java arraylist添加空指针异常

public class Human {
private int age;
private float height;
private float weight;
private String name = new String();

public Human() {
}

public Human(String name, int age, float height, float weight) {
    this.name = name;
    this.age = age;
    this.height = height;
    this.weight = weight;
}

public Human(Human human) {
    this.name = human.getName();
    this.age = human.getAge();
    this.height = human.getHeight();
    this.weight = human.getWeight();
}

public static void writeFile(Human human, OutputStream output) throws IOException {
    output.write((human.getName() + "\n").getBytes());
    output.write((human.getAge() + "\n").getBytes());
    output.write((human.getHeight() + "\n").getBytes());
    output.write((human.getWeight() + "\n").getBytes());
}

public static Human readFile(InputStream input) throws IOException {
    int temp;
    String file = "";
    String[] fileArray;

    file += (char) input.read();
    while ((temp = input.read()) != -1) {
        file += (char) temp;
    }

    fileArray = file.split("\n", 0);

    Human madeHuman = new Human(fileArray[0], Integer.parseInt(fileArray[1]), Float.parseFloat(fileArray[2]), Float.parseFloat(fileArray[3]));

    return madeHuman;
}

public static void writeArrayListInFile(ArrayList<Human> humans, OutputStream output) throws IOException {
    for (int i = 0; i < humans.size(); i++) {
        output.write((humans.get(i).getName() + "\n").getBytes());
        output.write((humans.get(i).getAge() + "\n").getBytes());
        output.write((humans.get(i).getHeight() + "\n").getBytes());
        output.write((humans.get(i).getWeight() + "\n").getBytes());
        output.write('#');
    }
}

public static ArrayList<Human> readArrayListFromFile(InputStream input) throws IOException {
    int temp = ' ';
    String file = "";
    String[] fileArray1;
    String[][] fileArray2 = new String[10][];
    ArrayList<Human> madeHumanArrayList = new ArrayList<Human>();

    file += (char) input.read();
    while ((temp = input.read()) != -1) {
        file += (char) temp;
    }

    fileArray1 = file.split("#", 0);

    for (int i = 0; i < fileArray1.length; i++)
        for (int j = 0; j < 4; j++)
            fileArray2[i] = fileArray1[i].split("\n", 0);

    for (int i = 0; i < fileArray2.length; i++)
        madeHumanArrayList.add(new Human(fileArray2[i][0], Integer.parseInt(fileArray2[i][1]), Float.parseFloat(fileArray2[i][2]), Float.parseFloat(fileArray2[i][3])));//null pointer exception

    return madeHumanArrayList;
}
public class Human {
private int age;
private f