materials138639360.files.wordpress.com · Web viewTO GENERATE ELECTRICITY BILL. import...

REG NO:211018104 NAME:

TO GENERATE ELECTRICITY BILL

import java.util.*;

class Ebill

{

int cno;

String cname,type;

double current,previous,unit,tbill;

Scanner in=new Scanner(System.in);


{

System.out.println("Enter cno");

cno=in.nextInt();

System.out.println("Enter cname");

cname=inp.nextLine();

System.out.println("Enter type");

type=inp.nextLine();

System.out.println("Enter current reading");

current=in.nextDouble();

System.out.println("Enter previous reading");

previous=in.nextDouble();

}

void calc()

{

unit=current-previous;


if(type.equals("D"))

{

if (unit<=100)

tbill=1*unit;

else if(unit<=200)

tbill=2.50*unit;

else if(unit<=500)

tbill=4*unit;

else

tbill=6*unit;

}

else

{

if(unit<=100)

tbill=2*unit;

else if(unit<=200)

tbill=4.50*unit;

else if(unit<=500)

tbill=6*unit;

else

tbill=7*unit;

}

}

void display()

{

System.

out.println("\ncustomer no is"+cno);


System.out.println("customer name is "+cname);

System.out.println("\nusage type is "+type);

System.out.println("\ncurrent reading"+current);

System.out.println("\nprevious month reading"+previous);

System.out.println("\nunits of current "+unit);

System.out.println("\ntotal current "+tbill);

}

}

class eb

{

public static void main(String args[])

{

Ebill e=new Ebill();

e.getinput();

e.calc();

e.display();

}

}


CURRENCY CONVERTER

import java.util.*;

class Converter

{


double d,i,e,y;


void dtoi()

{

System.out.println("enter in dollars");

d=in.nextDouble();

i=d*68.56;

System.out.println("the indian rupees is"+i);

}

void itod()

{

System.out.println("enter in rupees");

i=in.nextDouble();

d=i/68.56;

System.out.println("the dollar is"+d);

}

void etoi()

{

System.out.println("enter in euro");

e=in.nextDouble();

i=e*77.39;

System.out.println("the indian rupee is"+i);

}

void itoe()

{


i=in.nextDouble();


e=i/77.39;

System.out.println("the euro is"+e);

}

void ytoi()

{

System.out.println("enter in yens");

y=in.nextDouble();

i=y*0.64;

System.out.println("the rupees is"+i);

}

void itoy()

{


i=in.nextDouble();

y=i/0.64;

System.out.println("the yen is"+y);

}

}

class Currency

{


{

int ch;

String a;


Scanner i=new Scanner(System.in);

do


{

System.out.println("\n1.dollar to inr\n2.inr to dollar\n3.euro to dollar\n4.inrto euro\n5.yen to inr\n6.inr to yen");

System.out.println("enter your choice");

ch=in.nextInt();

Converter c=new Converter();

switch(ch)

{

case 1:

c.dtoi();

break;

case 2:

c.itod();

break;

case 3:

c.etoi();

break;

case 4:

c.itoe();

break;

case 5:

c.ytoi();

break;

case 6:

c.itoy();

break;

default:

System.out.println("enter correct choice");


}

System.out.println("do you want to continue");

a=i.nextLine();

}

while(a.equals("Y"));

}

}

OUTPUT:


TIME CONVERTER

import java.util.*;

class converter

{

double h,m,s;


void htom()

{

System.out.println("enter time in hours");

h=in.nextDouble();

m=h*60;

System.out.println("the time in minutes is"+m);


}

void mtoh()

{

System.out.println("the time in minutes");

m=in.nextDouble();

h=m/60;

System.out.println("the time in hours is"+h);

}

void htos()

{

System.out.println("enter the time in hours");

h=in.nextDouble();

s=h*3600;

System.out.println("the time in seconds is"+s);

}

void stoh()

{

System.out.println(" enter the time in seconds");

s=in.nextDouble();

h=s/3600;

System.out.println("the time in hours is"+h);

}

}

class Time

{


{


int ch;

