Java Main Project for ICSE Class 10 (An Example)

Acknowledgement

The success and final outcome of this project required a lot of guidance and assistance from many people and I am extremely fortunate to have got this all along the completion of my project work. Whatever I have done is only due to such guidance and assistance and I would not forget to thank them.

I owe my profound gratitude to our project guide (SUBJECT TEACHER’S NAME)ma’am, who took keen interest on our project work and guided us all along, till the completion of our project work by providing all the necessary information for developing a good system.

I am thankful to and fortunate enough to get constant encouragement, support and guidance from all Teaching staffs of Department of computer science which helped us in successfully completing our project work. Also, I would like to extend our sincere regards to all the non-teaching staff of department of computer science for their timely support.

(YOUR NAME)

Introduction

Java is a general-purpose computer programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible. It is intended to let application developers "write once, run anywhere" (WORA), meaning that code that runs on one platform does not need to be recompiled to run on another. Java applications are typically compiled to bytecode that can run on any Java virtual machine (JVM) regardless of computer architecture. Java is, as of 2014, one of the most popular programming languages in use, particularly for client-server web applications, with a reported 9 million developers. Java was originally developed by James Gosling at Sun Microsystems (which has since merged into Oracle Corporation) and released in 1995 as a core component of Sun Microsystems' Java platform. The language derives much of its syntax from C and C++, but it has fewer low-level facilities than either of them.

The original and reference implementation Java compilers, virtual machines, and class libraries were originally released by Sun under proprietary licenses. As of May 2007, in compliance with the specifications of the Java Community Process, Sun relicensed most of its Java technologies under the GNU General Public License. Others have also developed alternative implementations of these Sun technologies, such as the GNU Compiler for Java(bytecode compiler), GNU Classpath (standard libraries), and IcedTea-Web (browser plugin for applets).

History of Java

James Gosling, Mike Sheridan, and Patrick Naughton initiated the Java language project in June 1991. Java was originally designed for interactive television, but it was too advanced for the digital cable television industry at the time. The language was initially called Oak after an oak tree that stood outside Gosling's office. Later the project went by the name Green and was finally renamed Java, from Java coffee, said to be consumed in large quantities by the language's creators. Gosling designed Java with a C/C++-style syntax that system and application programmers would find familiar.

Sun Microsystems released the first public implementation as Java 1.0 in 1995. It promised "Write Once, Run Anywhere" (WORA), providing no-cost run-times on popular platforms. Fairly secure and featuring configurable security, it allowed network- and file-access restrictions. Major web browsers soon incorporated the ability to run Java applets within web pages, and Java quickly became popular.

The Java 1.0 compiler was re-written in Java by Arthur van Hoff to comply strictly with the Java 1.0 language specification. With the advent of Java 2 (released initially as J2SE 1.2 in December 1998 – 1999), new versions had multiple configurations built for different types of platforms. J2EE included technologies and APIs for enterprise applications typically run in server environments, while J2ME featured APIs optimized for mobile applications. The desktop version was renamed J2SE. In 2006, for marketing purposes, Sun renamed new J2 versions as Java EE, Java ME, and Java SE, respectively.

In 1997, Sun Microsystems approached the ISO/IEC JTC 1 standards body and later the Ecma International to formalize Java, but it soon withdrew from the process.Java remains a de facto standard, controlled through the Java Community Process. At one time, Sun made most of its Java implementations available without charge, despite their proprietary software status. Sun generated revenue from Java through the selling of licenses for specialized products such as the Java Enterprise System.

On November 13, 2006, Sun released much of Java as free and open-source software, (FOSS), under the terms of the GNU General Public License (GPL). On May 8, 2007, Sun finished the process, making all of Java's core code available under free software/open-source distribution terms, aside from a small portion of code to which Sun did not hold the copyright.

Sun's vice-president Rich Green said that Sun's ideal role with regards to Java was as an "evangelist". Following Oracle Corporation's acquisition of Sun Microsystems in 2009–2010, Oracle has described itself as the "steward of Java technology with a relentless commitment to fostering a community of participation and transparency". This did not prevent Oracle from filing a lawsuit against Google shortly after that for using Java inside the Android SDK.

Java software runs on everything from laptops to data centers, game consoles to scientific supercomputers. There are 930 million Java Runtime Environment downloads each year and 3 billion mobile phones run Java. On April 2, 2010, James Gosling resigned from Oracle.

Features of Java

There is given many features of java. They are also known as java buzzwords. The Java Features given below are simple and easy to understand.

