class加载时初始化变量

我现在想一个class,在项目启动的时候,自动初始化它的成员变量,实现代码如下:

public static String SCREEN = "SCREEN";
public static String types;
static{
	List<String> list = new ArrayList<String>();
	list.add("'"+SCREEN+"'");
	types = list.toString();
}

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转载自minyongcheng.iteye.com/blog/2322922