Strategy Pattern

Analogy: pattern

The Strategy Pattern is like a Video Game Inventory.

You can equip a Sword, a Bow, or a Shield.

When you press "Attack", the character does something different depending on what is equipped. You don't have to create a new character to change weapons.

The Battle Bot

Equip a strategy and see how the bot behaves.

Melee: Swings a sword.
Ranged: Shoots an arrow.
Defensive: Raises a shield.

Battle Bot (Strategy Pattern)

1. Equip Strategy

// Ready for battle...

The Code

Define a common interface (Weapon) and implement different strategies.

Java Example

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interface Weapon { void use(); }

class Sword implements Weapon {
    public void use() { System.out.println("Swing!"); }
}

class Robot {
    private Weapon weapon;
    public void setWeapon(Weapon w) { this.weapon = w; }
    public void attack() { weapon.use(); }
}