1. Simple

2. Object-Oriented

3. Platform independent

4. Secured

5. Robust

6. Architecture neutral

7. Portable

8. Dynamic

9. Interpreted

10. High Performance

11. Multithreaded

12. Distributed

CODE

//AUTHOR OF THE PROJECT: Mrunal.N.C

import java.io.*; //Importing java.io package

import java.util.*; //Importing java.util package

import java.net.*; //Importing java.net package

import java.awt.*; //Importing java.awt package

import java.nio.*; //Importing java.nio package

import java.math.*; //Importing java.math package

public class Bill

{

String item[]={" Full Meals "," Dum Aloo "," Dosa "," Naan "," Palak Paneer "," Dal "," Mini Meals "," Samosa "," Fried Rice ","Chana Masala "};

//Variable to store food items

double rate[]={200,75,35,45,75,55,155,20,40,65};

//Variable to store cost of food items

String order[]=new String[10]; //Creating an Array of Base Type String and of length 10

double amt[]=new double[10]; //Creating an Array of Base Type double and of length 10

String ans; // Variable to store answer that is, any more items are required by the user or not

char ch;

// Variable to store the answer whether the applicarion has to be continued or not

int plates[]=new int[10]; //Creating an Array of Base Type int and of length 10

int i,n=0,no,x=0;

static Bill object =new Bill(); //Creating an object of Bill type

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

Bill() //A default Constructor

{

}

public void putOrder()throws Exception //A function putOrder returning no value(void return type)with a public access specifier

{

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

System.out.println(" Four Seasons Hotel ");

System.out.println(" Menu Card "); //Displaying the MENU

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

System.out.println(" Item No. Item Rate/plate");

for(i=0;i< 10;i++)

{

System.out.println(" "+(i+1)+ ": "+item[i]+" "+rate[i]);

}

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

{

System.out.println(" \n Enter item number from 1 to 10 to place order\n");

}

x=0;

while(true)

{

if(x==10)

break;

Scanner sc=new Scanner(System.in);

System.out.print(" Please enter the item number :");

no=sc.nextInt();

order[x]=item[no-1];

amt[x]=rate[no-1];

System.out.print(" Please Enter the number of plates :");

no=Integer.parseInt(br.readLine());

plates[x]=no;

x++;

if(x>0)

{

System.out.print(" Any More Item ?(Y/N):");

ans=br.readLine().toUpperCase();

if(ans.equals("N"))

break;

}

showBill();

}

//putOrder function ends here

private void showBill() throws Exception

{

double bamt=0,b;

System.out.println("\f");

System.out.println(" You have ordered\n");

System.out.println(" Item Rate No. of Plates");

for(i=0;i< x;i++)

{

System.out.println(" "+(i+1)+":"+order[i]+" "+amt[i]+" "+plates[i]);

}

while(true)

{

if(x< 2)

break;

System.out.print(" Want to cancel any item (Y/N):");

ans=br.readLine().toUpperCase();

if(ans.equals("N"))

break;

//If the user wants to cancell any item

System.out.print(" Which item to cancel, enter item number:");

no=Integer.parseInt(br.readLine());

for(i=no-1;i< x-1;i++)

{

order[i]=order[i+1];

amt[i]=amt[i+1];

plates[i]=plates[i+1];

}

x--;

}

//Displaying Bill

System.out.println("\f");

System.out.println(" Cash Memo\n");

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

System.out.println(" Four Seasons Hotel ");

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

System.out.println(" Item No. of plates Rate Amount");

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

for (i=0;i< x;i++)

{

System.out.print(" "+order[i]+ " "+plates[i]+ " "+ amt[i]+ " ");

b=plates[i]*amt[i];

System.out.println(b);

bamt=bamt+b;

}

System.out.println(" Bill Amount Rs. "+bamt);

System.out.println(" ____________________________________________________________________________________");

bamt=bamt+bamt*.125;

System.out.println(" Total Amount including service charge @ 12.5% Rs. "+bamt);

System.out.println(" ____________________________________________________________________________________");

System.out.println(" THANK YOU VISIT AGAIN");

System.out.println(" Press any key to continue :");

String ab=br.readLine();

}

public static void main(String[]args)throws Exception

{

//Handling Exceptions

do{

try{

object.n=0;

object.i=0;

object.no=0;

object.ans="";

for(int y=0;y<10;y++)

{

object.order[y]="";

object.amt[y]=0;

object.plates[y]=0;

}

object.putOrder(); //Calling the function putOrder

System.out.print("\f"); //Clearing the Screne

}

catch(ArithmeticException e1)

{

System.out.println("Sorry some problem has occured");

}

catch(ArrayIndexOutOfBoundsException e2)

{

System.out.println(" Sorry we dont have such item");

}

catch(NumberFormatException e3)

{

System.out.println(" The input was not a number therfore an error has occured ");

}

catch(ArrayStoreException e4)

{

System.out.println(" Sorry some problem has occured" );

}

catch(ClassCastException e5)

{