JAVA PROGRAMS CỦA HÓA ĐƠN BÁN HÀNG.

NHỮNG HÓA ĐƠN BÁN HÀNG CÓ SALE TAX.

 1-Receipt of one item.

 public class Purchase {

 // We declare constant outside of main;all methods can access to it.

  final static double TAX_RATE = .08;

  public static void main(String[] args) {

      double itemprice = 10.25;

     // We calculate the total price here.

      double finalprice = itemprice*(1+TAX_RATE);

    System.out.println(" Your purchase  cost : "+finalprice+" with tax.");

} }

SUCCESS.

Compilation time: 0.94 sec, absolute running time: 0.24 sec,

cpu time: 0.12 sec, memory peak: 23 Mb, absolute service time: 1.19 sec

Output. Your purchase cost 11.07 with tax.

2-Receipt of 2 items.

class Rextester{  

  final static double TAX_RATE = 0.08;

  public static void main(String[] args) {

     double item1price = 10.25,item2price = 5.25,item3price = 2.25;

     double finalprice = (item1price+item2price+item3price)*(1+TAX_RATE);

 System.out.println("Your total purchase is:"+finalprice+" with tax.");

 }}

SUCCESS

Compilation time: 1.14 sec, absolute running time: 0.26 sec, 

cpu time: 0.13 sec, memory peak: 22 Mb, absolute service time: 1.41 sec

output

Your total purchase is:19.17 with tax.

3- Receipt for T-Shirts Shop.

    USING JAVA SCANNER

class ideone{

public static void main (String[] args) {

      System.out.println (" T-SHIRTS SHOP ESTABLISHED IN 1986 ");

      System.out.println (" Owner : Henry Baxao Xaoke ");

      System.out.println ("----------------------------------");

     int tsmall, tmed, tlarge, xlarge ;

     double price1 =1.5, price2 = 2.5, price3 = 3.25, price4= 3.75, total1, total2 ;

     Scanner scan = new Scanner (System.in);

     System.out.println (" *Muôn bao nhiêu Small,Medium,Large,Xlarge ? : ");

          tsmall = scan.nextInt(); tmed = scan.nextInt();

          tlarge = scan.nextInt(); xlarge = scan.nextInt();

System.out.println (" *Ban mua : " +tsmall+ " "+ "SM" +";"+tmed+" "+ "MD" +";"+tlarge+" " +"LG" +";"+ xlarge+ " " +"XLG");  

total1 =(tsmall*price1 + tmed*price2 + tlarge*price3 + xlarge*price4);

total2 =(tsmall*price1+ tmed*price2+ tlarge*price3+ xlarge*price4)*1.08;

System.out.printf (" *Giá tông công không có Tax :  %.2f%n ", total1);

System.out.printf (" *Giá tông công có Tax :  %.2f%n ", total2);

 System.out.println (" THANK YOU-CÁM ON" );

// Viết double total, nhưng nếu dùng format thì phải đổi ra %.2f%n mới chọn được // // những con số sau dấu chấm theo ý muốn.

}}

SUCCESS.

Outpt.

T-SHIRTS SHOP ESTABLISHED IN 1986 

 Owner : Henry Baxao Xaoke 

----------------------------------

 *Muôn bao nhiêu Small,Medium,Large,Xlarge ? : 

 *Ban mua : 8 SM;6 MD;4 LG;2 XLG

 *Giá tông công không có Tax :  47.50

  *Giá tông công có Tax :  51.30

  THANK YOU-CÁM ON

4-Receipt Written With Java Formatting.

       Using Java Formatter.

        class Rextester{      

       private double total = 0;

       private double total2 = 0;

       private Formatter f = new Formatter(System.out);

      

       public void printTitle(){

        f.format("%-15s %10s %15s \n", "ITEM", "QTY","PRICE");

        f.format("%-15s %10s %15s \n", "----","----" ,"----");}

       public void print(String name, int qty, double price){  

        f.format("%-15s %10d %15.2f \n", name, qty, price);total+=qty;

        total2+=price; }

      

       public void printTotal(){

       f.format("%-15s %10s %15.2f\n", "TAX", "   " , total2*0.08);

       f.format("%-15s %10s %15s\n",    "   ",  "----", "----");

       f.format("%-15s %10.1s %15.2f\n", "TOTAL", total, total2*1.08);}

       

       public static void main(String[] args){

       receipt.printTitle();

       receipt.print("T-shirts small ", 4, 12.00);

       receipt.print("Ceramic spoons", 2, 2.50);

       receipt.print("Plastic bucket",1, 4.25);

       receipt.print("Aluminium foil",2, 2.50);

       receipt.print("Saran", 2, 5.00);

       receipt.printTotal();

}}

SUCCESS . Compilation time: 0.73 sec, absolute running time: 0.14 sec,

cpu time: 0.06 sec, memory peak: 18 Mb,absolute service time: 0.88 sec

Output.

