Part 3: Inheritance Questions [2pt ea / 20 pts]: (GridWorld Lab & Bugs you have been...

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Part 3: Inheritance Questions [2pt ea / 20 pts]: (GridWorld Lab & Bugs you have been missed: RIP 2008-2014) Actor <abstract> set Direction () Bug turn () Critter eat () BoxBug SpiralBug Chameleon makeBox ( ) make Spiral ( ) hide() Consider the class hierarchy given above. Assume each has a default constructor and each has a method as labeled. Indicate whether the following statements valid or invalid. 1) Actor al = new Actor(); 2) Actor a2 = new Bug(); 3) ((Bug) a2).turn(); 4) Bug b1 = new Bug(); 6) b1.makeBox (); Vino I A vino II (8 III (D as I (0 7) ((BoxBug) bl) .makeBox(); ( 293 od beau 8) BoxBug b2 = new SpiralBug(); 9) BoxBug b3 = new BoxBug (); b3.setDirection(); 5) bl. turn(); 10) Critter cl goba = new Chameleon (); Chameleon c2 = (Chameleon) cl; eb 08 (3 Part 3: Inheritance Questions [2pt ea / 20 pts]: (GridWorld Lab & Bugs you have been missed: RIP 2008-2014) Actor <abstract> set Direction () Bug turn () Critter eat () BoxBug SpiralBug Chameleon makeBox ( ) make Spiral ( ) hide() Consider the class hierarchy given above. Assume each has a default constructor and each has a method as labeled. Indicate whether the following statements valid or invalid. 1) Actor al = new Actor(); 2) Actor a2 = new Bug(); 3) ((Bug) a2).turn(); 4) Bug b1 = new Bug(); 6) b1.makeBox (); Vino I A vino II (8 III (D as I (0 7) ((BoxBug) bl) .makeBox(); ( 293 od beau 8) BoxBug b2 = new SpiralBug(); 9) BoxBug b3 = new BoxBug (); b3.setDirection(); 5) bl. turn(); 10) Critter cl goba = new Chameleon (); Chameleon c2 = (Chameleon) cl; eb 08 (3 Part 3: Inheritance Questions [2pt ea / 20 pts]: (GridWorld Lab & Bugs you have been missed: RIP 2008-2014) Actor <abstract> set Direction () Bug turn () Critter eat () BoxBug SpiralBug Chameleon makeBox ( ) make Spiral ( ) hide() Consider the class hierarchy given above. Assume each has a default constructor and each has a method as labeled. Indicate whether the following statements valid or invalid. 1) Actor al = new Actor(); 2) Actor a2 = new Bug(); 3) ((Bug) a2).turn(); 4) Bug b1 = new Bug(); 6) b1.makeBox (); Vino I A vino II (8 III (D as I (0 7) ((BoxBug) bl) .makeBox(); ( 293 od beau 8) BoxBug b2 = new SpiralBug(); 9) BoxBug b3 = new BoxBug (); b3.setDirection(); 5) bl. turn(); 10) Critter cl goba = new Chameleon (); Chameleon c2 = (Chameleon) cl; eb 08 (3

Answer rating: 100% (QA)

Solution Class Hierarchy Analysis The class hierarchy shows the following classes Actor Abstract Bug BoxBug SpiralBug Critter Chameleon Abstract Class ... View the full answer