The result instance of this code implements theListinterface, but it isn’t ajava.util.ArrayListor aLinkedList.Instead, it’s aListbacked by the original array, which has two implications that we’ll look at in the rest of this section. Although the class’s name happens to beArrayList, ...
The output of the above example is: Elements of ArrayList : [10, 20, 30] Elements of LinkedList : [11, 22] Elements of Stack : [101, 102] Benefits of using double brace initialization The following are the benefits of using the double brace initialization in Java: ...
List<String> beanNames = new ArrayList<>(this.beanDefinitionNames); // Trigger initialization of all non-lazy singleton beans... /// 下面这个循环,触发所有的非懒加载的 singleton beans 的初始化操作 for (String beanName : beanNames) { RootBeanDefinition bd = getMergedLocalBeanDefinition(beanName...
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// todo 盛放所有的beanName,所有的需要实例化的beanName都在这里,包括Spring断断续续添加的, Aspectj的, 程序员通过注解标识的List<String> beanNames = new ArrayList<>(this.beanDefinitionNames);// Trigger initialization of all non-lazy singleton beans...// todo 触发所有非延迟加载单例beans的初始化,...
It’s probably easier to understand when you see the double brace initialization in action. Double brace initialization example The example above implemented with double brace Java syntax would look as follows: ArrayList<String>list= new ArrayList<String>(){{;add("alpha"); ...
();// Prepare the bean factory for use in this context.//3、设置 BeanFactory 的类加载器,添加几个 BeanPostProcessor,手动注册几个特殊的 beanprepareBeanFactory(beanFactory);try{//4、模板方法// Allows post-processing of the bean factory in context subclasses.postProcessBeanFactory(beanFactory);// ...
List<String> beanNames = new ArrayList<>(this.beanDefinitionNames); // Trigger initialization of all non-lazy singleton beans... /// 下面这个循环,触发所有的非懒加载的 singleton beans 的初始化操作 for (String beanName : beanNames) { Root...
}}// Create proxy here if we have a custom TargetSource. todo 如果我们有一个自定义的TargetSource,在这里创建代理// Suppresses unnecessary default instantiation of the target bean: // todo 抑制不必要的目标bean的默认实例化:// The TargetSource will handle target instances in a custom fashion. ...
// Iterate over a copy to allow for init methods which in turn register new bean definitions. // While this may not be part of the regular factory bootstrap, it does otherwise work fine. // 将 beanDefinitionNames 放到集合中 List<String> beanNames = new ArrayList<>(this.beanDefinitionName...