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RAJWINDER
computer management
1 Answer(s)      4 years and 6 months ago
Posted in : Java Beginners


Create a class Computer that stores information about different types of Computers
available with the dealer. The information to be stored about a single computer is,
- Company Name
- RAM size.
- Hard Disk Capacity.
- Processor Speed.
- Processor Make.
- Price .
- Quantity of the Computers.

This class contains following methods,
- Constructor method that assigns user input values to above
mentioned variables.

- main ( ) method that creates array of 4 objects of Computer
class and that takes input for all above details from the user and
calls method to check validity of Quantity and Price values.
If all values are valid then create the objects and display the details
for all 4 toys.

- Method that checks validity of quantity and price.
If the quantity is 0 or negative then method should throw user defined
exception with appropriate message and come out of program.
Similarly if the price is 0 or negative then it should throw user defined
exception with appropriate message and come out of program.

- Method that displays all details about a single instance of Computer in the
following
Format.

Computer Name : IBM
RAM Size : 512 MB
Processor Make : Intel
Processor speed : 300
Quantity : 50
Total Price of Computers : 150,0000/-
*/

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View Answers

April 23, 2010 at 4:45 PM


Hi Friend,

Please try the following code:

import java.util.*;

public class Computer{
static String name;
static int size;
static int speed;
static String make;
static double price;
static int quantity;
public Computer(String n,int s,int sp,String m,double p,int q){
name=n;
size=s;
speed=sp;
make=m;
price=p;
quantity=q;
}
public String getName(){
return name;
}
public int getSize(){
return size;
}
public int getSpeed(){
return speed;
}
public String getMake(){
return make;
}
public double getPrice(){
return price;
}
public int getQuantity(){
return quantity;
}
public void valid(){
if((price==0)||(price<0)){
System.out.println("Please enter price");
System.exit(0);
}
else if((quantity==0)||(quantity<0)){
System.out.println("Please enter quantity ");
System.exit(0);
}
else{
displayData();
}
}
public void displayData(){
List<Computer> list = new ArrayList<Computer>();
list.add(new Computer(name,size,speed,make,price,quantity));
for (Computer s : list){
System.out.println("Computer Name: "+s.getName()+ "\nRAM Size :"+s.getSize()+"\nProcessor Make: "+s.getMake()+"\nProcessor Speed: "+s.getSpeed()+"\nQuantity: "+s.getQuantity()+"\nTotal Price of Computers: "+s.getPrice());
}
}
public static void main(String[]args){
System.out.println("Enter details");
Scanner input=new Scanner(System.in);
System.out.println("Computer Name: ");
name=input.next();
System.out.println("RAM Size: ");
size=input.nextInt();
System.out.println("Processor Speed: ");
speed=input.nextInt();
System.out.println("Processor Make: ");
make=input.next();
System.out.println("nQuantity: ");
quantity=input.nextInt();
System.out.println("Price: ");
price=input.nextDouble();
Computer c=new Computer(name,size,speed,make,price,quantity);
c.valid();
}
}

Thanks


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