34 lines
877 B
Java
34 lines
877 B
Java
package com.iluwatar.doublechecked.locking;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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/**
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*
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* In {@link Inventory} we store the items with a given size. However, we do not store
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* more items than the inventory size. To address concurrent access problems we
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* use double checked locking to add item to inventory. In this method, the
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* thread which gets the lock first adds the item.
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*
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*/
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public class App {
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/**
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* Program entry point
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* @param args command line args
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*/
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public static void main(String[] args) {
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final Inventory inventory = new Inventory(1000);
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ExecutorService executorService = Executors.newFixedThreadPool(3);
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for (int i = 0; i < 3; i++) {
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executorService.execute(new Runnable() {
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@Override
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public void run() {
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while (inventory.addItem(new Item()))
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;
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}
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});
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}
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}
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}
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