interface And implements

interface Hero {

boolean NEVER_DIES = true;

void swim();

void fight();

void jump();

};

class Jedi implements Hero {

public void fight()

{

// swing light saber

}

public void swim() { ... }

public void jump() { ... }

}

class WesternHero implements Hero {

public void fight()

{

// punch

}

public void swim() { ... }

public void jump() { ... }

}

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