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Showing posts with label GTU Java Practical. Show all posts
Showing posts with label GTU Java Practical. Show all posts

Monday, 5 September 2016

Write a program of an array of object of room class to get, calculate and display the information

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In this program, Room class is used for get details from the user and calculate amount of room charge and display details. Here member variables and member function is like this,

Member variable : roomNo, roomType, roomChargePerDay, roomAllocatedDays, totalPayment
Member Function : getRoomData() , calculatePayment() , displayRoomData()

getRoomData() is used to get all details from the user. calculatePayment() is used calculate all the task which fill up in details. displayRoomData() is used to display all the details with calculations.

Step of Execute Program :

 1) Open Command Prompt
2) Set Path
3) Compile File     //javac room.java
4) Run File           // java room1
5) Fill the Details

File Name : room.java



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import java.io.*;
class room
{
 private int roomNo;
 private int roomType;
 private double roomChargePerDay;
 private int roomAllocatedDays;
 private double totalPayment;
 room()
 {
  this.roomNo=0;
  this.roomChargePerDay=0;
  this.roomAllocatedDays=0;
  this.totalPayment=0;
 }
 public void getRoomData(int roomNo,int roomType,double roomChargePerDay,int roomAllocatedDays)
 {
  this.roomNo=roomNo;
  this.roomType=roomType;
  this.roomChargePerDay=roomChargePerDay;
  this.roomAllocatedDays=roomAllocatedDays;

   this.calculatePayment();
 }
 private void calculatePayment()
 {
  this.totalPayment=roomChargePerDay*roomAllocatedDays;
 }
 public void displayRoomData()
 {
  if (roomType==1)
  {
   System.out.println("----------------------------------------------------------------------\n");
   System.out.println("Room No: " + roomNo + "\n");
   System.out.println("Room Type : Regular");
   System.out.print("Room Charges:" + roomChargePerDay);
   System.out.println("\t\t\t Allocated Days : " + roomAllocatedDays+"\n");
   System.out.println("\t \t \t Total charges : " + totalPayment);
   System.out.println("--------------------------------------------------------------------------\n");

   }
  else if (roomType==2)
  {
   System.out.println("----------------------------------------------------------------------\n");
   System.out.println("Room No: " + roomNo + "\n");
   System.out.println("Room Type : Delux");
   System.out.print("Room Charges:" + roomChargePerDay);
   System.out.println("\t\t\t Allocated Days : " + roomAllocatedDays+"\n");
   System.out.println("\t \t \t Total charges : " + totalPayment);
   System.out.println("--------------------------------------------------------------------------\n");

   }
  else if(roomType==3)
  {
   System.out.println("----------------------------------------------------------------------\n");
   System.out.println("Room No: " + roomNo + "\n");
   System.out.println("Room Type : Super Delux");
   System.out.print("Room Charges:" + roomChargePerDay);
   System.out.println("\t\t\t Allocated Days : " + roomAllocatedDays+"\n");
   System.out.println("\t \t \t Total charges : " + totalPayment);
   System.out.println("--------------------------------------------------------------------------\n");

   }
  else
  {
   System.out.println("Wrong Input");
  }
 }

}
class room1
{
 public static void main(String[] args)
 {
       
  try
  {

    DataInputStream in = new DataInputStream(System.in);


    System.out.print("\nHow many rooms allocating :");
   int roomAllocate=Integer.parseInt(in.readLine()); 
 
   room r[]=new room[roomAllocate];

    for(int i=0;i<roomAllocate;i++)
   {
    r[i]=new room();
    System.out.println("\n\t\t::::::::::Room Information Form::::::::::\n");
  
    System.out.print("Enter Room No.: ");
    int roomNo=Integer.parseInt(in.readLine());

     System.out.println("Select Room Type:-\n 1. Regular\n 2. Delux\n 3. Super Delux");
    int roomType=Integer.parseInt(in.readLine());
 
    System.out.print("Enter Room Charges Per Day: ");
    double roomChargesPerDay=Double.parseDouble(in.readLine());

     System.out.print("Enter Room Allocated Days: ");
    int roomAllocatedDays=Integer.parseInt(in.readLine());
  
    r[i].getRoomData(roomNo,roomType,roomChargesPerDay,roomAllocatedDays);

