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| /************************************************************************
* Method Name : getInput
* Purpose : get user input from System.in
* Parameters : None
* Return : String value of the users input
*************************************************************************/
public static String getInput()
{
String input="";
//read from System.in
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
//try to get users input, if there is an error print the message
try
{
input = reader.readLine();
}
catch (Exception e)
{
System.out.println(e);
}
return input;
}
/************************************************************************
* Method Name : getConfig
* Purpose : get the configuration information (config filename, transaction filename)
* : configFile and transaFile will be change appropriately
* Parameters : None
* Return : None
*************************************************************************/
private void getConfig()
{
FileWriter fw;
BufferedWriter file_out;
String input="";
//ask if want to change the config
System.out.println("Default Configuration: ");
System.out.println("\tRegular transaction file with '" + itemSep + "' item separator.");
System.out.println("\tConfig File: " + configFile);
System.out.println("\tTransa File: " + transaFile);
System.out.println("\tOutput File: " + outputFile);
System.out.println("\nPress 'C' to change the item separator, configuration file and transaction files");
System.out.print("or any other key to continue. ");
input=getInput();
if(input.compareToIgnoreCase("c")==0)
{
System.out.print("Enter new transaction filename (return for '"+transaFile+"'): ");
input=getInput();
if(input.compareToIgnoreCase("")!=0)
transaFile=input;
System.out.print("Enter new configuration filename (return for '"+configFile+"'): ");
input=getInput();
if(input.compareToIgnoreCase("")!=0)
configFile=input;
System.out.print("Enter new output filename (return for '"+outputFile+"'): ");
input=getInput();
if(input.compareToIgnoreCase("")!=0)
outputFile=input;
System.out.println("Filenames changed");
System.out.print("Enter the separating character(s) for items (return for '"+itemSep+"'): ");
input=getInput();
if(input.compareToIgnoreCase("")!=0)
itemSep=input;
}
try
{
FileInputStream file_in = new FileInputStream(configFile);
BufferedReader data_in = new BufferedReader(new InputStreamReader(file_in));
//number of items
numItems=Integer.valueOf(data_in.readLine()).intValue();
//number of transactions
numTransactions=Integer.valueOf(data_in.readLine()).intValue();
//minsup
minSup=(Double.valueOf(data_in.readLine()).doubleValue());
//output config info to the user
System.out.print("\nInput configuration: "+numItems+" items, "+numTransactions+" transactions, ");
System.out.println("minsup = "+minSup+"%");
System.out.println();
minSup/=100.0;
oneVal = new String[numItems];
System.out.print("Enter 'y' to change the value each row recognizes as a '1':");
if(getInput().compareToIgnoreCase("y")==0)
{
for(int i=0; i<oneVal.length; i++)
{
System.out.print("Enter value for column #" + (i+1) + ": ");
oneVal[i] = getInput();
}
}
else
for(int i=0; i<oneVal.length; i++)
oneVal[i]="1";
//create the output file
fw= new FileWriter(outputFile);
file_out = new BufferedWriter(fw);
//put the number of transactions into the output file
file_out.write(numTransactions + "\n");
file_out.write(numItems + "\n******\n");
file_out.close();
}
//if there is an error, print the message
catch(IOException e)
{
System.out.println(e);
}
} |
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