Method clone

references/Compete.java:25–35

()

class Thing4 implements Cloneable {
  private Thing3 t3 = new Thing3();
  @Override public Thing4 clone() {
    Thing4 t4 = null;
    try {
      t4 = (Thing4)super.clone();
    } catch(CloneNotSupportedException e) {
      throw new RuntimeException(e);
    }
    // Clone the field, too:
    t4.t3 = t3.clone();
    return t4;
  }
}

public class Compete {