String a;



do

{

System.out.println("\n1.hours to minutes\n2.minutes to hours\n3.hours to seconds\n4.seconds to hours");

System.out.println("enter your choise");

ch=in.nextInt();

converter c=new converter();

switch(ch)

{

case 1:

c.htom();

break;

case 2:

c.mtoh();

break;

case 3:

c.htos();

break;

case 4:

c.stoh();

break;

default:


}



a=i.nextLine();

}

while(a.equals("y"));

}

}

OUTPUT:


Distance convertor

import java.util.*;

class Converter1

{

double m,k,mi;


void mtok()

{

System.out.println("enter distance in meter");

m=in.nextDouble();

k=m/1000;


System.out.println("the distance in kilometer is"+k);

}

void ktom()

{

System.out.println("enter distance in kilometer");

k=in.nextDouble();

m=k*1000;

System.out.println("the distance in meter is"+m);

}

void mitok()

{

System.out.println("enter distance in miles");

mi=in.nextDouble();

k=mi*1.609;

System.out.println("the distance in kilometer is"+k);

}

void ktomi()

{

System.out.println("enter distance in kilometer");

k=in.nextDouble();

mi=k/1.609;

System.out.println("the distance in miles is"+mi);

}

}

class Distance

{



{

int ch;

String g;


Scanner i=new Scanner(System .in);

do

{

System.out.println("\n1.meter to kilometer\n2.kilometer to meter\n3.miles to kilometer\n4.kilometer to miles");

System.out.println("enter your choice");

ch=in.nextInt();

Converter1 c=new Converter1();

switch (ch)

{

case 1:

c.mtok();

break;

case 2:

c.ktom();

break;

case 3:

c.mitok();

break;

case 4:

c.ktomi();

break;

default:

System.out.println ("enter the correct choice");


}


g=i.nextLine();

}

while(g.equals("Y"));

}

OUTPUT:


TO GENERATE EMPLOYEE PAYSLIP

import java.util.*;

class Employee

{

int emp_id;

String emp_name;

Scanner in =new Scanner(System.in);

Scanner i =new Scanner(System.in);

void getinput()

{

System.out.println("enter employee number");

emp_id=in.nextInt();

System.out.println("enter employee name");

emp_name=i.nextLine();

}

}

class Professer extends Employee

{

void compute()

{

double pf,bp,hra,ns;

System.out.println("enter basic pay");

bp=in.nextDouble();

hra=(bp*15/100);

pf=(bp*10/100);


ns=bp+hra-pf;

System.out.println("HRA"+hra);

System.out.println("Your pf"+pf);

System.out.println("Net pay"+ns);

}

}

class Associate_professer extends Employee

{

void compute()

{



bp=in.nextDouble();

hra=(bp*10/100);

pf=(bp*10/100);

ns=bp+hra-pf;

System.out.println("HRA"+hra);



}

}

class Assistant_professer extends Employee

{

void compute()

{




bp=in.nextDouble();

hra=(bp*5/100);

pf=(bp*5/100);

TSystem.out.println("HRA"+hra);



}

}

class Payslip

{


{

Professer p=new Professer();

System.out.println("======PROFESSER=======");

p.getinput();

p.compute();

Assistant_professer a=new Assistant_professer();

System.out.println("======ASSISTANT PROFESSER=======");

p.getinput();

p.compute();

Associate_professer b=new Associate_professer();

System.out.println("======ASSOCIATE PROFESSER=======");

b.getinput();

b.compute();

}

}


OUTPUT:

Stack ADTimport java.util.*;


interface inter1

{

void push(int element);

void pop();

}

class Operation implements inter1

{

int size;

int[] s;

int top;


Operation(int max)

{

size=max;

s=new int[size];

top=-1;

}

public void push(int element)

{

if(top==size-1)

System.out.println("stack is full!!!insertion not possible");

else

top++;

s[top]=element;

}

public void pop()

{


int item;

if(top==-1)

System.out.println("stack is empty!!!!deletion not possible");

else

item=s[top];

top--;

}

void display()

{

System.out.println("the stack elements are");

if(top==-1)

System.out.println("stack is empty");

else

{

for(int i=top;i>=0;i--)

