package classloader;public class ClassLoaderDisplayDemo {    public static void main(String[] args) {        Person person = new Person();        person.process();    }}class Person {    static {        no = 5;//只能对后面的静态变量no赋值，不能进行其它操作    }    private static int no;//如果对no进行赋值操作，则上面static块中对no的赋值操作的结果会被此次的操作覆盖    private String name = getClass().getName();    {        System.out.println("Block:" + name);        System.out.println("Block:no-->" + no);        no = no + 1;        System.out.println("Block:no-->" + no);    }    static {        no = no + 1;        System.out.println("no:" + no);    }    public Person(String name) {        this.name = name;    }    public Person() {        System.out.println("Name:" + name);    }    public void process() {        System.out.println("process-->Name:" + name);    }}

Output:

no:6Block:classloader.PersonBlock:no-->6Block:no-->7Name:classloader.Personprocess-->Name:classloader.Person