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public V get(K key) {
   int location = findKey(key);
   if (location < 0) { throw new IllegalArgumentException("Key " + 
                            key + " does not exist in map.");  }
   return values[findKey(key)];
}

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public static void main(String[] args) {
    System.out.println("ayyy lmao");
    throw new RuntimeException("For no reason.");
}

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Dog d = new Dog("Lucy", "Retriever", 80);
d.becomeAngry();
 
try {
    d.receivePat();
} catch (Exception e) {
    System.out.println(
     	"Tried to pat: " + e);
}
 
System.out.println(d);

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public static void gulgate() throws IOException {
   ... throw new IOException("hi"); ...
}

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public interface Iterable<T> {
    Iterator<T> iterator();
}

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package java.util;
public interface Iterator<T> {
    boolean hasNext();
    T next();
}