逐行读取文件,同时将对象存储在每一行的数组中 [英] Reading a file line by line while storing an object in an array for each line
问题描述
我有一个文本文件,最多可读取4行.每行包含由制表符隔开的字符串和整数的混合.
I have a text file with a maximum of 4 lines to read from. Each line has a mixture of strings and integers spaced out by tabs.
我已成功使程序读取1行并将所有信息存储在适当的位置,同时还在数组中存储了新对象.
I have successfully made my program read 1 line and store all the information in the appropriate spot, while also storing a new object in the array.
问题:我无法弄清楚如何读取多行,同时还要根据读取的行将新对象存储在数组中.
The problem: I can't figure out how to get it to read multiple lines while also storing a new object in the array depending on the line read.
这是我的方法,该方法获取文件并将对象存储在数组中:
Here is my method that takes the file and and stores an object in the array:
public void addVehicle(Vehicle Honda[]) throws FileNotFoundException
{
Scanner reader = new Scanner(file);
if(canAddVehicle() == true)
{
for(int i = 0; i < vehicles.length; i++)
{
if(vehicles[i] == null)
{
Honda[i] = new Vehicle();
Honda[i].readRecord(reader);
vehicles[i] = Honda[i];
reader.close();
break;
}
}
System.out.println("Vehicle Added!");
}
else
{
System.out.println("You can not add more than 4 vehicles.");
}
}
和readRecord()方法:
And the readRecord() method:
public void readRecord(Scanner reader)
{
while(reader.hasNextLine())
{
setMake(reader.next());
setModel(reader.next());
setYear(reader.nextInt());
setvin(reader.next());
setValue(reader.nextDouble());
setMilesDriven(reader.nextInt());
setLastOilChange(reader.nextInt());
}
reader.close();
}
推荐答案
最后解决了我的问题!
public boolean addVehicle(Vehicle[] Honda) throws FileNotFoundException
{
boolean found = false;
int position = 0;
if(canAddVehicle() == true)
{
for(int i = 0; i < vehicles.length && !found; i++)
{
if(vehicles[i] == null)
{
position = i;
found = true;
}
}
Scanner reader = new Scanner(file);
while(reader.hasNext())
{
Honda[position] = new Vehicle();
Honda[position].readRecord(reader);
vehicles[position] = Honda[position];
position++;
}
reader.close();
return true;
}
return false;
}
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