Gendou.com Forum: Programming: nid help in java....

nid help in java....

Link | by killerdevil on 2008-02-04 06:42:39

hi guys!! i nid a little help in java... below shows the code which i have written... wad i nid help in is:

1) case 1: in the credit expenses (CCE), cannot have any negative $$...

CODE:

/**
* @(#)CreditCardExpenses.java
*
*
*
* @author
* @version 1.00 2007/12/15
*/

import java.text.*;

public class CreditCardExpenses
{
static int month, choice;
static DecimalFormat fmt= new DecimalFormat ("0.00");

public static void main(String[] args)
{
double[][] CCE = new double[12][8];
String[][] accNum= new String[12][8];
String dummyHolder, q="";
int i=0, j=0, count = 0;
int accCount=0;
boolean canAdd = false;
String[] monthList = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};

do{

System.out.println("***********Credit Card Expenses Tracking***********");
System.out.println("1)Enter Credit card expenses by month");
System.out.println("2)Display detailed credit card expenses by month");
System.out.println("3)Quick glance at monthy total credit card expenses");
System.out.println("4)Exit");
System.out.print("Please select your choice <1-4>: ");
q=CspInput.readString();
try
{
choice=Integer.parseInt(q);
}
catch (NumberFormatException e)
{
System.out.println("\nSorry, \""+q+"\" is not within the choice.");
System.out.println("Please choose between choice 1-4 only.\n");
continue;
}
System.out.println("****************************************************\n");

switch (choice)
{
case 1:{
do{
System.out.print("Enter month <1 for Jan - 12 for Dec>: ");
q=CspInput.readString();
try
{
month=Integer.parseInt(q);
}
catch (NumberFormatException e)
{
System.out.println("\nSorry, \""+q+"\" is not within the choice.");
System.out.println("Please choose between choice 1-12 only.\n");
continue;
}
System.out.println("--------------------------------------");
System.out.println(monthList[month-1]+" expense ");
accCount = 0;
}while (month==0);
while(true)
{
accCount++;
System.out.print("Enter account number "+accCount+" : ");
dummyHolder = CspInput.readString();
if(dummyHolder.equals(""))
break;
count = 0;
while(true)
{
canAdd = true;
if(accNum[month-1][count]==null)
break;
if(accNum[month-1][count].equals(dummyHolder))
break;
count++;
if(count>7)
{
System.out.println("All accounts are used for "+monthList[month-1]+", unable to add new account!");
canAdd = false;
break;
}
}
if(canAdd)
do{
accNum[month-1][count] = dummyHolder;
System.out.print("Enter credit card expenses for "+accNum[month-1][count]+ ": $");
q = CspInput.readString();
try
{
CCE[month-1][count]=Double.parseDouble(q);
}
catch (NumberFormatException e)
{
System.out.println("\nSorry, \""+q+"\" is not within the choice.");
System.out.println("Please enter numbers only.\n");
continue;
}
System.out.println("Updated "+ accNum[month-1][count] + " with $"+fmt.format(CCE[month-1][count]));
}while (CCE[month-1][count]==0);
}
}
break;

case 2:{

System.out.print("Enter month <1 for Jan - 12 for Dec>: ");
month= CspInput.readInt();

//if (accNum[month-1][0].length()!=0)
double totalSpend = 0.0;

for (i=1; i<8; i++)
{
if (accNum[month-1][i-1]==null)
break;

System.out.println(accNum[month-1][i-1]+"\t\t $"+fmt.format(CCE[month-1][i-1]));
totalSpend = totalSpend + CCE[month-1][i-1];
}

if(totalSpend>0)
{
System.out.println("\nTotal credit card expenses for the month of " +monthList[month-1]+" is $"+fmt.format(totalSpend));
}
else
System.out.println("No credit card expense entry for this month.\n\n");
}
break;

case 3: {
double monthSpend;

System.out.println("Monthly credit card expenses: ");

for (i=0; i<12; i++)
{
monthSpend = 0.0;

for(j=0; j<8; j++)
{
//if(accNum[i][j].length()==0) //check acc exist or not
if(accNum[i][j]==null)
break;

monthSpend = monthSpend + CCE[i][j];
}

if(monthSpend > 0)
{
if(monthSpend > 5000)
System.out.println(monthList[i]+" \t $"+fmt.format(monthSpend)+" \t Credit card expenses for this month has exceeded $5000.");
else
System.out.println(monthList[i]+" \t $"+fmt.format(monthSpend));
}

}
}
break;

case 4:{
double monthSpend;

for (i=0; i<12; i++) //loop the 12 months
{
monthSpend = 0.0; //reset the variable to 0 to cal the monthly spending

for(j=0; j<8; j++)
{
//if(accNum[i][j].length()==0) //check acc exist or not
if(accNum[i][j]==null)
break;

monthSpend = monthSpend + CCE[i][j];
}

if(monthSpend > 0)
{

System.out.println("Expense for "+monthList[i]+" is $"+fmt.format(monthSpend));

}
}
System.out.println("\nThank you for using our Credit Card Expenses Tracking System.");
}
break;

default: {
System.out.println("ERROR!");
System.out.println("Please choose between choice 1-4 only.\n");
}

}

}while (choice!=4);
}
}

asd

Re: nid help in java....

Link | by

on 2008-02-04 16:43:34 (edited 2008-02-04 16:43:47)

You're saying the CCE can't be entered negative, right? To test for that, change this:

System.out.print("Enter credit card expenses for "+accNum[month-1][count]+ ": $");
q = CspInput.readString();
try
  {
    CCE[month-1][count]=Double.parseDouble(q);
  }

to this:

System.out.print("Enter credit card expenses for "+accNum[month-1][count]+ ": $");
q = CspInput.readString();
double p = Double.parseDouble(q);
if(p < 0)
  {
    System.out.println("nSorry, ""+q+"" is not within the choice.");
    System.out.println("Please choose between choice 1-12 only.n");
  }
else
  {
    try
      {
        CCE[month-1][count] = p;
      }
    catch ... etc
   }

Try that. Should work. Probably isn't the most high-tech way to do it but you get the idea.

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