 0 && h <= 24 && m <= 60 && m >= 0) {
return true;
}
}
}
return false;
}
}
