Arkajyoti Pal
asked on
How can I prevent Java from skipping the line sc.nextLine() ?
In the code given below, Java is skipping the line name = sc.nextLine() for 2nd iteration of for loop, but it works fine and doesn't skip the line for the 1st iteration. What am I doing wrong and how can I prevent Java from skipping this line?
//Calculate Electricity Bill for n customers
import java.util.Scanner;
class ElectricityBill
{
private String name;
private int n, units;
private double chrg;
void getInput()
{
Scanner sc = new Scanner(System.in);
do
{
System.out.print("Enter the no. of customers: ");
n = sc.nextInt();
}
while(n <= 0);
}
void computeAndDisplayBill()
{
Scanner sc = new Scanner(System.in);
for(int i = 1; i <= n; i++)
{
System.out.print("Enter the name of customer - "+i+": ");
name = sc.nextLine();//Java skips this line for 2nd iteration of for loop
do
{
System.out.print("Enter the no. of unit(s) consumed: ");
units = sc.nextInt();
}
while(units <= 0);
if(units <= 50)
chrg = 0.5*units;
else if(units > 50 && units <= (120+50))
chrg = (0.5*50)+(0.85*(units-50));
else if(units > (120+50) && units <= (130+120+50))
chrg = (0.5*50)+(0.85*120)+(1.2*(units-(120+50)));
else if(units > 300)
chrg = (0.5*50)+(0.85*120)+(1.2*130)+(1.75*(units-300));
double surchrg = 20.0/100 * chrg;
double govttax = 15.5/100 * chrg;
double totalchrg = chrg + surchrg + govttax;
System.out.println("For customer - "+i+": "+"\nName: "+name+"\nNo. of unit(s) consumed: "+units+"\nCharge: Rs "+chrg+"\nSur Charge: Rs "+surchrg+"\nGovt. Tax: Rs "+govttax+"\nTotal charge: Rs "+totalchrg);
}
}
}//Calculate Electricity Bill for n customers(main method)
class ElectricityBill_main
{
public static void main(String args[])
{
ElectricityBill elec = new ElectricityBill();
elec.getInput();
elec.computeAndDisplayBill();
}
}ASKER
@Alex140181 n is any number with a positive value. While executing the program, I took the value of n as 2.
That's not the code you're running (it wouldn't compile, even as a single method)
![Avatar of Alex [***Alex140181***]](https://filedb.experts-exchange.com/files/public/2022/11/13/8257e912-ee3c-4a93-9df0-fe9a8a1515cf.jpeg){kind=small}
That's not the code you're running (it wouldn't compile, even as a single method)That's exactly why I asked about the "n" ;-)
ASKER
@Alex140181 Ok, my fault. I've edited the code by declaring and initializing n with value 2. Please check and tell now why it's skipping the line name = sc.nextLine() for 2nd iteration of for loop now.
I'll comment when you post the code of that method such that it will compile. It just wastes everybody's time discussing code that is different from the real code
Even after adding the imports etc, the code will fail with:
I agree with CEHJ: as long as it doesn't compile, I won't comment either, sorry
Syntax error, insert "while ( Expression ) ;" to complete DoStatementI agree with CEHJ: as long as it doesn't compile, I won't comment either, sorry
ASKER
@CEHJ and @Alex140180 Ok, I've posted the full contents of the original method in my program. Please help me with this issue now.
for(int i = 0; i < n; i++){
System.out.println("Enter the name of customer "+(i+1)+": ");
name = sc.next();//java skips this line for 2nd iteration of for loop
sc.reset();
System.out.println("Enter the no. of unit(s) consumed: ");
units = sc.nextInt();
}ASKER
@krakatoa The solution you provided is working only for a name without spaces, otherwise it's giving error. I need to accept name with space, otherwise the program works fine.
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ASKER
Thanks for solving my issue for a 2nd time. This really is a great community!
What is "n" / where does it come from?!