package com.min.test; class AA{ // 加载时运行，与instance无关 static{ System.out.println("static block "); } AA() { System.out.println("AA()"); } } public class JavaTest { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub try { Class.forName("com.min.test.AA"); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } // AA a = new AA(); } }
输出结果：
static block
加上AA a = new AA();后，输出：
static block AA()
