Chapter 4 Loop logic and using loop logic for File Input/0utput. 1. Read Chapter 4 sections...
Chapter 4 Loop logic and using loop logic for File Input/0utput.
1. Read Chapter 4 sections 4.10 until end of chapter.
2. Review Questions and Exercises, short answers.
3. [20 points] submit SalaryCalcLoopFile.java
Let's update our program, SalaryCalcLoop.java, from last week, to now take input about each employee from a file and write their information and salary/pay information to a file.
use input file,
where each employee has name,shift,hours worked,hourly rate:
EmployeePayroll.txt
output file should be named: EmployeePayStubs.txt
EmployeePayroll.txt
Rashid
night
60
20
Chin
day
30
15
Tran
day
45
10
Deeshan
night
55
11.50
Serena
day
24
10
Deepak
day
66
12
Tyrone
night
11
18
Andre
night
80
15
Annotations
SalaryCalcLoop.java
import java.util.Scanner;
public class
SalaryCalcLoop{
double Rpay = 0, Opay = 0;
void calPay(double
hours, double rate) {
if (hours <= 40) {
Rpay = hours * rate;
Opay = 0;
} else {
double Rhr, Ohr;
Rhr = 40;
Ohr = hours - Rhr;
Rpay = Rhr * rate;
Opay = Ohr * (1.5 * rate);
}
}
public static void
main(String[] args) {
Scanner sc = new Scanner(System.in);
String name;
int shift = 0;
Double rate, hours;
System.out.println("Pay Calculator");
String ch = "";
//added loop here
to take the inputs repetedly
while(true)
{
System.out.println("Enter Your Name(Type 'quit' to exit):
");
name = sc.next();
if (name.equals("quit"))
{
break; // exit infinite loop
}
System.out.println("Enter Your Shift, Enter 0 for Day, Enter1 for
Night");
System.out.println("0=Day, 1= Night");
shift=sc.nextInt();
System.out.println("Enter Number of Hours Worked: ");
hours = sc.nextDouble();
System.out.println("Enter Hourly Pay: ");
rate = sc.nextDouble();
SalaryCalcLoop c = new SalaryCalcLoop();
c.calPay(hours, rate);
Double Tpay = c.Rpay + c.Opay;
System.out.println();
System.out.println("Calculate Pay");
System.out.println("Employee Name: " + name);
System.out.println("Employee Regular Pay: " + c.Rpay);
System.out.println("Employee Overtime Pay: " + c.Opay);
System.out.println("Employee Total Pay: " + Tpay);
if (shift == 0) {
System.out.println("Employee PayPeriod is Friday");
} else {
System.out.println("Employee PayPeriod is Saturday");
}
}
}
}
Homework Answers
code is implemented java
Reading from file and writing into file
SalaryCalcLoopFile.java
import java.util.Scanner;
import java.io.*;
public class SalaryCalcLoopFile{
double Rpay = 0, Opay = 0;
void calPay(double hours, double rate) {
if (hours <= 40) {
Rpay = hours *
rate;
Opay = 0;
} else {
double Rhr,
Ohr;
Rhr = 40;
Ohr = hours -
Rhr;
Rpay = Rhr *
rate;
Opay = Ohr *
(1.5 * rate);
}
}
public static void main(String[] args) throws
Exception{
Scanner sc = new
Scanner(System.in);
String name;
int shift = 0;
Double rate, hours;
BufferedReader objReader=new
BufferedReader(new FileReader("EmployeePayroll.txt"));
BufferedWriter fw = new
BufferedWriter(new FileWriter("EmployeePayStubs.txt"));
fw.write("Pay Calculator\n");
String ch =
"",strCurrentLine="";
while ((strCurrentLine =
objReader.readLine()) != null) {
name=strCurrentLine;
strCurrentLine =
objReader.readLine();
if(strCurrentLine.equals("night")){
shift=1;
}else{
shift=0;
}
strCurrentLine =
objReader.readLine();
hours=Double.parseDouble(strCurrentLine);
strCurrentLine =
objReader.readLine();
rate=Double.parseDouble(strCurrentLine);
SalaryCalcLoop c
= new SalaryCalcLoop();
c.calPay(hours,
rate);
Double Tpay =
c.Rpay + c.Opay;
fw.write("Calculate Pay");
fw.write("\n");
fw.write("Employee Name: " + name);
fw.write("\n");
fw.write("Employee Regular Pay: " + c.Rpay);
fw.write("\n");
fw.write("Employee Overtime Pay: " + c.Opay);
fw.write("\n");
fw.write("Employee Total Pay: " + Tpay);
fw.write("\n");
if (shift == 0)
{
fw.write("Employee PayPeriod is Friday");
} else {
fw.write("Employee PayPeriod is Saturday");
}
fw.write("\n");
}
fw.close();
}
}
SalaryCalcLoopFile.java
EmployeePayroll.txt
EmployeePayStubs.txt
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