package com.study; import java.util.concurrent.ArrayBlockingQueue; import java.util.concurrent.BlockingQueue; public class BlockingQueueDemo { public static void main(String[] args) { BlockingQueueDemo blockingQueueDemo = new BlockingQueueDemo(); final BlockingQueueClass blockingQueueClass = blockingQueueDemo.new BlockingQueueClass(); Thread thread = new Thread(new Runnable() { @Override public void run() { while (true) { blockingQueueClass.put(); } } }); thread.start(); Thread thread2 = new Thread(new Runnable() { @Override public void run() { while (true) { blockingQueueClass.take(); } } }); thread2.start(); } class BlockingQueueClass{ BlockingQueue<Integer> takeblockingQueue = new ArrayBlockingQueue<Integer>(1); BlockingQueue<Integer> putblockingQueue = new ArrayBlockingQueue<Integer>(1); { try { takeblockingQueue.put(1); } catch (InterruptedException e) { e.printStackTrace(); } } public void put(){ try { putblockingQueue.put(1); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println("put..."); try { takeblockingQueue.take(); } catch (InterruptedException e) { e.printStackTrace(); } } public void take(){ try { takeblockingQueue.put(1); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println("take..."); try { putblockingQueue.take(); } catch (InterruptedException e) { e.printStackTrace(); } } } }