JAVA - Double split string and convert to integer

Question

Hello i tried many ways to complete this but i failed. Could you help me ? I need double split one is "\n" and second is "|". In textArea is string 350|450\n 444|452\n and so one. There are mouse coordinates. X|Y in int array i need

array[0]= x coord;
array[1]= y coord;
array[2]= x coord;
array[2]= y coord;

So i have string in textarea.I split that by "\n"

String s[]= txtArea.getText().split("\\n");

This is one split and in textarea i have something like 150|255 this is my mouse coordinates x|y. So i need next split "|".

String s2[] = s[i].split("|");

After that

int [] array = new [s.length*2];

And some method for

while(!(s[j].equals("|")))
array[i] = Integer.parseInt(s[j]);

I tried something like that-

for(String line : txtArea.getText().split("\\n")){
            arrayXY = line.split("\\|");
            array = new int[arrayXY.length];
        }

Thank you a lot for answers :) Have a nice day.

what exactly are you trying to do here ?? you need a result array which contains only the x and y coordinates ? — QuakeCore
– QuakeCore, Commented Sep 20, 2015 at 10:15

user4668606 · Accepted Answer · 2015-09-20 10:16:54Z

4

This can be solved easily using regex:

String[] split = input.split("\\||\n");

split will then contain the single numbers from the input.

answered Sep 20, 2015 at 10:16

user4668606

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5 Comments

Daniel Over a year ago

and after that how how do i know if number was one digit or more digit ?

QuakeCore Over a year ago

if (number>9) then its a two digit number

Daniel Over a year ago

no i mean mouse coord can be 0|356 or 22|0 or 456|478 how can i know it

user4668606 Over a year ago

pretty simple, since the numbers are still strings after the split: if(split[i].length() > 1)itsATwoDigitNumber();

Daniel Over a year ago

Thank you Paul i am done with this and it is working Thank you a lot :) Have a nice day.

Hungry Blue Dev · Accepted Answer · 2015-09-20 10:19:08Z

0

Use Scanner. It is always preferred over String.split().

Your code would then reduce to:

Scanner scanner = new Scanner(txtArea.getText());
scanner.useDelimiter("\\||\\n");          // i.e. | and the new line
for (int i = 0; i < array.length; i++) {  // or use the structure you need
    array[i] = scanner.nextInt();
}

Also, don't forget to import java.util.Scanner;

answered Sep 20, 2015 at 10:19

Hungry Blue Dev

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