parse csv java

CSVLine.java

package test;

import java.util.List;

import com.google.common.base.MoreObjects;
import com.google.common.collect.ImmutableList;

public class CSVLine
{
    public final String number;
    public final List<String> liste;
    public final String valeur;
    
   
    public static Builder builder(){
        return new Builder();
    }


    private CSVLine(Builder builder) {
      this.number = builder.number;
      this.liste = builder.liste;
      this.valeur = builder.valeur;
    }


    public static class Builder{

        private String number;
        private List<String> liste = ImmutableList.of();
        private String valeur;
        public Builder withNumber(String number) {
          this.number = number;
          return this;
        }
        public Builder withListe(List<String> liste) {
          this.liste = ImmutableList.copyOf(liste);
          return this;
        }
        public Builder addToListe(String s) {
            liste = ImmutableList.<String>builder().addAll(liste).add(s).build();
            return this;
          }
        public Builder withValeur(String valeur) {
          this.valeur = valeur;
          return this;
        }
        public CSVLine build() {
          return new CSVLine(this);
        }
    }
    @Override
    public String toString() {
      return MoreObjects.toStringHelper( getClass() )
        .add( "number", number )
        .add( "liste", liste )
        .add( "value", valeur)
        .toString();
    }
    
}

CSVReader.java

package test;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringReader;
import java.util.List;

import test.CSVLine.Builder;

import com.google.common.collect.ImmutableList;


/**
 * Hello world!
 *
 */
public class App {
   private static final String DEFAULT_SEPARATOR = ";";
   private static final String csvString =
      "63; Rule number: 63 [conversions=23.6666666666667 cover=18 (0%)];23,7\r\n" +
      "63;   city_paris=1;23,7\r\n" +
      "63;   browser_Mobile Safari=1;23,7\r\n" +
      "63;   day_7=0;23,7\r\n" +
      "63;   day_6=0;23,7\r\n" +
      "63;   day_1=1;23,7\r\n" +
      "63;;23,7\r\n" +
      "55; Rule number: 55 [conversions=22.9444444444444 cover=18 (0%)];22,9\r\n" +
      "55;   city_paris=1;22,9\r\n" +
      "55;   browser_Mobile Safari=0;22,9\r\n" +
      "55;   browser_Chrome Mobile=1;22,9\r\n" +
      "55;   day_7=0;22,9\r\n" +
      "55;   day_2=1;22,9\r\n" +
      "55;;22,9\r\n" +
      "251; Rule number: 251 [conversions=20.3529411764706 cover=17 (0%)];20,4\r\n" +
      "251;   city_paris=1;20,4\r\n" +
      "251;   browser_Mobile Safari=1;20,4\r\n" +
      "251;   day_7=0;20,4\r\n" +
      "251;   day_6=0;20,4\r\n" +
      "251;   day_1=0;20,4\r\n" +
      "251;   day_5=0;20,4\r\n" +
      "251;   day_4=1;20,4\r\n" +
      "251;;20,4";
   public static void main(String[] args) throws Exception {
      List<CSVLine> csvLines = parseCsv();

      for (CSVLine csvLine : csvLines){
         System.out.println(csvLine);
      }

   }
   private static List<CSVLine> parseCsv()  {
      ImmutableList.Builder<CSVLine> csvLines = ImmutableList.<CSVLine>builder();
      try (BufferedReader br = new BufferedReader(new StringReader(csvString))) {
         String line = br.readLine();
         if(line != null){
            String values[] = line.split(DEFAULT_SEPARATOR);
            String number = values[0];
            Builder builder = CSVLine.builder()
               .withNumber(number)
               .addToListe(values[1])
               .withValeur(values[2]);
               while ((line = br.readLine()) != null) {
                  String _values[] = line.split(DEFAULT_SEPARATOR);
                  String _number = _values[0];
                  if(_number.equals(number)){
                     builder.addToListe(_values[1]);
                  }else{
                     csvLines.add(builder.build());
                     number = _values[0];
                     builder = CSVLine.builder()
                        .withNumber(_number)
                        .addToListe(_values[1])
                        .withValeur(_values[2]);
                  }
               }
                csvLines.add(builder.build());
         }

      } catch (IOException e) {
         e.printStackTrace();
      }
      return csvLines.build();
   }
}

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>test</groupId>
  <artifactId>test</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
  <dependencies>
    <dependency>
      <groupId>com.google.guava</groupId>
      <artifactId>guava</artifactId>
      <version>19.0</version>
    </dependency>
    </dependencies>
</project>