Blog

                . ‘  .           ‘ .( ‘.) ‘     _   (‘-.)’ (`’.) ‘     | (- -(. ‘) WRAPPER (-) ‘  .–`+’-. .  (‘ CLASSES ‘) .  |`—-‘|   (‘ .) – (‘. )  | /..\ |    . (‘ `.  )   |\./\.\|      ` .  `   |./G \/|  |.\ T/.|  `-._/.-‘

Given 3 classes (Archer, Adventurer, and RPG), Archer can inherit from both Adventurer and RPG with the following syntax: public class Archer extends Adventurer, RPG { /* valid class definition */}

Analyze the following code and indicate, for each line, whether autoboxing, unboxing, or neither occurs when the assignment operator is evaluated: boolean b = new Boolean(true); //  1   occursBoolean a = b; //  2   occurs   1   : [1]   2   : [2]

Given the following class hierarchy, identify whether the method drive is overloaded, overridden, or neither by the subclass: public class Car{   public void drive(String n, int p) { /* implemented */ } } public class Tesla extends Car{   public void drive(String name, int power) { /* implemented */ } } 

Given 3 classes (Archer, Adventurer, and RPG), Archer can inherit from both Adventurer and RPG with the following syntax: public class Archer extends Adventurer, RPG { /* valid class definition */}

Assume class Child inherits from class Parent. We can instantiate a concrete Child class as long as an abstract Parent class exists by writing the following statement:  Parent p = new Child(); 

Given the following class hierarchy, identify whether the method drive is overloaded, overridden, or neither by the subclass: public class Car{   public void drive(String n, int p) { /* implemented */ } } public class Tesla extends Car{   public void drive(String name, int power) { /* implemented */ } } 

Given the following class hierarchy, identify whether the method price is overloaded, overridden, or neither by the subclass: public class Drink {   public void price(int p, String n) { /* implemented */ } } public class Pepsi extends Drink {   public void price(int price, String name) { /* implemented */ } } 

Given 3 classes (Shark, SeaCreature, and Fish), Shark can inherit from both SeaCreature and Fish with the following syntax: public class Shark extends SeaCreature, Fish { /* valid class definition */}

Given the following class hierarchy, identify whether the method introduce is overloaded, overridden, or neither by the subclass: public class Person {    public void introduce(String name, int height) { /* implemented */ }}public class Student extends Person {   public void introduce(String name, int height, String major) { /* implemented */ }}