java - 多少次运行静态对象构造？

Question

对java和static变量有点疑惑。我有类似的问题，问题是:MyObject() 构造函数只运行一次或每次我创建 MyClass 的新实例时运行？

public class MyClass{    
static MyObject obj = new MyObject();
...

谢谢!

Answer 1

MyObject() constructor runs only once or every time I create a new instance of MyClass?

它仅在执行过程(类初始化)开始并在所有实例之间共享(单个副本)时运行一次。

A static initializer declared in a class is executed when the class is initialized (§12.4.2). Together with any field initializers for class variables (§8.3.2), static initializers may be used to initialize the class variables of the class.

http://docs.oracle.com/javase/specs/jls/se7/html/jls-8.html#jls-8.7