ITEM                   QTY           PRICE 

----                  ----            ---- 

T-shirts small           4           12.00 

Ceramic spoons           2            2.50 

Plastic bucket           1            4.25 

Aluminium foil           2            2.50 

Saran                    2            5.00 

TAX                                   2.10

                      ----            ----

TOTAL                   11           28.35

Creating Your Own Java Methods and Passing Values to Them

I-Tự Tạo Một Java Method Và Passing Values Vào Method Đã Tạo.

1.1- Tự tạo method để cộng các con số tăng liên tục total +=i.

class rextester{

public static void printTotal(){  // tự tạo method nầy và phải co static

int total = 0;

for(int i = 1 ; i<=6; i++){

total +=i ;

System.out.println(total);}

}

public static void main(String[] args){

             printTotal();} // call method đã tự tạo

}

SUCCESS.

Output.

Compilation time: 1.03 sec, absolute running time: 0.14 sec,

cpu time: 0.11 sec, memory peak: 23 Mb, absolute service time: 1.19 sec

1

3

6

10

15

21

    

1.2- PASSING VALUES TO THE PARAMETERS OF JAVA METHOD

     * Value là integer

class rextester{

public static void passMethod(int x){ // tự tạo method nầy và phải có static

System.out.println("Passed value is :" + x ); }

public static void main(String[] args) {

      int x = 5; 

      passMethod(x); } // call và pass integer vào method đã tạo

}

SUCCESS.

Output.

Compilation time: 1.04 sec, absolute running time: 0.14 sec,

cpu time: 0.09 sec, memory peak: 22 Mb, absolute service time: 1.19 sec

Passed value is :5

  * Value là string

class rextester{

 public static void passMethod(String str){

System.out.println("Passed value is :" + str ); }

public static void main(String[] args) {

      String str = "Hello My Friends"; 

      passMethod(str); } // call và pass string vào method đã tạo

}

 SUCCESS.

Output.

Compilation time: 0.94 sec, absolute running time: 0.24 sec, 

cpu time: 0.12 sec, memory peak: 23 Mb, absolute service time: 1.18 sec

 Passed value is :Hello My Friends

* Value là  name

class rextester{

      public static void Person(String name){ // tự tạo method nầy.

      System.out.println("Passed Name is :" + name ); }

      public static void main(String []args){

     String name= "Henry";

              Person(name);}  // call và pass string vào method đã tạo          

}

SUCCESS.

Output.

Compilation time: 1.03 sec, absolute running time: 0.15 sec,

cpu time: 0.1 sec, memory peak: 23 Mb, absolute service time: 1.18 sec

Passed Name is :Henry

II-Tư tạo nhiều methods và pass data vào những methods đã tạo.

 2.1

      class Rextester{ 

     public static void Employee(String name){

         System.out.println("Name:"+ name );}

     public static void empAge(int x){

         System.out.println("Age:" + x );}

     public static void main(String args[]){

         String name =  "Xaoke";int x =26;

         Employee(name);empAge(x); }

     }

SUCCESS.

Output. Compilation time: 0.94 sec, absolute running time: 0.14 sec,

cpu time: 0.09 sec, memory peak: 23 Mb, absolute service time: 1.09 sec

Name:Xaoke

Age:26

2.2

    class Rextester{ 

 public static void Test(String name,int x,String skill){

System.out.println(name +" "+ x +" "+ skill);}

public static void main(String[] args){

String name= "Henry"; int x=26; String skill="Programmer";

Test(name,x,skill);}

}

SUCCESS.

output

Compilation time: 0.84 sec, absolute running time: 0.13 sec,

 cpu time: 0.06 sec, memory peak: 18 Mb, absolute service time: 0.98 sec

Henry 26 Programmer

2.3

 class Rextester{ 

 public static void Test1(String name1,int x1,String skill1){

 System.out.println(name1 +" "+ x1 +" "+ skill1);}

 public static void Test2(String name2,int x2,String skill2){

 System.out.println(name2 +" "+ x2 +" "+ skill2);}

  public static void main(String[] args){

String name1= "Henry"; int x1=26; String skill1="Programmer";

String name2= "Pano"; int x2=69; String skill2="Engineer";

Test1(name1,x1,skill1);Test2(name2,x2,skill2); }

}

SUCCESS.

output

Compilation time: 0.83 sec, absolute running time: 0.13 sec,

 cpu time: 0.06 sec, memory peak: 18 Mb, absolute service time: 0.97 sec

Henry 26 Programmer

Pano 69 Engineer

*********************************