我正在尝试为一些矩阵运算实现一个关联运算符，而且我还必须使用复数。我在运行程序后遇到以下错误：java.lang.arraystoreexception:java.lang.double，我发现这个错误是因为instanceof check传递为false，而它应该是true。
这是我的密码：

public void readFromFile(int noOfLines, int noOfColumns,T[][] matrix,T t) throws FileNotFoundException
{
    File file = new File("matrix.txt");
    Scanner s = new Scanner(file);
    for (int i = 0; i < noOfLines; ++i)
    {
        for (int j = 0; j < noOfColumns; ++j)
        {
            if(t instanceof ComplexNumber)
                matrix[i][j] = (T)new ComplexNumber(s.nextInt(), 1);
            else if(t instanceof  Integer)
                matrix[i][j] = (T)new Integer(s.nextInt());
            else
                matrix[i][j] = (T)new Double(s.nextInt());
        }
    }
}

问题出现在这一行

if(t instanceof ComplexNumber)
   matrix[i][j] = (T)new ComplexNumber(s.nextInt(), 1);

这一行的错误

matrix[i][j] = (T)new Double(s.nextInt());

下面是我如何调用函数

ComplexNumber[][] matrix1 = new ComplexNumber[noOfLines][noOfColumns];
 file.readFromFile(noOfLines,noOfColumns,matrix1,ComplexNumber.class);

noofline和noofcolumns是整数，readfromfile从文件中读取一些字符串，它应该将它们放入matrix1数组中。如何解决这个问题，为什么complexnumber.class（或readfromfile参数中的t）和instanceof complexnumber不存在？谢谢您。
编辑：complexnumber类

public class ComplexNumber {
public double real;
public double imag;
public String output = "";
public ComplexNumber(double real, double imag) {
    this.real += real;
    this.imag += imag;
}
public ComplexNumber() {
    real = 0;
    imag = 0;
}
public double getReal() {
    return real;
}
public void setReal(double real) {
    this.real = real;
}
public double getImag() {
    return imag;
}
public void setImag(double imag) {
    this.imag = imag;
}
public void add(ComplexNumber num2) {
    this.real += num2.real;
    this.imag += num2.imag;
}
public void subtract(ComplexNumber num) {
    this.real -= num.real;
    this.imag -= num.imag;
}
public void print() {
    System.out.print(real + " " + imag + "i");
}
public String toString() {
    return real + " " + imag + "i";
}
}