java中当static块和构造函数同时出现，顺序是？

静态块先于构造函数执行 
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class Student {
    int age;
    String name;
    static int count;

    public Student() {
        System.out.println("in constructor");
    }
/*只执行一次。*/
    static {
        System.out.println("hello");
        count = 0;
    }
}

public class Test {
    public static void main(String[] args) {
        Student s = new Student();
        Student s1 = new Student();
    }
}

result is :

hello
in constructor
in constructor

assignment: class: School has a static member called count which records how many schools we have. count's initial value is 0, count increments in School's constructor.

assignment2: car( mercedes, BMW, static member count is increased in the constructor.)

　

assignement: 1) class Car(name,price, static TotalSum), static block initialize TotalSum=0; whenever you buy a car, constructor add money to the TotalSum. finally, print out the TotalSum.

2) make a MyMath class which has absolute and power,add(int, int), add(int, int, int)