    }

    for(int i=0;i<roomAllocate;i++)
    r[i].displayRoomData();
  }
  catch(IOException e)
  {
   System.out.println("Something Goes Wrong...");
   System.out.println(e.getMessage());
  }
 }
}






Output :

 array object of room class

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Write a program to find out the second largest value from the N values Stored in array

Author:  |   |  No Comments | 

In this program, code is explain about to find out the second largest value from the array. First , user must set the limit of the array. Then enter value in array. Which value is second largest from the array it will display at the end. In this program, for loop is used to find second largest value. User can also any looping structure if they don't want use for loop.

Step for Execute Program :

 1) Open Command prompt
2) Set Path
3) Compile File     // javac SecondLargeArray.java
4) Run File           //java SecondLargeArray
5) Fill the Details



File Name : SecondLargeArray.java


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import java.io.*;
class SecondLargeArray
{
 public static void main(String []s) throws Exception
 {
  int n ,second=0,temp;

   DataInputStream da=new DataInputStream(System.in);
  
  System.out.println("Enter length of array :");  
  n=Integer.parseInt(da.readLine());
  
  int []arr1=new int[n];
  System.out.println("Enter value of array :");  
  for(int i=0;i<n;i++)
  {
   arr1[i]=Integer.parseInt(da.readLine()); 
  }
  for(int i=0;i<n;i++)
  {
   for(int j=i+1;j<n;j++)
   {
    if(arr1[i]>arr1[j])
    {
     temp=arr1[i];
     arr1[i]=arr1[j];
     arr1[j]=temp; 
    }
   }
  }

   second=arr1[n-1];
  for(int i=n-1;i>=0;i--)
  {
   if(arr1[i]<second)
   {
    System.out.println("Second Largest value :"+arr1[i]);
    break;
   }
  }

  }
}





Output :

 Second Largest Value from Array

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Write a program to perform matrix addition operation in java

Author:  |   |  No Comments | 

In this program, Take the row and column value from the user and perform addition of the matrix. User can add more than one row and one column. Here explain the code and display the output of the program in given below.

Step of Execute Program :

1) Open Command prompt
2) Set path
3) Compile File // javac matrix.java
4) Run File // java matrix
5) Fill the Details


File Name : matrix.java

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import java.io.*;
class matrix
{
 public static void main(String args[])throws Exception
 {
  int n,i,j,r,c;
  
  DataInputStream dis=new DataInputStream(System.in);

   System.out.println();
  System.out.println();
  System.out.print("enter The Number Of rows :-    ");
  r=Integer.parseInt(dis.readLine());

   System.out.print("enter The Number Of Column :-    ");
  c=Integer.parseInt(dis.readLine());

   int arr1[][]=new int[r][c];
  int arr2[][]=new int[r][c];
  int arr3[][]=new int[r][c];

   System.out.println();
  System.out.println();

   for(i=0;i<r;i++)
  {
   for(j=0;j<c;j++)
   {
    System.out.print("Enter number for First Matrix [ "+(i)+" ] [

"+(j)+" ]    :-   ");
    arr1[i][j]=Integer.parseInt(dis.readLine());
   }
 
  }

   System.out.println();

   for(i=0;i<r;i++)
  {
   for(j=0;j<c;j++)
   {
    System.out.print("Enter number for Second Matrix [ "+(i)+" ] [

"+(j)+" ]    :-   ");
    arr2[i][j]=Integer.parseInt(dis.readLine());
   }
 
  }

   System.out.println();

   for(i=0;i<r;i++)
  {
   for(j=0;j<c;j++)
   {
    arr3[i][j]=arr1[i][j]+arr2[i][j];
   }
 
  }

   for(i=0;i<r;i++)
  {
   for(j=0;j<c;j++)
   {
    System.out.println("Addition of Two Matrix is  [ "+(i)+" ] [ "+(j)+"

]    :-   "+arr3[i][j]);
   }
  }
  System.out.println();
 }
}



Output :

Matrix Addition in Java

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Write a Program to calculate the marksheet of students

Author:  |   |  No Comments | 


This example is about built a marksheet of student using java. In this example,
Member Variable : roll_no, sub1, sub2, sub3, sub4, sub5, total, avg
Member Function : getStudentData() , calculateTotal() , calculateAvg(), displayStudentData()

getStudentData() function is used to get all information for the student. calculateTotal() function is used to calculate total of all subjects of marks. calculateAvg() function is used to count average of all subjects. displayStudentData() function is used to display the student information.


