User

import java.util.ArrayList; import

java.util.List;

class Producer implements Runnable $\{$

private final List buffer;

public Producer$($List buffer$)\{$

this.buffer $=$ buffer;

$\}$

@Override

public void run$()\{$

String names$[]=\{"$ first$-$dose", "seconed$-$dose", "booster$-$dose"$\}$;

for $($String name : names$)\{$

synchronized $($buffer$)\{$

buffer.add$($name$)$;

try $\{$

Thread.sleep$(500)$;

$\}$ catch $($InterruptedException e$)\{$

$\}$

$\}$

System.out.println$($Thread$.$currentThread$().$getName$()+"$ add to list $"+$ name$)$;

$\}$

System.out.println$($Thread$.$currentThread$().$getName$()+"$ exit $"+$ Main.finish$)$;

synchronized $($buffer$)\{$ buffer.add$($Main$.$finish$)$;

$\}$

$\}$

$\}$

class Consumer implements Runnable $\{$

private final List buffer; public

Consumer$($List buffer$)\{$

this.buffer $=$ buffer;

$\}$

@Override

public void run$()\{$ while

$($true$)\{$ synchronized

$($buffer$)\{$

if $($buffer$.$isEmpty$())\{$

continue;

$\}$

if $($buffer$.$get$(0).$equals$($Main$.$finish$))\{$

System.out.println$($Thread$.$currentThread$().$getName$()+"$ exiting."$)$;

break;

$\}$ else $\{$

System.out.println$($Thread$.$currentThread$().$getName$()+"$ remove from list $"+$

buffer.remove$(0))$;

System.out.println$("------------------------------------------------")$;

try $\{//$ create thread for consumer

Thread.sleep$(1000)$;$//$set the delay for one seconed

$\}$ catch $($InterruptedException e$)\{$

$\}$

$\}$

$\}$

$\}$

$\}$

$\}$

public class Main $\{$

public static final String finish$=$ "finish"; $//$ end the process

public static void main$($String$[]$ args$)\{$

List buffer $=$ new ArrayList$<>()$; $//$ buffer we used Thread

Thread producerThread$1=$ new Thread$($new Producer$($buffer$))$;

producerThread$1.$setName$("$producer Thread $1")$;

Thread producerThread$2=$ new Thread$($new Producer$($buffer$))$;

producerThread$2.$setName$("$producer Thread $2")$;

Thread consumerThread$1=$ new Thread$($new Consumer$($buffer$))$;

consumerThread$1.$setName$("$consumer Thread $1")$;

Thread consumerThread$2=$ new Thread$($new Consumer$($buffer$))$;

consumerThread$2.$setName$("$consumer Thread $2")$;

producerThread$1.$start$()$;

producerThread$2.$start$()$;

consumerThread$1.$start$()$;

consumerThread$2.$start$()$; $\}$

this is the output

producer Thread $1$ add to list first$-$dose

consumer Thread $2$ remove from list first$-$dose

$------------------------------------------------$

producer Thread $2$ add to list first$-$dose

consumer Thread $1$ remove from list first$-$dose

$------------------------------------------------$

producer Thread $1$ add to list seconed$-$dose

consumer Thread $1$ remove from list seconed$-$dose

$------------------------------------------------$

producer Thread $2$ add to list seconed$-$dose

consumer Thread $1$ remove from list seconed$-$dose

$------------------------------------------------$

producer Thread $1$ add to list booster$-$dose

consumer Thread $2$ remove from list booster$-$dose

$------------------------------------------------$

producer Thread $1$ exit finish

producer Thread $2$ add to list booster$-$dose

producer Thread $2$ exit finish

consumer Thread $1$ remove from list booster$-$dose

$------------------------------------------------$

consumer Thread $1$ exiting.

consumer Thread $2$ exiting. ineed same this output rewrite this code i need same output