programming with java

Wednesday, 10 June 2015

Create an interface coversions. Which have the following functions Inchestomillimeters(), hptowatts(),wattstohp(),poundstogram(),gra

Code for Create an interface coversions. Which have the following functions Inchestomillimeters(), hptowatts(),wattstohp(),poundstogram(),gramtopounds() in Java

interface Convert_Measures
{
   double inchestomm(double inches);
   double hptowatts(double hp);
   double wattstohp(double watts);
   double poundstogm(double pounds);
   double gmtopounds(double gm);
}


class Cnvrt_Msrs implements Convert_Measures
{
   publicdouble inchestomm(double inches)
   {
       double mm;
       mm = 2.5 * 10 * inches;
       System.out.println("There are " + mm + " mm in " + inches + " inches");
       return mm;
   }

   publicdouble hptowatts(double hp)
   {
       double watts;
       watts = 746 * hp;
       System.out.println("There are " + watts + " watts in " + hp + " hp");
       return watts;
   }

   publicdouble wattstohp(double watts)
   {
       double hp;
       hp = (1/746) * watts;
       System.out.println("There are " + hp + " hp in " + watts + " watts");
       return hp;
   }

   publicdouble poundstogm(double pounds)
   {
       double gm;
       gm = 453.59 * pounds;
       System.out.println("There are " + gm + " gm in " + pounds + " pounds");
       return gm;
   }

   publicdouble gmtopounds(double gm)
   {
       double pounds;
       pounds = (1/453.59) * gm;
       System.out.println("There are " + pounds + " pounds in " + gm + " gm");
       return pounds;
   }
}

class Conversions
{
   publicstaticvoid main(String args[])
   {
       Cnvrt_Msrs CM = new Cnvrt_Msrs();
       double mm;
       double pounds;
       double watts;
       mm = CM.inchestomm(2);
       pounds = CM.gmtopounds(4.3);
       watts = CM.hptowatts(3);
   }
}


/*
            Output

There are 50.0 mm in 2.0 inches
There are 0.00947992680614652 pounds in 4.3 gm
There are 2238.0 watts in 3.0 hp

*/

Program sets up a String variable containing a paragraph of text of your choice. Extract the words from the text and sort them into alphabetical order

Code for Program sets up a String variable containing a paragraph of text of your choice. Extract the words from the text and sort them into alphabetical order in Java

import java.util.StringTokenizer;
classstring
{
    publicstaticvoid main(String args[])
    {
        operations op = new operations();
        op.getToken();
        op.sort();
        op.diffOp();
    }
}
class operations
{
    static String in="My first name is Vidyadhar and my last name is Yagnik";
    static String arr[]=new String[30];
    staticint c=0;
    
    void getToken()
    {
        StringTokenizer st=new StringTokenizer(in," ");
        
        while(st.hasMoreTokens())
        {
            arr[c]=st.nextToken();
            c++;
        }
        System.out.println("The original string is:::"+in);
        System.out.println("-------The Tokens of the strings--------");
        for(int i=0;i<c;i++)
        {
            System.out.println(arr[i]);
        }
    }
    void sort()
    {
        for(int i=0;i<c;i++)
        {
            for(int j=i+1;j<c;j++)
            {
                if(arr[j].compareToIgnoreCase(arr[i])  <  0)
                {
                    String t=arr[i];
                    arr[i]=arr[j];
                    arr[j]=t;
                }
            }
        }
        System.out.println("--------The sorted array of strings---------");
        for(int k=0;k<c;k++)
        {
            System.out.println(arr[k]);
        }
    }
    void diffOp()
    {
        int space=0,capital=0,vowel=0;

        //Count no. of white spaces,capital letters,vowels from the stringchar temp;
        for(int i=0;i<in.length();i++)
        {
            temp=in.charAt(i);
            if(temp==' ')
                space++;
            if(temp>=65 && temp<=90)
                capital++;
            if(temp=='a' || temp=='A' || temp=='e' || temp=='E' || temp=='i' || temp=='I' || temp=='o' || temp=='O' || temp=='u' || temp=='U')
                vowel++;
        }

        System.out.println("The no. of white space is::"+space);
        System.out.println("The no. of capital letter is::"+capital);
        System.out.println("The no. of vowel is::"+vowel);
        
        //replace space with '/'
        
        String newString=new String(in);
        newString=newString.replace(' ','/');
        System.out.println("The replaced string is:::"+newString);

        //reverse string 

        StringBuffer revers=new StringBuffer(in);
        revers.reverse();
        System.out.println("The reverse string is:::"+revers);    
    }    

