How to use packages in Java. Packages are an important tool for organising your code; you’ll also need to understand packages to use other people’s code.

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Code for this tutorial:

App.java:

import ocean.Fish;
import ocean.plants.Seaweed;

public class App {

	
	public static void main(String[] args) {
		Fish fish = new Fish();
		Seaweed weed = new Seaweed();
	}

}

Fish.java:

package ocean;

public class Fish {

}

Algae.java:

package ocean.plants;

public class Algae {

}

Seaweed.java:

package ocean.plants;

public class Seaweed {

}

Aquarium.java:

package com.caveofprogramming.oceangame;

public class Aquarium {

}

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