Simple Addition "program/tool" - Topic

Member

Posts: 1,995

Joined: Jun 28 2006

Gold: 7.41

Dec 15 2014 10:15pm

Code

package NumberReader;

import java.io.*;
import java.util.Scanner;

public abstract class NumberReaderBase implements INumberReader
{
protected Scanner in;
protected PrintStream out;
protected Number maximumNumber, minimumNumber;
protected int amountOfNumbers;

public NumberReaderBase(INumberReaderConfig config)
{
readConfig(config);
}

private void readConfig(INumberReaderConfig config)
{
in = new Scanner(config.getInputer());
out = config.getPrinter();
maximumNumber = config.getMaximumNumber();
minimumNumber = config.getMinimumNumber();
amountOfNumbers = config.getAmountOfNumbers();
}

protected Number getMaximumNumber() { return maximumNumber; }
protected Number getMinimumNumber() { return minimumNumber; }
protected int getAmountOfNumbers() { return amountOfNumbers; }

protected abstract Number readNumber(String msg) throws NumberNotFoundException;

protected abstract boolean isValidNumber(Number number);

protected void printLine(String line)
{
out.println(line);
}

}

And now I for the extension to this which will solve your problem.

Code

package NumberReader.IntegerReader;

import NumberReader.NumberReaderBase;
import NumberReader.INumberReaderConfig;
import NumberReader.NumberNotFoundException;

public abstract class IntegerReader extends NumberReaderBase
{

public IntegerReader(INumberReaderConfig config)
{
super(config);
}

protected Number readNumber(String msg) throws NumberNotFoundException
{
Integer number = 0;

do
{
out.println(msg);

if(!in.hasNextInt())
throw new NumberNotFoundException("Integer not found.");
number = in.nextInt();

} while(!isValidNumber(number));

return number;
}

protected boolean isValidNumber(Number number)
{
return number.intValue() >= minimumNumber.intValue() && number.intValue() <= maximumNumber.intValue();
}
}

Code

package NumberReader.IntegerReader;

import NumberReader.INumberReaderConfig;
import NumberReader.NumberNotFoundException;

public abstract class PromptlessIntegerReader extends IntegerReader {
public PromptlessIntegerReader(INumberReaderConfig config)
{
super(config);
}

public Integer readNumber(String msg) throws NumberNotFoundException {
Integer number = 0;

do
{
if(!in.hasNextInt())
throw new NumberNotFoundException("Integer not found.");
number = in.nextInt();

} while(!isValidNumber(number));

return number;
}

public abstract void readNumbers();

}

Code

package NumberReader.IntegerReader;

import NumberReader.INumberReaderConfig;
import java.io.InputStream;
import java.io.PrintStream;

public class StaticIntegerReaderConfig implements INumberReaderConfig
{
public Number getMaximumNumber() { return StaticIntegerReaderConstants.MAXIMUM_NUMBER; }
public Number getMinimumNumber() { return StaticIntegerReaderConstants.MINIMUM_NUMBER; }
public int getAmountOfNumbers() { return 2; }
public InputStream getInputer() { return StaticIntegerReaderConstants.INPUTER; }
public PrintStream getPrinter() { return StaticIntegerReaderConstants.PRINTER; }
}

Code

package NumberReader.IntegerReader;

import java.io.InputStream;
import java.io.PrintStream;

public class StaticIntegerReaderConstants
{
public static final Integer MAXIMUM_NUMBER = Integer.MAX_VALUE;
public static final Integer MINIMUM_NUMBER = Integer.MIN_VALUE;
public static final int AMOUNT_OF_NUMBERS = Integer.MAX_VALUE;
public static final InputStream INPUTER = System.in;
public static final PrintStream PRINTER = System.out;
}

Minkomonster

Member

Posts: 1,995

Joined: Jun 28 2006

Gold: 7.41

#12

Dec 15 2014 10:17pm

Code

package NumberReader.IntegerReader;

import NumberReader.INumberReaderConfig;
import NumberReader.NumberNotFoundException;

public class AdditivePromptlessIntegerReader extends PromptlessIntegerReader {
public AdditivePromptlessIntegerReader(INumberReaderConfig config)
{
super(config);
}

public void readNumbers() {
int sum = 0;

while(true)
{
try
{
sum += readNumber("");

}catch(NumberNotFoundException nnfe)
{
break;
}
}

out.println(sum);

}

}

Code

package NumberReader.IntegerReader;

import NumberReader.NumberReaderApplicationBase;

public class AdditivePromptlessIntegerReaderApplication extends NumberReaderApplicationBase
{
AdditivePromptlessIntegerReaderApplication()
{
super(new AdditivePromptlessIntegerReaderFactory(), new StaticIntegerReaderConfig());
}
}

Code

package NumberReader.IntegerReader;

import NumberReader.INumberReader;
import NumberReader.INumberReaderConfig;
import NumberReader.INumberReaderFactory;

public class AdditivePromptlessIntegerReaderFactory implements INumberReaderFactory {

public INumberReader createNumberReader(INumberReaderConfig config) {
return new AdditivePromptlessIntegerReader(config);
}

}

This can be executed using the following Driver, using dependency injection to wire up the application for use

Code

package NumberReader.IntegerReader;

public class AdditivePromptlessIntegerReaderApplicationDriver
{
public static void main(String[] args)
{
new AdditivePromptlessIntegerReaderApplication().execute();
}
}

Edit: You may notice that I used an exception to modify control logic. This is poor design. If it is beneficial to you, I can refactor this immediately to provide a more robust solution to your problem.

This post was edited by Minkomonster on Dec 15 2014 10:19pm

MW_Dream

Member

Posts: 6,504

Joined: Jun 18 2007

Gold: 13,428.00

#13

Dec 15 2014 10:49pm

i give up i think i was hoping for an easy solution ;\

Minkomonster

Member

Posts: 1,995

Joined: Jun 28 2006

Gold: 7.41

#14

Dec 15 2014 10:58pm

Quote (MW_Dream @ Dec 15 2014 11:49pm)

i give up i think i was hoping for an easy solution ;\

What's so difficult about it?

Qord

Member

Posts: 8,112

Joined: Sep 23 2006

Gold: 3,558.23

#15

Dec 15 2014 11:54pm

http://spreadsheets.about.com/od/tipsandfaqs/f/sum_autosum.htm

j0ltk0la

Member

Posts: 62,215

Joined: Jun 3 2007

Gold: 9,039.20

#16

Dec 16 2014 04:38am

Forgot to escape the \'

Try

Code

print('oops, don\'t start with space or anything dum')

Code

print("oops, don't start with space or anything dum")

Klexmoo

Member

Posts: 12,787

Joined: May 17 2013

Gold: 4,010.00

#17

Dec 16 2014 01:48pm

Do you still need this? I made this in 2 minutes in C, can give you the program if you want, or if you have your own compiler:

Code

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(void){
int i = 0;
int addition = 0;

while (i >= 0){
scanf(" %d", &i);
addition += i;
printf("Your number after adding to the previous: %d\n", addition);
}
return 0;
}

With this you need to press enter after every number, and just quit using CTRL + C to close the terminal.

This post was edited by Klexmoo on Dec 16 2014 01:48pm

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