static相关

1.代码块

public class StaticDemo {
    {
        System.out.println("匿名代码块");
    }

    static{
        System.out.println("静态代码块");
    }

    public StaticDemo(){
        System.out.println("构造函数");
    }

    public static void main(String[] args) {
        StaticDemo demo=new StaticDemo();
        System.out.println("==================");
        StaticDemo demo1=new StaticDemo();
    }
}

执行结果：

2.静态导入包

import static java.lang.Math.random;

public class Demo02 {
    public static void main(String[] args) {
        System.out.println(random());
    }
}