grammar: stringObject.split(separator, howmany)
|parameter | description|
|-|-|
|separator|howmany|
|needed. string or regular expression|optional. number of substrings|

e.g.
“2:3:4:5”

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split(":");
>>["2","3","4","5"]

convert the str to the int

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t[0] = "25";
int minute = Integer.parseInt(t[0]);
>> minute = 25;