Applet Test

Applet for Addition

Abstract class in Java

import java.util.Scanner;
abstract class Person{
    String name, city;
    Scanner sc=new Scanner(System.in);
}
class Emp extends Person{
    int empcode;
    float bsal;
    void get()
    {
        System.out.println("Enter employee name:");
        name=sc.nextLine();
        System.out.println("Enter city:");
        city=sc.nextLine();
        System.out.print("Enter employee code:");
        empcode=sc.nextInt();
        System.out.print("Enter basic salary:");
        bsal=sc.nextFloat();
    }
    void disp()
    {
        System.out.println("Employee name:"+name);
        System.out.println("City:"+city);
        System.out.println("Employee Code:"+empcode);
        System.out.println("Basic Salary:"+bsal);
    }
}
class Stu extends Person{
    int roll;
    String course;
    void get()
    {
        System.out.println("Enter student name:");
        name=sc.nextLine();
        System.out.println("Enter city:");
        city=sc.nextLine();
        System.out.print("Enter course:");
        course=sc.nextLine();
        System.out.print("Enter roll:");
        roll=sc.nextInt();
    }
    void disp()
    {
        System.out.println("Student name:"+name);
        System.out.println("City:"+city);
        System.out.println("Roll:"+roll);
        System.out.println("Course:"+course);
    }
}
public class Abs{
    public static void main(String args[])
    {
        Emp obj1=new Emp();
        Stu obj2=new Stu();
        obj1.get();
        obj2.get();
        obj1.disp();
        obj2.disp();
    }
}

Factorial by recursion using static method

package Rahul;
import java.util.Scanner;
public class Fact {
    static int fact(int num)
    {
        if(num==0)
            return 1;
        else
            return(num*fact(num-1));
    }
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        System.out.print("Enter number:");
        int n=sc.nextInt();
        System.out.print("Factorial of "+n+"="+Sec.fact(n));
    }
}

Inheritance in Java

import java.io.*;
class Student {
    String n,c,s;
    int r,sem;
    Student(){};
    void get(String name, String cou, String ses, int roll, int seme)
    {
        n=name;
        c=cou;
        s=ses;
        r=roll;
        seme=sem;
    }
    void display(){System.out.println("Name: "+n+"\nCourse: "+c+"\nSession: "+s+"\nRoll: "+r+"\nSemester: "+sem);}
}
class Marks extends Student{
    int m[]=new int[3];
    Marks()
    {
        super();
        m[0]=m[1]=m[2]=0;
    }
    void get(int marks[])
    {
        m[0]=marks[0];
        m[1]=marks[1];
        m[2]=marks[2];
    }
    void display()
    {
        Student:display();
        System.out.println("Makrs:\n"+m[0]+"\t"+"\t"+m[1]+"\t"+m[2]);
    }
}
class Main{
        public static void main(String args[])throws IOException
    {
        InputStreamReader ni=new InputStreamReader(System.in);
        BufferedReader in=new BufferedReader(ni);
        Marks obj1=new Marks();
        System.out.print("Enter Student's name:");
        String name=String.valueOf(in.readLine());
        System.out.print("Enter course:");
        String cou=String.valueOf(in.readLine());
        System.out.print("Enter session:");
        String ses=String.valueOf(in.readLine());
        System.out.print("Enter roll number:");
        int roll=Integer.parseInt(in.readLine());
        System.out.print("Enter semester:");
        int seme=Integer.parseInt(in.readLine());
        obj1.get(name,cou,ses,roll,seme);
        System.out.print("Enter marks of three subjects:");
        int marks[]=new int[3];
        marks[0]=Integer.parseInt(in.readLine());
        marks[1]=Integer.parseInt(in.readLine());
        marks[2]=Integer.parseInt(in.readLine());
        obj1.get(marks);
        obj1.display();
    }
}

Calculating GCD of two numbers using Java

class GCD{
        public static void main(String args[])
        {
                int gcd=1;
                int n1=Integer.parseInt(args[0]);
                int n2=Integer.parseInt(args[1]);
                int num=n1<n2?n1:n2;
                if(num==1)
                        System.out.println("GCD of "+n1+" and "+n2+"="+gcd);
                else       
                {
                        for(int i=2;i<=num/2;i++)
                                if(n1%i==0&&n2%i==0)
                                        gcd=i;
                        System.out.println("GCD of "+n1+" and "+n2+"="+gcd);
                }
        }
}

Calculating roots of quadratic equation using Java

class Quad{
        public static void main(String args[])
        {
                int a,b,c;
                double d,r1,r2;
                a=Integer.parseInt(args[0]);
                b=Integer.parseInt(args[1]);
                c=Integer.parseInt(args[2]);
                d=b*b-4*a*c;
                if(d==0)
                {
                        r1=-b+Math.sqrt(d)/(2*a);
                        System.out.println("Roots are real and equal:\nRoot="+r1);
                }
                else if(d>0)
                {
                        r1=-b+Math.sqrt(d)/(2*a);
                        r2=-b-Math.sqrt(d)/(2*a);
                        System.out.println("Roots are real and unequal:\nRoot 1="+r1+"\nRoot 2="+r2);
                }
                else
                        System.out.println("Roots are imaginary.");
        }
}

