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You can find an overview of a lot of design patterns in Wikipedia. It also mentions which patterns are mentioned by GoF. I'll sum them up here and try to assign as much as possible pattern implementations found in both the Java SE and Java EE API's.
Creational patterns
Abstract factory (recogniz ...
The difference is clearly explained in the JSR-220 Enterprise JavaBeans 3.0 specification:
5.6 Container-managed Persistence Contexts
(...)
A container-managed persistence context may be defined to have either a lifetime that is scoped to a single transaction or an extended lifetime that spans ...
import java.util.Observable;
import java.util.Observer;
class MessageBoard extends Observable {
private String message;
public String getMessage() {
return message;
}
public void changeMessage(String message) {
this.message = message;
setChanged();
notifyObser ...
Excerpt from http://stackoverflow.com/questions/9700871/what-is-difference-between-sleep-method-and-yield-method-of-multi-threading
We can prevent a thread from execution by using any of the 3 methods of Thread class:
yield()
join()
摘抄自别人的人生感悟
- 博客分类：
- 人生感悟
我们身处不平静的环境，需要保持平静的内心
人无论在哪个时代似乎在心理上的需求是一样的，想得到些什么，或者不想失去自己所拥有的。爱情、事业等等最后转变成内心的幸福感，才觉得这辈子没有白活。而 ...