学习JVM原理-15.类initialization与继承关系
摘自《深入理解Java虚拟机》周志明著

class Bean {static {System.out.println("Bean inited");}}class SubBean extends Bean{static {System.out.println("SubBean inited");}}main(){    int  i = SubBean.subBeanValue; /*会先打印"Bean inited",再打印"SubBean inited" *//*JVM会保证在子类的<clinit>方法执行之前,父类的<clint>()方法已经执行完毕*/}