Slip20

 Q1) Write a Program to illustrate multilevel Inheritance such that country is inherited from continent. State is inherited from country. Display the place, state, country and continent. [10 marks] 

import java.io.*;

class Continent

{

   String con;

 

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

  

 void con_input() throws IOException

 {

       System.out.println("Enter Continent Name:  "); 

       con = r.readLine();    

 }

}

class Country extends Continent

{

 String cou ;

 void cou_input() throws IOException

 {

       System.out.println("Enter Country Name:  ");

       cou = r.readLine();    

 } 

}

 

class State extends Country

{

 String sta,place;

 void sta_input() throws IOException

 {

       System.out.println("Enter State Name:  ");

       sta = r.readLine(); 

System.out.println("Enter place Name:  ");

       place = r.readLine();

 }

 public static void main( String argsp[] )throws IOException

 {

  State s = new State();

s.con_input();

  s.cou_input();

  s.sta_input();

    System.out.println("Continent: "+s.con);

  System.out.println("Country: "+s.cou); 

  System.out.println("State: "+s.sta); 

System.out.println("Place: "+s.place);

 }

}

Q2) Write a package for Operation, which has two classes, Addition and Maximum. Addition has two methods add () and subtract (), which are used to add two integers and subtract two, float values respectively. Maximum has a method max () to display the maximum of two integers

//Addition.java

package operation;

public class Addition

{

public void add(int a,int b)

{

int c=a+b;

System.out.println("Addition of 2 integer is :"+c);

}

public void sub(float a,float b)

{

float s=a-b;

System.out.println("Substraction of 2 float values is :"+s);

}

}

//Maximum.java

package operation;

public class Maximum

{

public void max(int a,int b)

{

if(a>b)

System.out.println(a+" is Maximum number of"+a+" and "+b);

else

System.out.println(b+" is Maximum number of"+a+" and "+b);

}

}


//main program

import operation.*;

class Slip20_2

{

public static void main(String args[])

{

Addition a=new Addition();

a.add(2,6);

a.sub(20.40f,10.70f);

Maximum m =new Maximum();

m.max(25,30);

}

}


Comments

Post a Comment

Popular posts from this blog

Slip1

 Q1.  Write a Program to print all Prime numbers in an array of ‘n’ elements. (use command line arguments) import java.util.Scanner; public class Slip1_1 {      public static void main (String[] args)      {                int n=Integer.parseInt(args[0]);                boolean[] isPrime=new boolean[n];               int[] ar = new int [n];               Scanner in = new Scanner (System.in);               System.out.println("Enter the "+n+" elements of the array: ");               for(int i=0; i<n; i++)                  ar[i] = in.nextInt();               for(int i=0; i<ar.length; i++)   ...
Read more

Slip3

Q1 ) Write a program to accept ‘n’ name of cities from the user and sort them in ascending order. [10 marks] import java.util.Scanner; public class Slip3_1 {     public static void main(String[] args)      {         int n;         String temp;         Scanner s = new Scanner(System.in);         System.out.print("Enter number of names you want to enter:");         n = s.nextInt();         String names[] = new String[n];         Scanner s1 = new Scanner(System.in);         System.out.println("Enter all the names:");         for(int i = 0; i < n; i++)              names[i] = s1.nextLine();         for (int i = 0; i < n; i++)          {             for (...
Read more

Slip2

 Q1) Write a program to read the First Name and Last Name of a person, his weight and height using command line arguments. Calculate the BMI Index which is defined as the individual's body mass divided by the square of their height. (Hint : BMI = Wts. In kgs / (ht)2)  import java.util.Scanner; public class Slip2_1 {     public static void main(String[] args)      {         double wt, ht; String fname,lname; fname=args[0]; lname=args[1]; wt=Double.parseDouble(args[2]); ht=Double.parseDouble(args[3]); double bmi=wt/(ht*ht);         System.out.println("Person Name : "+fname+" "+lname);         System.out.println("BMI : "+bmi);     } }  Q2) Define a class CricketPlayer (name,no_of_innings,no_of_times_notout, totatruns, bat_avg). Create an array of n player objects .Calculate the batting average for each player using static method avg(). Define a static sort m...
Read more