How to check the memory condition during the running of java program

Question

I'm learning java, When looking for data, I often see pictures that describe the memory distribution during the running of the program.Just like：

Description polymorphism

Description inheritance

Combined with the article, I can understand the picture. But I want to know, is there any method or command that allows me to see the memory distribution state in jvm when the java program is running?

I tried to debug my program using jdb, but it didn't give me the memory allocation status in jvm.

The following is my test code, I just need a simple example, use some commands or methods to see the memory allocation of jvm when this code runs.

Project directory structure

.
├── src
│   └── com
│       ├── Index.java
│       └── libs
│           ├── Cat.java
│           ├── Dog.java
│           └── ext
│               └── Animal.java

Animal.java

package com.libs.ext;

public class Animal {

    public void eat() {
        System.out.println("Animal is eating");
    }
}

Dog.java

package com.libs;

import com.libs.ext.Animal;

public class Dog extends Animal {
    public void eat() {
        System.out.println("Dog is eating");
    }
}

Cat.java

package com.libs;

import com.libs.ext.Animal;

public class Cat extends Animal {
    public void jump() {
        System.out.println("Cat is jumping");
    }
    public void eat() {
        System.out.println("Cat is eating");
    }
}

Index.java

package com;

import com.libs.Cat;
import com.libs.Dog;
import com.libs.ext.Animal;

public class Index {

    public static void doEat(Animal animal) {
        animal.eat();
    }

    public static void main(String[] args) {
        Dog d = new Dog();
        Cat c = new Cat();

        Index.doEat(d); //Dog is eating
        Index.doEat(c); //Cat is eating

        c.jump(); //Cat is jumping
    }
}