我想用输入文件中的行填充数组列表,输入文件如下所示：
7f00000000000000000000000000000000000000000000000000000000000000027f00000000000000000000000000000000000000000000000000000000000000027f00000000000000000000000000000000000000000000000000000000000000020101
7f00000000000000000000000000000000000000000000000000000000000000037f00000000000000000000000000000000000000000000000000000000000000037f00000000000000000000000000000000000000000000000000000000000000030101
7f00000000000000000000000000000000000000000000000000000000000000047f00000000000000000000000000000000000000000000000000000000000000047f00000000000000000000000000000000000000000000000000000000000000040101
7f00000000000000000000000000000000000000000000000000000000000000057f00000000000000000000000000000000000000000000000000000000000000057f00000000000000000000000000000000000000000000000000000000000000050101
7f00000000000000000000000000000000000000000000000000000000000000067f00000000000000000000000000000000000000000000000000000000000000067f00000000000000000000000000000000000000000000000000000000000000060101
我想基于此创建的Java中的数据对象将这些行中的每一行作为新字符串,并且它们将一起存在于列表中,可以这么说*.
因此,在我尝试将文件行读入此数组列表的不同组件时,我无法弄清楚我需要在主程序中声明数组列表的位置.我的计划是用一个单独的方法填充它：
import java.io.*;
import java.util.Scanner;
import java.util.List;
import java.util.Array;
import java.util.ArrayList;
class evmTest {
public static void main(String[] args) {
Array inputLinesObject = new ArrayList();
// populate from file
inputLinesObject = readFile(“/Users/s.matthew.english/codes.txt”, inputLinesObject);
System.out.println(Array.toString(inputLinesObject));
}
private static void readFile(String fileName, Array inputLines) {
try {
File file = new File(fileName);
Scanner scanner = new Scanner(file);
while (scanner.hasNextLine()) {
// System.out.println(scanner.nextLine());
inputLines.add(scanner.nextLine());
}
scanner.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
}
return inputLines;
}
}
也许我最初可以将它实例化为null,然后将该空数组列表传递给要填充的方法？
*最后一句话中的术语并不完全准确 – 请原谅我 – 我正在重新调整Java的词汇量,但我认为它应该足够清楚我正在尝试做什么.如果没有,请告诉我,我将很乐意澄清.