import java.io.*;
import java.util.*;
public class HandleCsv {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(
   new InputStreamReader(
    new FileInputStream("test.csv")
   )
);

String line;
String name;
String age;
String birthday;
while ( (line = br.readLine()) != null ) {
   //System.out.println(line);
   String[] info = line.split(",");
   name = info[0].trim();
   age = info[1].trim();
   birthday = info[2].trim();
   System.out.print(name + "t" + age + "t" + birthday + "n");
  }
 }
}

alice, 22, 1992/03/05
bob, 33, 1981/11/21
cart, 40, 1974/07/13