simple_java_programs/Bills.java at main · georgejacob1/simple_java_programs · GitHub

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importjava.util.Scanner;

interfacecalc
{

voidcalculate();

}
classbillimplementscalc
{
Stringdate,name,p_id;
intquantity;
doubleunit_price,total,namount=0;
Scannersc = newScanner(System.in);
publicvoidgetdata()
 {
System.out.print("\nEnter product id:");
p_id = sc.nextLine();
System.out.print("Enter product name:");
name = sc.nextLine();
System.out.print("Enter the Quantity:");
quantity = sc.nextInt();
System.out.print("Enter the unit price:");
unit_price = sc.nextDouble();
 }
publicvoidcalculate()
 {
total = quantity * unit_price;
 }
publicvoiddisplay()
 { System.out.println(p_id+"\t\t"+name+"\t\t"+quantity+"\t\t"+unit_price+"\t"+total);
 }
}


publicclassBills
{
publicstaticvoidmain(Stringargs[])
 {
intn,i;
doublenamount=0,t;
intran;
Stringdate;
t = Math.random() *1000000;
ran = (int) t;
Scannersc = newScanner(System.in);
System.out.println("Order no. #"+ran);
System.out.print("Enter the date:");
date = sc.nextLine();
System.out.print("Enter how many products are there:");
n = sc.nextInt();
billob[] = newbill[n];
for(i=0;i<n;i++)
ob[i] = newbill();
for(i=0;i<n;i++){
ob[i].getdata();
ob[i].calculate();
 }
System.out.println("Date:"+date);
System.out.println("Product Id \tName\t Quantity\t unit price\t Total ");
System.out.println("--------------------------------------------------------------");
for(i=0;i<n;i++){
ob[i].display();
namount += ob[i].total;
 }
System.out.println("--------------------------------------------------------------");
System.out.println("\t\t\tNet.Amount\t"+ namount);

 }
}