}
/*
            Output

java string

The original string is:::My first name is Vidyadhar and my last name is Yagnik
-------The Tokens of the strings--------
My
first
name
is
Vidyadhar
and
my
last
name
is
Yagnik
--------The sorted array of strings---------
and
first
is
is
last
my
My
name
name
Vidyadhar
Yagnik
The no. of white space is::10
The no. of capital letter is::3
The no. of vowel is::13
The replaced string is:::My/first/name/is/Vidyadhar/and/my/last/name/is/Yagnik
The reverse string is:::kingaY si eman tsal ym dna rahdaydiV si eman tsrif yM

*/

Program, which creates a three thread. One thread display the numbers from 1 to 5, second thread display the square root of that number etc

Code for Program, which creates a three thread. One thread display the numbers from 1 to 5, second thread display the square root of that number etc in Java

class numbers implements Runnable
{
    Thread t;
    boolean running=true;
    public numbers(String name, int p)
    {
        t=new Thread(this,name);
        t.setPriority(p);
        t.start();
    }
    publicvoid run()
    {
        System.out.println("\n"+t+ " start");
        for(int i=1;i<=5;i++)
        {
            System.out.println(i);
        }
        System.out.println(t+ " exiting");
    }
}
class squareRoot implements Runnable
{
    Thread t;
    boolean running=true;
    public squareRoot(String name,int p)
    {
        t=new Thread(this,name);
        t.setPriority(p);
        t.start();
    }
    publicvoid run()
    {
        System.out.println("\n"+t+ " start");
        for(int i=1;i<=5;i++)
        {
            System.out.println(i*i);
        }
        System.out.println(t+ " exiting");
    }
}


class ThreadPri
{
    publicstaticvoid main(String args[])
    {
        new numbers("Numbers HIGH PRIORITY",Thread.MAX_PRIORITY);
        new squareRoot("Square MIDDLE PRIORITY",Thread.NORM_PRIORITY);
        Thread t=Thread.currentThread();
        t.setPriority(Thread.MIN_PRIORITY);
        t.setName("Cube LOW PRIORITY");
        
        System.out.println("\n"+t+ " start");
        for(int i=1;i<=5;i++)
        {
            System.out.println(i*i*i);
        }
        System.out.println(t+ " exiting");
    }
}
/*
            Output

Thread[Numbers HIGH PRIORITY,10,main] start
1
2
3
4
5
Thread[Numbers HIGH PRIORITY,10,main] exiting

Thread[Square MIDDLE PRIORITY,7,main] start
1
4
9
16
25
Thread[Square MIDDLE PRIORITY,7,main] exiting

Thread[Cube LOW PRIORITY,3,main] start
1
8
27
64
125
Thread[Cube LOW PRIORITY,3,main] exiting

*/

Write a class whose objects holds a current value and have a method to add that value, printing the new value

Code for Write a class whose objects holds a current value and have a method to add that value, printing the new value in Java

class Arr
{
   int int_array[]=newint[5];
   synchronized void add_to_array(int int_array[], int k)
   {
       for(int i=0; i<5; i++)
       {
           int_array[i]+=k;
           System.out.println(int_array[i]);
       }
   }
}

class Caller implements Runnable
{
    Arr A;
    int array[]={1, 2, 3, 4, 5};
    int val;
    Thread t;
    public Caller(Arr ar, int k)
    {
        A=ar;
        val=k;
        t=new Thread(this);
        t.start();
    }

    publicvoid run()
    {
        System.out.println("Thread starts..");
        A.add_to_array(array, val);
        System.out.println("Thread stops..");
    }
}

class ThreadArrAdd
{
    publicstaticvoid main(String args[])
    {
        Arr A1=new Arr();

        Caller ob1=new Caller(A1, 2);
        Caller ob2=new Caller(A1, 4);
        Caller ob3=new Caller(A1, 1);
        try
        {
            ob1.t.join();
            ob2.t.join();
            ob3.t.join();
        }
        catch(InterruptedException e)
        {
            System.out.println("Interrupted...");
        }
    }
}

/* 
            OUTPUT

Thread starts..
3
4
5
6
7
Thread stops..
Thread starts..
5
6
7
8
9
Thread stops..
Thread starts..
2
3
4
5
6
Thread stops..

