I have a txt file that contains 40 names. Each name is on its own line. This method should take each name and place it into an array of 4 elements and then take that array and write those files to another txt file with use of another method.
我有一个包含40个名字的txt文件。每个名字都有自己的名字。此方法应该采用每个名称并将其放入一个包含4个元素的数组中,然后使用该数组并使用另一个方法将这些文件写入另一个txt文件。
My issue is every forth name in the list somehow ends up being null and my output txt file ends up with 10 rows and a null as the forth element in each row.
我的问题是列表中的每个名称都以某种方式结束为空,我的输出txt文件以10行结尾,并且每行的第四个元素为null。
I have provided code and sample I/O below. Thanks in advance!
我在下面提供了代码和示例I / O.提前致谢!
Sample Input
Emily
Reba
Emma
Abigail
Jeannie
Isabella
Hannah
Samantha
My method
public static void fillArray(String[] player ,String[] team, BufferedReader br) throws IOException{
String line;
int count = 0;
while((line = br.readLine()) != null){
if(count < 3){
player[count] = line;
count++;
}
else{
count = 0;
writeFile(player);
}
}
br.close();
}
Sample Output
Emily Reba Emma null
Jeannie Isabella Hannah null
1 个解决方案
#1
2
Your logic is incorrect. player[3] is never set and the next loop you end up reading a line without storing it into the array. Use this:
你的逻辑不正确。播放器[3]永远不会被设置,下一个循环最终会读取一行而不将其存储到数组中。用这个:
public static void fillArray(String[] player ,String[] team, BufferedReader br) throws IOException{
String line;
int count = 0;
while((line = br.readLine()) != null){
player[count] = line;
count++;
if (count == 4) {
count = 0;
writeFile(player);
}
}
#1
2
Your logic is incorrect. player[3] is never set and the next loop you end up reading a line without storing it into the array. Use this:
你的逻辑不正确。播放器[3]永远不会被设置,下一个循环最终会读取一行而不将其存储到数组中。用这个:
public static void fillArray(String[] player ,String[] team, BufferedReader br) throws IOException{
String line;
int count = 0;
while((line = br.readLine()) != null){
player[count] = line;
count++;
if (count == 4) {
count = 0;
writeFile(player);
}
}