System.out.println(s[i]);

}

}

}

class Adtstack

{


{

int ch;

String g;




Operation o=new Operation(4);

do

{

System.out.println("**********stack operations***************");

System.out.println("1.push\n2.pop\n3.display\nenter your choice");

ch=in.nextInt();

switch(ch)

{

case 1:

o.push(10);

o.push(20);

o.push(30);

o.push(40);

break;

case 2:

o.pop();

break;

case 3:

o.display();

break;

default:


}


g=i.nextLine();

}while(g.equals("y"));

}


}

import java.util.*;

interface inter1

{

void push(int element);

void pop();

}

Class Operation implements inter1

{

int size;

int[] s;

int top;


Operation(int max)

{

size=max;

s=new int[size];

top=-1;

}

public void push(int element)

{

if(top==size-1)

System.out.println("stack is full!!!insertion not possible");

else

top++;

s[top]=element;

}


public void pop()

{

int item;

if(top==-1)

System.out.println("stack is empty!!!!deletion not possible");

else

item=s[top];

top--;

}

void display()

{

System.out.println("the stack elements are");

if(top==-1)

System.out.println("stack is empty");

else

{

for(int i=top;i>=0;i--)

System.out.println(s[i]);

}

}

}

class Adtstack

{


{

int ch;

String g;




Operation o=new Operation(4);

do

{

System.out.println("**********stack operations***************");

System.out.println("1.push\n2.pop\n3.display\nenter your choice");

ch=in.nextInt();

switch(ch)

{

case 1:

o.push(10);

o.push(20);

o.push(30);

o.push(40);

break;

case 2:

o.pop();

break;

case 3:

o.display();

break;

default:


}


g=i.nextLine();



}

}

OUTPUT:


Array list

Import java.util.*;

class StringOperation

{

String s;



ArrayList<String> al=new ArrayList<String>();

void append()

{

System.out.println("enter the string to append" );

s=in.nextLine();

al.add(s);

System.out.println("the array list elements are\n");

for(String i:al)

System.out.println(i);

}

void insert()

{

int pos;

System.out.println("enter the string to insert" );

s=in.nextLine();

System.out.println("enter the position to insert" );

pos=i.nextInt();


al.add(pos,s);

System.out.println("the array list elemnts are");

for(String i:al)


}

void search()

{

int i;

System.out.println("enter the string to search" );

s=in.nextLine();

System.out.println("the string found at" +(al.indexOf(s)+1));

}

void listStrings()

{

String a;

System.out.println("enter the starting letter of the string" );

a=in.nextLine();

for(String i:al)

if(i.startsWith(a))


}

void remove()

{

String b;

System.out.println("enter the element to remove");

b=in.nextLine();

al.remove(b);


System.out.println("the array list elements are");

for(String i:al)


}

}

class Array

{


{

int choice;

String g;

//ArrayList<String> al=new ArrayList<String>();

StringOperation st=new StringOperation();



do

{

System.out.println(" *****************MAIN MENU***********************" );

System.out.println("1.append\n2.insert\n3.search\n4.list strings\n5.remove\nenter your choice" );

choice=in.nextInt();

switch(choice)

{

case 1:

st.append();

break;

case 2:

st.insert();


break;

case 3:

st.search();

break;

case 4:

st.listStrings();

break;

case 5:

st.remove();

break;

default:

System.out.println(" enter the correct choice" );

}

System.out.println(" do you want to continue" );

g=i.nextLine();


}

}

OUTPUT:


Abstract classimport java.util.*;

abstract class Shapes

{

double a,b;

abstract void printArea();

}

class Rectangle extends Shapes

{

double area;


public void printArea()

{

System.out.println("enter the lenght and breadth of the rectangle");

a=in.nextDouble();

b=in.nextDouble();


area=a*b;

System.out.println("the area of the rectangle is" +area+" square units");

}

}

class Circle extends Shapes

{

double area;



{

System.out.println("enter the radius of the circle");

a=in.nextDouble();

area=3.14*a*a;

System.out.println("the area of the circle is" +area+" square units");

