Java变量声明怎么弄

Declare two variables of type MyPoint called: start and end. Assign both of these variables a new MyPoint object
声明两个type Mypoint的变量:Start和End，为这两个变量分配一个新MyPoint对象

参考如下：

class MyPoint {
    int x;
    int y;

    public MyPoint(int x, int y) {
        this.x = x;
        this.y = y;
    }

    @Override
    public String toString() {
        return "MyPoint{" +
                "x=" + x +
                ", y=" + y +
                '}';
    }
}

public class Main {

    public static void main(String[] args) {
        MyPoint start = new MyPoint(20, 30);
        MyPoint end = new MyPoint(40, 50);
        System.out.println(start);
        System.out.println(end);
    }
}