public class Person {
//第三个执行
public Person() {
System.out.println("构造方法");
}
//第二个执行：赋初始值
{
System.out.println("匿名代码块");
}
//第一个执行，只执行一次
static {
System.out.println("静态代码块");
}
public static void main(String[] args) {
Person person1 = new Person();
System.out.println("=========================");
Person person2 = new Person();
}
}
//static
public class Student {
private static int age;//静态变量
private double score;//非静态变量
public void run(){
}
public static void go(){
}
public static void main(String[] args) {
new Student().run();
go();
}
}
//静态导入包
import static java.lang.Math.random;
import static java.lang.Math.PI;
public class Test {
public static void main(String[] args) {
System.out.println(random());
System.out.println(PI);
}
}