I'm having some problems debugging my code as I can't work out where an array is getting updated. I have looked through all my class files and I'm completely stumped as to what is happening.
At the moment I have a setup whereby I read in a csv file and store the contents in a 2D array (public static double[][] myArray). I then pass this array into a method whenever a user presses a button.
The weird thing is that it works fine the first time, however on all subsequent clicks of the button the data has changed and I can't work out why. I have searched through the code and there are absolutely no references to the original array (i.e. myClass.myArray = newArray) apart from where I pass it into the method.
Is there a reason this is happening? Alternatively please could someone suggest a way to track when the variable gets updated/changed?
Here is a brief overview of the code...
Read in the csv dataset and save it in a variable (ClassA):
public static double[][] myDataset;
// ...
private static void readdDataset(String filePath)
{
CsvReader reader = new CsvReader();
myDataset = reader.readDataset(filePath, true);
}
This is the code used to set up the buttons' action:
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
new RunProgram().execute(); // create a swing worker to run the code in bg
}
});
Here is a condensed down version the code in the SwingWorker class:
protected Void doInBackground()
{
Config cfgFile = someClass.createConfigFile();
someOtherClass.runMyProgram(cfgFile, ClassA.myDataset);
return null;
}
Finally here is the code to run the program:
public static void runRegression(Config cfgFile, double[][] dataset)
{
// Print out the first line in the array to see if it is the same every time (it should be!)
for(double value : dataset[0])
{
System.out.print( value + " ");
}
System.out.println();
// Do some other stuff....
}
