Question

如何通过socket消息队列机制实现同步非阻塞与异步阻塞？优缺点

Answer 1

public class Calcul {
public static void main(String[] args) {
circularArea();
}
public static void circularArea(){
int r=2;
float π=3.14f;
float circularArea = π*r*r;
System.out.println(circularArea);
}