Java programs | Student Projects

Java program for creating multiple threads

Editorial Team — Sun, 04 Oct 2009 15:10:08 +0000

class NewThread implements Runnable
{
	String name;
	Thread t;
	NewThread(String threadname)
	{
		name=threadname;
		t=new Thread(this,name);
		System.out.println("New Thread:"+t);
		t.start();
	}
	public void run()
	{
		try
		{
			for(int i=5;i>0;i--)
			{
				System.out.println(name+ ":"+i);
				Thread.sleep(1000);
			}
		}
		catch(InterruptedException e)
		{
			System.out.println(name+" Interrupted");
		}
		System.out.println(name+" exiting");
	}
}
class MultiThreadDemo
{
	
public static void main(String[] args)
	{
		new NewThread("One");
		new NewThread("Two");
		new NewThread("Three");
		try
		{
			Thread.sleep(10000);
		}
		catch(InterruptedException e)
		{
			System.out.println("Main Thread Interrupted");
		}
		System.out.println("Main Thread Exiting");
	}
}

Output:

New Thread :Thread[One,5,main]
New Thread : Thread[Two,5,main]
One:5
Two:5
New Thread : Thread[Three,5,main]
Three:5
One:4
Three:4
Two:4
One:3
Three:3
Two:3
One:2
Three:2
Two:2
One:1
Three:1
Two:1
One exiting
Three exiting
Two exiting
Main Thread Exiting

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Java program to print the prime numbers

Editorial Team — Fri, 02 Oct 2009 15:08:10 +0000

Write a Java program that prompts the user for an integer and then prints out all prime numbers up to that integer.

import java.util.Scanner;
class prime
{
	public static void main(String[] args)
	{
		int n,p;
		Scanner s=new Scanner(System.in);
		System.out.println(“Enter upto which number prime numbers are needed”);
		n=s.nextInt();
		for(int i=2;i
Output:
Enter upto which number prime numbers are needed:20

2

3

5

7

11

13

17

19
Enter up to which number prime numbers are needed:35
2

3

5

7

11

13

17

19

23

29

31
The post Java program to print the prime numbers first appeared on Student Projects.

Java program to print Fibonacci sequence

Editorial Team — Fri, 02 Oct 2009 14:50:28 +0000

Write a Java program that uses both recursive and non-recursive functions to print nth value in the Fibonacci sequence

Without recursion:

import java.util.Scanner;
class fibonacci
{
	public static void main(String[] input)
	{
		int x,y;
		x=Integer.parseInt(input[0]);
		y=Integer.parseInt(input[1]);
		Scanner s=new Scanner(System.in);
		System.out.println(“Enter the value of n:”);
int n=s.nextInt();
		int z[]=new int[n];
		z[0]=x;
		z[1]=y;
		for(int i=2;i
With recursion:
import java.util.Scanner;
class fibonacci
{
	public static void main(String[] args)
	{
		Scanner s=new Scanner(System.in);
		System.out.println(“Enter the value of n:”);
		int n=s.nextInt();
		fiboni f1=new fiboni();
		System.out.println(f1.fibon(n));
	}
}
class fiboni
{
	public int fibon(int a)
	{
		if(a==0 || a==1)
			return 1;
		else
			return fibon(a-1)+fibon(a-2);
	}
}

Output:
10
1

1

2

3

5

8

13

21

34

55
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