Prime Numbers between 1 to 100 using Java

class Prime2{
        public static void main(String args[])
        {
                System.out.println("Prime numbers between 1 to 100 are:");
                int i=1,c=0,j;
                for(;i<=100;i++)
                {
                        for(j=2;j<=i/2;j++)
                                if(i%j==0)
                                        c++;
                        if(c==0)
                                System.out.print(i+" ");
                        c=0;
                }
        }
}

Checking Prime Number using Java

class Prime{
        public static void main(String args[])
        {
                int num=Integer.parseInt(args[0]),c=0;
                for(int i=2;i<=num/2;i++)
                        if(num%i==0)
                                c++;
                if(c==0)
                        System.out.println(num+" is a prime number.");
                else
                        System.out.println(num+" is not a prime number.");
        }
}
       

Armstrong Number

//Using Java
class Arm{
        public static void main(String args[])
        {
                int num=Integer.parseInt(args[0]);
                int temp=num,rem;
                double sum=0;
                while(temp!=0)
                {
                        rem=temp%10;
                        sum=sum+Math.pow(rem,3);
                        temp/=10;
                }
                if(sum==num)
                        System.out.println(num+" is an armstrong number.");
                else
                        System.out.println(num+" is not an armstrong number.");
        }
}

Lucas Series in Java

class Lucas{
public static void main(String args[])
{
   int n=Integer.parseInt(args[0]),num=1,i;//Input from command line
   for(i=0;i<n;i++)
   {
         num+=i;
         System.out.print(num+" ");
   }
}
}

Lucas Series

//Using C++
#include<iostream.h>
#include<conio.h>
#include<iomanip.h>
void main()
{
    int num=1,i,n;
    cout<<"Enter number of terms:";
    cin>>n;
    for(i=0;i<n;i++)
    {
        num=num+i;
        cout<<setw(2)<<num<<' ';
    }
    getch();
    clrscr();
}

Palindrome String WITHOUT using String Functions

//Using C++
#include<iostream.h>
#include<conio.h>
#include<stdlib.h>
void main()
{
    clrscr();
    char *wrd;
    int n=0;
    cout<<"Enter a string:";
    cin>>wrd;
    while(wrd[n]!='\0')
        n++;              //Counting length of the string
    n--;
    for(int i=0;i<n/2;i++,n--)
    {
        if(wrd[i]!=wrd[n])
        {
            cout<<"\nNot Palindrome!";
            getch();
            exit(0);
        }
    }
    cout<<"\nPalindrome.";
    getch();
}

Palindrome String using String Functions

//Using C++
#include<iostream.h>
#include<conio.h>
#include<string.h>
void main()
{
    char word[10],word2[10];
    int n;
    cout<<"Enter string:";
    cin>>word;
    strcpy(word2,word);
    strrev(word);
    if(stricmp(word,word2)==0)
        cout<<"\nPalindrome.";
    else
        cout<<"\nNot Palindrome!";
    getch();
    clrscr();
}

Deleting Duplicate Elements from an Array

/*Using C*/
#define size    10
#include<stdio.h>
#include<conio.h>
void main()
{
    int i,num[size],j;
    clrscr();
    printf("Enter %d numbers:",size);
    for(i=0;i<size;i++)
        scanf("%d",&num[i]);
    puts("The array is:");
    for(i=0;i<size;i++)
        printf("%d ",num[i]);
    for(i=0;i<size;i++)
        for(j=i+1;j<size;j++)
            if(num[i]==num[j])
                num[j]='\0';
    puts("\nUpdated array:");
    for(i=0;i<size;i++)
        printf("%d ",num[i]);
    getch();
}

Simple Arithemetic Mean

#include<iostream>
#include<conio.h>
#include<iomanip>
#include<windows.h>
using namespace std;
int i;
int main()
{
    void line(void);
    float sum=0;
    int n;
    cout<<"Enter number of observations:";
    cin>>n;
    float num[n];
    cout<<"Enter "<<n<<" data values:";
    for(i=0;i<n;i++)
    {
        cin>>num[i];
        sum+=num[i];
    }
    system("cls"
    );
    line();
    cout<<setw(5)<<"S.No."<<setw(15)<<"Observations";
    line();
    for(i=0;i<n;i++)
        cout<<setw(5)<<i+1<<setw(9)<<num[i]<<endl;
    line();
    cout<<setw(5)<<n<<setw(9)<<sum;
    line();
    cout<<"\nAverage="<<setprecision(2)<<sum/n;
    getch();
    return sum/n;
}
void line(void)
{
    cout<<endl;
    for(i=0;i<25;i++)
        cout<<'_';
    cout<<endl;
}

Falling String Character wise

#include<iostream.h>
#include<conio.h>
#include<stdio.h>
#include<string.h>
#include<dos.h>
#include<iomanip.h>
void main()
{
    int i,j,l,t=1;
    char* word;
    cout<<"Enter string: ";
    gets(word);
    l=strlen(word);
    for(i=0;i<l;i++,t++)
    {
        for(j=2;j<=24;j++)
        {
            clrscr();
            cout<<word+i;
            clrscr();
            cout<<setw(l)<<word+i+1;
            gotoxy(t,j);
            cout<<word[i];
            delay(100);
        }
    }
    getch();
    clrscr();
}