静态方法

public int age;
class2() {
    int age;
    age = 3;
   this.age = 6;
    age = 2;
}

    public static void main(String[] args) {
        class2 c=new class2();
        System.out.println(c.age);
    }
    输出为6
    如果注释int age 输出2
    如果注释this。age 输出 0