java - Read file and store values into two arrays, one for each line -

i got code here:

   try{          filereader file = new filereader("/users/tda/desktop/readfiles/tentares.txt");          bufferedreader br = new bufferedreader(file);           string line = null;           while((line = br.readline()) != null){               string[] values = line.split(",");              grp1 = new int[values.length];                for(int i=0; i<grp1.length; i++){                 try {                     grp1[i]= integer.parseint(values[i]);                  }catch (numberformatexception e) {                     continue;                 }             }                            system.out.println(arrays.tostring(grp1));          }          system.out.println("");          br.close();      }catch(ioexception e){         system.out.println(e);     } 

this file im reading contains.

       grp1:80,82,91,100,76,65,85,88,97,55,69,88,75,97,81         grp2:72,89,86,85,99,47,79,88,100,76,83,94,84,82,93 

right im storing values 1 int array. if wanted store each line of values 2 arrays?

thought using arrays.copyofrange somehow, , copy values int array 2 new arrays.

before while

list<int[]> groups = new arraylist<>(); 

before end of loop:

groups.add(grp1); 

afterwards:

for (int[] grp : groups) {     ... } 

a list useful growing "array".

groups.size()     grp1.length groups.get(3)     grp1[3] groups.set(3, x)  grp1[3 = x