1classA2{2static{System.out.println("static block is invoked");}3publicstaticvoidmain(String args[]){4System.out.println("Hello main");5}6} Output:staticblock is invoked Hello main Q)没有main方法的程序可以执行吗? Ans)可以,在JDK1.7之前执行如下代码是可以的: 1classA3{2static{3System.out....
原文链接:https://www.javatpoint.com/static-keyword-in-java