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我想讀取一個csv並將記錄存儲在一個ArrayList中。 因爲我知道沒有。 csv文件中的記錄我在創建對象時指定了大小，即600。 我希望程序能夠讀取未知的文件。的記錄。 我如何使它動態。在java中使用ArrayList的getter和setter
以下是具有600條記錄的文件的工作代碼。
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.io.*;
public class BankRecords extends Client{
//Create objects for processing data
//private static int count;
static BankRecords[] obj=new BankRecords[600];
static List<List<String>> array = new ArrayList<List<String>>();
@Override
void readData() {
// TODO Auto-generated method stub
String line=" ";
//int i=0;
//try with resources statement
try(BufferedReader br = new BufferedReader(new FileReader("bank-Detail.csv"))){
while((line=br.readLine()) != null) //read from file
{
array.add(Arrays.asList(line.split(",")));
//check data
//count++;
//System.out.println(array.get(i++));
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
processData();
}
@Override
void processData() {
// TODO Auto-generated method stub
int idx=0;
for(List<String> bankData: array)
{
obj[idx]= new BankRecords();
obj[idx].setId(bankData.get(0));
obj[idx].setAge(Integer.parseInt(bankData.get(1)));
obj[idx].setSex(bankData.get(2));
obj[idx].setRegion(bankData.get(3));
obj[idx].setIncome(Double.parseDouble(bankData.get(4)));
obj[idx].setMarried(bankData.get(5));
obj[idx].setChild(Integer.parseInt(bankData.get(6)));
obj[idx].setCar(bankData.get(7));
obj[idx].setSact(bankData.get(8));
obj[idx].setCact(bankData.get(9));
obj[idx].setMort(bankData.get(10));
obj[idx].setPep(bankData.get(11));
idx++;
//System.out.println(obj[idx].getId());
}
printData();
}
@Override
void printData() {
//Printing First 25 ID, age, sex, region, income and mortgage
System.out.println("ID\t\tAGE\t\tSEX\t\tREGION\t\tINCOME\t\tMORTGAGE\n");
for(int i=0;i<25;i++){
String s=String.format("%s\t\t%s\t\t%s\t\t%-10s\t%8.2f\t%2s", obj[i].getId(),obj[i].getAge(),obj[i].getSex(),obj[i].getRegion(),obj[i].getIncome(),obj[i].getMort());
System.out.println(s);
}
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getRegion() {
return region;
}
public void setRegion(String region) {
this.region = region;
}
public double getIncome() {
return income;
}
public void setIncome(double income) {
this.income = income;
}
public String isMarried() {
return married;
}
public void setMarried(String married) {
this.married = married;
}
public int getChild() {
return child;
}
public void setChild(int child) {
this.child = child;
}
public String getCar() {
return car;
}
public void setCar(String car) {
this.car = car;
}
public String getSact() {
return sact;
}
public void setSact(String sact) {
this.sact = sact;
}
public String getCact() {
return cact;
}
public void setCact(String cact) {
this.cact = cact;
}
public String getMort() {
return mort;
}
public void setMort(String mort) {
this.mort = mort;
}
public String getPep() {
return pep;
}
public void setPep(String pep) {
this.pep = pep;
}
public static void main(String[] args) {
// TODO Auto-generated method stub
BankRecords bnk= new BankRecords();
bnk.readData();
}
ArrayList
}