GENERATING PRIME AND FIBONACCI NUMBERS USING MULTITHREADING - JAVA LAB PROGRAM

Ex.no: GENERATING PRIME AND FIBONACCI NUMBERS USING MULTITHREADING Date : Aim: To write a multithreaded java program to print both the prime and Fibonacci numbers Algorithm: Create a threaded Mythread1 in which find the prime numbers below 10 and write in a pipe. Create another thread MyThread2 in which find the Fibonacci numbers below 10 and write in another pipe. In the main class using a pipe compare the elements which are common to both prime and Fibonacci. Display the common elements Program import java.io.*; import java.util.*; class MyThread1 extends Thread {             private PipedReader pr;             private PipedWriter pw;             MyThread1(PipedReader pr, pipedWriter pw) {                         this.pr = pr;                         this.pw = pw;             }             public void run()             {                         try                         {                                     int I;                                     for (i=1;i<10;i++) {             int j;                                                 for (j=2; j<i; j++)                                                 {                                                             int n = i%j;                                                             if (n==0)                                                             {                                                                         break;                                                             }                                                 }                                                 if(I ==j)                                                 {                                                             pw.write(i+"\n");                                                 }                                     }                                     pw.close();                         }                         catch (IOException e)                         {                         }             } } class MyThread2 extends Thread { private PipedReader pr; Private PipedWriter pw; MyThread2(PipedReader pr, PipedWriter pw) { this.pr; this.pw=pw; } public void run() { try { int f1,f2=1,f3=1; for(int i=1;i<10;i++) { pw.write(f3+"\n"); f1=f2; f2=f3; f3=f1+f2; } catch (IOException e) { } } } class MultithreadedProgram { public static void main(string[] args)throws Exception { ArrayList list1=new ArrayList list(); ArrayList list list2=new ArrayList list(); PipedWriter pw1=new PipedWriter(); PipedReader pr1=new PipedReader(pw1); MyThread1 mt1=new MyThread1(pr1,pw1); System.out.println("Prime Numbers"); mt1.start(); int item1; while((item1=pr1.read())!=-1) {                         char ch1=((char)item1); System.out.print(Character.toString(ch1)); list1.add(Character.toString(ch1)); }                pr1.close(); PipedWriter pw2=new pipedWriter(); PipedReader pr2=new PipedReader(pw2); MyThread2 mt2=new MyThread2(pr2,pw2); System.out.println("Fibonacci Series"); mt2.satrt(); int item2; while ((item2=pr2.read())!=-1) { char ch2=((char)item2); System.out.print(Character.toString(ch2)); list2.add(Character.toString(ch2)); } pr2.close(); System.out.println("Elements common to both lists are:"); list1.retainAll(list2); for(int i=0;i<list1.size();i++) { System.out.print(list1.get(i)); } } } Output C:\java>javac MultithreadedProgram.java Note: MultiThreadedProgram.java uses unchecked or unsafe operations. Note: Recompile with –Xlint:unchecked for details. C:\java> java MultithreadedProgram Prime Numbers: 2 3 5 7 Fibonacci Numbers: 1 2 3 5 8 13 21 34 55 Elements common to both lists are: 2 3 5 C:\java> Conclusion: Thus the java program to print both the prime and Fibonacci numbers was developed and executed successfully.

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