Java by API/java.lang/Cloneable

implements Cloneable

/*
 * Output: 
x1: 10 20.98
x2: 10 20.98
 
 */

class MyClass implements Cloneable {
  int a;
  double b;
  MyClass cloneTest() {
    try {
      return (MyClass) super.clone();
    } catch(CloneNotSupportedException e) {
      System.out.println("Cloning not allowed.");
      return this;
    }
  }
}
public class MainClass {
  public static void main(String args[]) {
    MyClass x1 = new MyClass();
    MyClass x2;
    x1.a = 10;
    x1.b = 20.98;
    x2 = x1.cloneTest(); // clone x1
    System.out.println("x1: " + x1.a + " " + x1.b);
    System.out.println("x2: " + x2.a + " " + x2.b);
  }
}