File Name : studDetail.java

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import java.io.*;
class stud
{
 int roll_no,sub1,sub2,sub3,sub4,sub5,total,avg;
 String name;

  public void getStudentData() throws Exception
 {
  System.out.println("Enter Roll No. :-");
  DataInputStream in = new DataInputStream(System.in);
  roll_no = Integer.parseInt(in.readLine());

   System.out.println("Enter Name :-");
  name = in.readLine();

     
  System.out.println("Enter Subject 1 Mark :-");
  sub1 = Integer.parseInt(in.readLine());

   System.out.println("Enter Subject 2 Mark :-");
  sub2 = Integer.parseInt(in.readLine());

   System.out.println("Enter Subject 3 Mark :-");
  sub3 = Integer.parseInt(in.readLine());

   System.out.println("Enter Subject 4 Mark :-");
  sub4 = Integer.parseInt(in.readLine());

   System.out.println("Enter Subject 5 Mark :-");
  sub5 = Integer.parseInt(in.readLine());

   
 }

  public void calculateTotal() throws Exception
 {
  total = sub1+sub2+sub3+sub4+sub5;
  
 }

  
 public void calculateAvg() throws Exception
 {
  avg = total/5;
  
 }

  public void displayStudent() throws Exception
 {
  System.out.println("Roll No. :"+roll_no);
  System.out.println("Name :"+name);
  System.out.println("Subject 1 Mark :"+sub1);  
  System.out.println("Subject 2 Mark :"+sub2);
  System.out.println("Subject 3 Mark :"+sub3);
  System.out.println("Subject 4 Mark :"+sub4);
  System.out.println("Subject 5 Mark :"+sub5);
  System.out.println("Total :"+total);
  System.out.println("Average :"+avg);
 }
 
}

class studDetail
{
 public static void main(String args[]) throws Exception
 {
  stud s1 = new stud();
  s1.getStudentData();
  s1.calculateTotal();
  s1.calculateAvg();
  s1.displayStudent();
 }
}
//put details like this
Output :
Enter Roll No. :- 1
Enter Name :- XYZ
Enter Subject 1 Mark : 70
Enter Subject 2 Mark : 80
Enter Subject 3 Mark : 90
Enter Subject 4 Mark : 60
Enter Subject 5 Mark : 50
//display information like this format

 Roll No. :1
Name :XYZ
Subject 1 Mark : 70
Subject 2 Mark : 80
Subject 3 Mark : 90
Subject 4 Mark : 60
Subject 5 Mark : 50
Total : 350
Average : 70

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Friday, 2 September 2016

Write a Program to calculate the area of rectangle

Author:  |   |  No Comments | 

In this tutorial , we are learning that how to calculate area of the rectangle in java.

The programmer asks users for the length and width values and then output will be calculated and display on console. DataInputStream is used for read primitive java data types from an underlying input stream.

Integer.parseInt() is used to convert data into Integer format.

File Name : RecArea.java


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import java.io.*;
class area
{
 int length,breadth,area;

 public void getRectangleData() throws Exception
 {
  System.out.println("Enter Length :");
  DataInputStream in = new DataInputStream(System.in);
  length = Integer.parseInt(in.readLine());
  System.out.println("Enter Breadth :");
  breadth = Integer.parseInt(in.readLine());
  
 }

 public void calculateArea() throws Exception
 {
  area = length * breadth;
   
 }

 public void displayRectangleData() throws Exception
 {
  System.out.println("Length of the rectangle :"+length);
  System.out.println("Breadth of the rectangle :"+breadth);
  System.out.println("Area of the rectangle :"+area);
 }

}

class RecArea
{
 public static void main(String args[]) throws Exception
 {
  area a1 = new area();
  a1.getRectangleData(); 
  a1.calculateArea();
  a1.displayRectangleData();

 }
}

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