Calling a constructor from method within the same class
- by Nathan
I'm new to java and I'm learning about creating object classes. One of my homework assignment requires that I call the constructor at least once within a method of the same object class. I'm getting an error that says The method DoubleMatrix(double[][]) is undefined for the type DoubleMatrix
Here's my constructor:
public DoubleMatrix(double[][] tempArray)
{
// Declaration
int flag = 0;
int cnt;
// Statement
// check to see if doubArray isn't null and has more than 0 rows
if(tempArray == null || tempArray.length < 0)
{
flag++;
}
// check to see if each row has the same length
if(flag == 0)
{
for(cnt = 0; cnt <= tempArray.length - 1 || flag != 1; cnt++)
{
if(tempArray[cnt + 1].length != tempArray[0].length)
{
flag++;
}
}
}
else if(flag == 1)
{
makeDoubMatrix(1, 1);// call makeDoubMatrix method
}
}// end constructor 2
Here's the method where I try and call the constructor:
public double[][] addMatrix(double[][] tempDoub)
{
// Declaration
double[][] newMatrix;
int rCnt, cCnt;
//Statement
// checking to see if both are of same dimension
if(doubMatrix.length == tempDoub.length &&
doubMatrix[0].length == tempDoub[0].length)
{
newMatrix = new double[doubMatrix.length][doubMatrix[0].length];
// for loop to add matrix to a new one
for(rCnt = 0; rCnt <= doubMatrix.length; rCnt++)
{
for(cCnt = 0; cCnt <= doubMatrix.length; cCnt++)
{
newMatrix[rCnt][cCnt] = doubMatrix[rCnt][cCnt] + tempDoub[rCnt][cCnt];
}
}
}
else
{
newMatrix = new double[0][0];
DoubleMatrix(newMatrix)
}
return newMatrix;
}// end addMatrix method
Can someone point me to the right direction and explain why I'm getting an error?