*/

Write a class whose objects holds a current value and have a method to add that value, printing the new value

Code for Write a class whose objects holds a current value and have a method to add that value, printing the new value in Java

class Arr
{
   int int_array[]=newint[5];
   synchronized void add_to_array(int int_array[], int k)
   {
       for(int i=0; i<5; i++)
       {
           int_array[i]+=k;
           System.out.println(int_array[i]);
       }
   }
}

class Caller implements Runnable
{
    Arr A;
    int array[]={1, 2, 3, 4, 5};
    int val;
    Thread t;
    public Caller(Arr ar, int k)
    {
        A=ar;
        val=k;
        t=new Thread(this);
        t.start();
    }

    publicvoid run()
    {
        System.out.println("Thread starts..");
        A.add_to_array(array, val);
        System.out.println("Thread stops..");
    }
}

class ThreadArrAdd
{
    publicstaticvoid main(String args[])
    {
        Arr A1=new Arr();

        Caller ob1=new Caller(A1, 2);
        Caller ob2=new Caller(A1, 4);
        Caller ob3=new Caller(A1, 1);
        try
        {
            ob1.t.join();
            ob2.t.join();
            ob3.t.join();
        }
        catch(InterruptedException e)
        {
            System.out.println("Interrupted...");
        }
    }
}

/* 
            OUTPUT

Thread starts..
3
4
5
6
7
Thread stops..
Thread starts..
5
6
7
8
9
Thread stops..
Thread starts..
2
3
4
5
6
Thread stops..

*/

Program for Thread Priority

Code for Program for Thread Priority in Java

class thrun implements Runnable
{
      Thread t;
      boolean runn = true;

      thrun(String st,int p) 
      {
    t = new Thread(this,st);
    t.setPriority(p);
    t.start();
      }
    
      publicvoid run()
      {
    System.out.println("Thread name : " + t.getName());
    System.out.println("Thread Priority : " + t.getPriority());
      }     
    
}

class priority
{
      publicstaticvoid main(String args[])
      {
     Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
     thrun t1 = new thrun("Thread1",Thread.NORM_PRIORITY + 2);
     thrun t2 = new thrun("Thread2",Thread.NORM_PRIORITY - 2);
     System.out.println("Main Thread : " + Thread.currentThread());
     System.out.println("Main Thread Priority : " + Thread.currentThread().getPriority());
      }
}

/*
            Output

Thread name : Thread1
Main Thread : Thread[main,10,main]
Thread name : Thread2
Thread Priority : 7
Main Thread Priority : 10
Thread Priority : 3

*/

Write a program for restaurant

Code for Write a program for restaurant in Java

import java.io.*;

class customerOrder
{
    boolean valueset=false;
    String str[]=new String[3];

    synchronized void d_takeOrder(Thread t)
    {
        if(valueset)
        {
            try
            {
                wait();        
            }catch(InterruptedException e)
            {
                System.out.println(e);
            }
        }
        System.out.println("\n"+t);
        try
        {
            BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
            for(int i=0;i<3;i++)
            {
                System.out.print("\n Take an Order "+(i+1)+" :: ");
                str[i]=br.readLine();
            }
        }catch(IOException e)
        {
            System.out.println(e);
        }

        valueset=true;
        notify();
    }
    synchronized void d_dispOrder(Thread t)
    {
        if(!valueset)
        {
            try
            {
                wait();        
            }catch(InterruptedException e)
            {
                System.out.println(e);
            }
        }
        System.out.println("\n"+t);
        for(int i=0;i<3;i++)
        {
            System.out.print("\n Place an Order "+(i+1)+" :: "+str[i]);
        }
        valueset=false;
        notify();
    }
    
}
class takeOrder implements Runnable
{
    customerOrder d;
    Thread t;
    takeOrder(customerOrder d)
    {
        this.d=d;
        t=new Thread(this,"Manager take an order");
        t.start();
    }
    publicvoid run()
    {
        for(int i=0;i<2;i++)
        {
            d.d_takeOrder(t);
        }
    }
}
class dispOrder implements Runnable
{
    customerOrder d;
    Thread t;
    dispOrder(customerOrder d)
    {
        this.d=d;
        t=new Thread(this,"Manager place an order");
        t.start();
    }
    publicvoid run()
    {
        for(int i=0;i<2;i++)
        {
            d.d_dispOrder(t);
        }
    }
}
class Restaurant
{
    publicstaticvoid main(String args[])
    {
        customerOrder d=new customerOrder();
        new takeOrder(d);
        new dispOrder(d);
    }
}
/*
            Output

Thread[Manager take an order,5,main]

 Take an Order 1 :: 2 Roti

 Take an Order 2 :: 1 plat Veg.Jaipuri Sabji

 Take an Order 3 :: 1 plat Pulav

Thread[Manager place an order,5,main]

 Place an Order 1 :: 2 Roti
 Place an Order 2 :: 1 plat Veg.Jaipuri Sabji
 Place an Order 3 :: 1 plat Pulav

Thread[Manager take an order,5,main]

 Take an Order 1 :: 3 Roti

 Take an Order 2 :: 1 plat Paneerkadai Sabji

 Take an Order 3 :: 1 plat Biriyani

Thread[Manager place an order,5,main]

 Place an Order 1 :: 3 Roti
 Place an Order 2 :: 1 plat Paneerkadai Sabji
 Place an Order 3 :: 1 plat Biriyani

*/