}

}

class Triangle extends Shapes

{

double area;



{

System.out.println("enter the height and breadth of the triangle");

a=in.nextDouble();

b=in.nextDouble();

area=0.5*a*b;

System.out.println("the area of the triangle is" +area+" square units");


}

}

class Ab

{


{

int choice;

String g;



do

{

System.out.println("the shapes are");

System.out.println("1.rectangle\n2.circle\n3.triangle\nenter your choice");

choice=in.nextInt();

switch(choice)

{

case 1:

Shapes r=new Rectangle();

r.printArea();

break;

case 2:

Shapes c=new Circle();

c.printArea();

break;

case 3:

Shapes t=new Triangle();


t.printArea();

break;

default:

System.out.println("enter corect choice");

}


g=i.nextLine();


}

}

OUTPUT:


Exception handlingimport java.util.*;

class ValueTooSmallException extends Exception

{

ValueTooSmallException(String msg)

{

super(msg);

}

}

class NotValidException extends Exception

{

NotValidException(String s)

{

super(s);

}

}

class User1

{


{

int n;

String g;



System.out.println("enter your username");

g=in.nextLine();

System.out.println("enter the pin number");


n=in.nextInt();

try

{

if(g.length()<6)

throw new NotValidException("your username must have 6 characters");

else

System.out.println("user name:"+g);

}

catch(NotValidException d)

{

System.out.println(d);

}

try

{

if(n<100)

throw new ValueTooSmallException("enter the pin number in three digits");

else

System.out.println("pin number:"+n);

}

catch(ValueTooSmallException e)

{

System.out.println(e);

}

}

}


OUTPUT:

File operationsimport java.util.Scanner;

import java.io.File;

class FileDemo

{


{

System.out.println("enter the name of the file");

Scanner input=new Scanner(System.in);


String s=input.nextLine();

File f1=new File(s);

System.out.println("______________");

System.out.println("file name:"+f1.getName());

System.out.println("path:"+f1.getPath());

System.out.println("Abs path:"+f1.getAbsolutePath());

System.out.println("this file:"+(f1.exists()?"Exists":"Does not exists"));

System.out.println("Is file:"+f1.isFile());

System.out.println("Is directory:"+f1.isDirectory());

System.out.println("Is readable:"+f1.canRead());

System.out.println("Is writeable:"+f1.canWrite());

System.out.println("Is absolute:"+f1.isAbsolute());

System.out.println("File size:"+f1.length()+"bytes");

System.out.println("Is Hidden:"+f1.isHidden());

}

}


MULTI THREADING

import java.util.*;

class NumberGenerate

{

private int value;

private boolean flag;

public synchronized void put()

{

while(flag)

{

try{

wait();

}

catch(InterruptedException e){ }


}

flag=true;

Random random=new Random();

this.value=random.nextInt(10);

System.out.println("the generated number is:"+value);

notifyAll();

}

public synchronized void get1()

{

while(!flag)

{

try{

wait();

}


}

if(value%2==0)

{

System.out.println("second is executing now....");

int ans=value*value;

System.out.println(value+"is even number and its square is:"+ans);

}

flag=false;

notifyAll();

}

public synchronized void get2()

{

while(!flag)

{


try

{

wait();

}


}

if(value%2!=0)

{

System.out.println("third thread is executing now.....");

int ans=value*value*value;

System.out.println(value+"is odd number and its cube is:"+ans);

}

flag=false;

notifyAll();

}

}

public class TestNumber

{


{

final NumberGenerate obj=new NumberGenerate();

Thread producerThread=new Thread()

{

public void run()

{

for(int i=1;i<=6;i++)

{

System.out.println("main thread started....");

obj.put();


try

{

Thread.sleep(1000);

}


}

}

};

Thread consumerThread1=new Thread()

{

public void run()

{


{

obj.get1();

try

{

Thread.sleep(2000);

}


}

}

};

Thread consumerThread2=new Thread()

{

public void run()

{


{


obj.get2();

try

{

Thread.sleep(3000);

}


}

}

};

producerThread.start();

consumerThread1.start();

consumerThread2.start();

}

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