an

exception is thrown, because ‘color’ method is protected.

an

exception is thrown, because ‘@color’ and ‘@type’ doesn’t declared.

an

exception is thrown, because ‘type’ method is private.

line

‘color: red, type: square’.

lines

‘The red square’ and then ‘The green square’.

an

exception is thrown.

line

‘The red square’.

line

‘The green square’.

a

‘self’ keyword.

a

name of parent class.

you

can't do it.

a

‘super’ keyword.

a child

class ‘overrides’ method of parent class.

a child

class ‘hide’ method of parent class.

a child

class ‘overloads’ method of parent class.

a child

class ‘rewrite’ method of parent class.

line

‘color: red’.

line

‘color: , side: 15’.

line

‘color: red, side: 15’.

an

exception is thrown.

line

‘draw’.

line

‘class’.

line

‘Shape’.

an

exception is thrown.

the

‘draw’ method is a private class method of the Object class.

the

‘draw’ method is a ‘floating’ functions that are not bound to any object.

the

‘draw’ method is a private instance method of the Object class.

the

‘draw’ method is a public instance method of the Object class.

an

exception will be thrown on line 7.

line

‘red’ will be print.

an

exception will be thrown on line 2.

the

blank line.

line

‘red’ will be print.

an

exception will be thrown on line 2.

the

blank line.

an

exception will be thrown on line 6.