Design and Analysis of Algorithm Lab 3 | Read Now

Design and Analysis of Algorithm Lab 3

3A] Write a Java Program to read two integers a and b. Computer a/b and print when b is not zero. Raise an exception when b is equal to zero

3B] Write a Java Program that implements a multi-thread application that has three threads. The first thread generates a random integer for every 1 second; the second thread computes the square of the number and prints; the third thread will print the value of the cube of the number.

3A] Program Code

import java.util.Scanner;
public class lab3a 
{
		lab3a()
		{
			int a,b;
			float c;
			Scanner sc=new Scanner(System.in);
			try
			{
				System.out.println("Enter the value of a");
				a=sc.nextInt();
				System.out.println("Enter the value of b");
				b=sc.nextInt();
				sc.close();
				if(b==0)
					throw new ArithmeticException(" Divide by Zero Error");
				c=(float)a/b;
				System.out.println("value of a is: "+a);
				System.out.println("value of b is: "+b);
				System.out.println("a/b is: "+c);
			}
			catch(ArithmeticException e)
			{
				System.out.println("ERROR..!!");
				e.printStackTrace();
			}
		}
		public static void main(String srgs[])
		{
			new lab3a();
		}
}

Output

3B] Program Code

import java.util.*;
class second implements Runnable
{
	public int x;
	public second (int x)
	{
		this.x=x;
	}
	public void run()
	{
		System.out.println("Second thread:Square of the number is "+x*x);
	}
}

class third implements Runnable
{
	public int x;
	public third(int x)
	{
		this.x=x;
	}
	public void run()
	{
		System.out.println("third thread:Cube of the number is "+x*x*x+"\n");
	}
}

class first extends Thread
{
	public void run()
	{
		int num=0;
		Random r=new Random();
		try
		{
			for(int i=0;i<5;i++)
			{
				num=r.nextInt(100);
				System.out.println("first thread generated number is "+num);
				Thread t2=new Thread (new second(num));
				t2.start();
				Thread t3=new Thread(new third(num));
				t3.start();
				Thread.sleep(1000);
			}
		}
		catch(Exception e)
		{
			System.out.println(e.getMessage());
		}
	}
}

public class lab3b
{
	public static void main(String args[])
	{
		first a=new first();
		a.start();
	}
}

Output