Write a Java program that correctly implements producer consumer problem using the concept of inter thread communication.

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class Q
{
int n;
boolean valueSet=false;
synchronized int get()
{
if(!valueSet)
try
{
wait();
}
catch(InterruptedException e)
{
System.out.println("Interrupted Exception caught");
}
System.out.println("Got:"+n);
valueSet=false;
notify();
return n;
}
synchronized void put(int n)
{
if(valueSet)
try
{
wait();
}
catch(InterruptedException e)
{
System.out.println("Interrupted Exception caught");
}
this.n=n;
valueSet=true;
System.out.println("Put:"+n);
notify();
}
}
class Producer implements Runnable
{
Q q;
Producer(Q q)
{
this.q=q;
new Thread(this,"Producer").start();
}
public void run()
{
int i=0;
while(true)
{
q.put(i++);
}
}
}
class Consumer implements Runnable
{
Q q;
Consumer(Q q)
{
this.q=q;
new Thread(this,"Consumer").start();
}
public void run()
{
while(true)
{
q.get();
}
}
}
class ProdCons
{
public static void main(String[] args)
{
Q q=new [...]

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import java.awt.*;
import java.awt.event.*;
import java.applet.*;
/*
<applet code="Mouse" width=500 height=500>
</applet>
*/
public class Mouse extends Applet
implements MouseListener,MouseMotionListener
{
int X=0,Y=20;
String msg="MouseEvents";
public void init()
{
addMouseListener(this);
addMouseMotionListener(this);
setBackground(Color.black);
setForeground(Color.red);
}
public void mouseEntered(MouseEvent m)
{
setBackground(Color.magenta);
showStatus("Mouse Entered");
repaint();
}
public void mouseExited(MouseEvent m)
{
setBackground(Color.black);
showStatus("Mouse Exited");
repaint();
}
public void mousePressed(MouseEvent m)
{
X=10;
Y=20;
msg="NEC";
setBackground(Color.green);
repaint();
}
public void mouseReleased(MouseEvent m)
{
X=10;
Y=20;
msg="Engineering";
setBackground(Color.blue);
repaint();
}
public void mouseMoved(MouseEvent m)
{
X=m.getX();
Y=m.getY();
msg="College";
setBackground(Color.white);
showStatus("Mouse Moved");
repaint();
}
public void mouseDragged(MouseEvent m)
{
msg="CSE";
setBackground(Color.yellow);
showStatus("Mouse Moved"+m.getX()+" "+m.getY());
repaint();
}
public void mouseClicked(MouseEvent m)
{
msg="Students";
setBackground(Color.pink);
showStatus("Mouse Clicked");
repaint();
}
public void paint(Graphics g)
{
g.drawString(msg,X,Y);
}
}

Output:

Java mouse handling events

skema mouse, simple applet program for Mouse [...]

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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