请问下面这段代码中，哪里进行了空操作？

来源：百度知道 编辑：UC知道 时间：2024/06/22 09:59:41
import java.util.*;
import java.io.*;

public class CardList
{
private int count_Cards;
private final int MAX = 10;
private String s;
public Card cards[];
public CardList()
{
count_Cards = 0;
cards = new Card[MAX];
s="";
}
public int getCountCards()
{
return count_Cards;
}

public void readInput()
{
FileReader txtFile = null;
BufferedReader in = null;

try
{
txtFile = new FileReader("cards.txt");
in = new BufferedReader(txtFile);
while ((s = in.readLine()) !=null)
{
StringTokenizer t = new StringTokenizer(s," \t\n\r\f");
cards[count_Cards].setCode(Integer.parseInt(t.nextT

import java.util.*;
import java.io.*;

public class CardList
{
private int count_Cards;
private final int MAX = 10;
private String s;
public Card cards[];
public CardList()
{
cards = new Card[MAX];
count_Cards = 0;
for(int i=0;i<MAX;i++)
cards[i] = new Card();
}
public int getCountCards()
{
return count_Cards;
}

public void readInput()
{
FileReader txtFile = null;
BufferedReader in = null;

try
{
txtFile = new FileReader("cards.txt");
in = new BufferedReader(txtFile);
StringTokenizer t;
while ((s = in.readLine())!=null)
{
t = new StringTokenizer(s);
while(t.hasMoreTokens