类加载（一）：static块 和 Class.forName

1.

 class Some {
     static{
         System.out.println("1");
     }

     public Some(){
         System.out.println("2");
     }
 }

 class Some2 extends Some{
     static{
         System.out.println("a");
     }

     public Some2(){
         System.out.println("b");
     }
 }

2.

    public static void main(String[] args) throws Exception {

//        new Some2();   //1a2b

//        new Some(); new Some2();  12a2b

//        Class.forName("com.gl.typeof.Some2");  //1a

//        Class.forName("com.gl.typeof.Some2"); new Some2(); // 1a2b
//        Class.forName("com.gl.typeof.Some2").newInstance(); //1a2b
    }