Spliting a user input string by ":"

Question

I want to get a user input using a JOptionPane input box and split the user's input into 2 sections. (I'm a student so I have to use JOptionPane.) For example, I want to get the start time, 20:54, and split it to

startHour = 20;
startMin = 54;

score 0 · Accepted Answer · edited Nov 20 '20 at 09:42

0

you can use the split function of String class which return an array of string values then index 0 contain the hour, index 1 contain the minutes:

note: you need to cast the string value to int

String value = "20:54";
String [] parts = value.split(":");
int startHour = Integer.parseInt(parts[0]);
int startMin = Integer.parseInt(parts[1]);

edited Nov 20 '20 at 09:42

Mark Rotteveel

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answered Nov 18 '20 at 17:38

Mustafa Poya

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@Hulk Its better to store it in array and access array by index. – Mustafa Poya Nov 18 '20 at 17:46
Thanks a lot man! – Benny Kerido Nov 18 '20 at 17:48
[`parseInt`](https://docs.oracle.com/en/java/javase/15/docs/api/java.base/java/lang/Integer.html#parseInt(java.lang.String)) would avoid unnecessary boxing `int` to `Integer`. – Hulk Nov 18 '20 at 17:49
@BennyKerido I updated the code with using `Integer.ParseInt()` instead of using `valueOf` which cause unnecessary boxing. – Mustafa Poya Nov 18 '20 at 17:56
There is no casting in your example. There is only parsing the string to an integer. Typecasting is a specific operation in Java (and C). – NomadMaker Nov 18 '20 at 18:06
sorry, For the wrong describing, I tried to parse the value of string to int. – Mustafa Poya Nov 18 '20 at 18:07

Spliting a user input string by ":"

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