I have problem with saving data in csv file. I would like save my data look
like this example :

excel preview :

  A     B   C
1  10   11   12
2  13   14   15  

As we see all values are in separate cell A1=10, B1=11, C1=12 ...

so I try :

PrintWriter wy = new PrintWriter(new FileWriter("test.csv"));

values[0][0]="10";
values[0][1]="11";
values[0][2]="12";

values[1][0]="13";
values[1][1]="14";
values[1][2]="15";

for (String[] row : values){
for (String col : row) {
  wy.print(col + "\t");
}
}

but csv file look like :

A1=10 11 12
A2=13 14 15

but B1-B2 and C1-C2 is empty

the second steep is use Ostermiller library :

OutputStream out;
out = new FileOutputStream("temp.csv");
CSVPrinter csvp = new CSVPrinter(out);
           
String[][] values = new String[2][3];
           
csvp.changeDelimiter('\t');
           
values[0][0]="10";
values[0][1]="11";
values[0][2]="12";
           
values[1][0]="13";
values[1][1]="14";
values[1][2]="15";
           
csvp.println(values);

but the result is also this same, is anyone do how to resolve this problem
?