Inheritance Program plan: Create a class “Car”, Define the method “m1()” to print “car 1”. Define the method “m2()” to print “car 2”. Define the method “toString()” to print “vroom”. Create a class “Truck” that extends the super class “Car”, Define the method “m1()” to print “truck 1”. Define the method “m2()”, Call the method “m1()” of super class “Car”. Define the method “toString()”, Call the method “toString()” of super class “Car” and return the concatenated value. Create a class “MonsterTruck” that extends the super class “Truck”, Define the method “m1()” to print “monster 1”, Define the method “m2()”, Call the method “m1()” of super class. Call the method “m2()” of super class. Define the method “toString()”, Call the method “toString()” and return the concatenated value. Define the method “main()”, Create object for “MonsterTruck” class. Call the methods “m1()”,“m2()”, and “toString()”.

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Chapter 9, Problem 4E

Program Plan Intro

Inheritance

Program plan:

Create a class “Car”,

Define the method “m1()” to print “car 1”.

Define the method “m2()” to print “car 2”.

Define the method “toString()” to print “vroom”.

Create a class “Truck” that extends the super class “Car”,

Define the method “m1()” to print “truck 1”.

Define the method “m2()”,

Call the method “m1()” of super class “Car”.

Define the method “toString()”,

Call the method “toString()” of super class “Car” and return the concatenated value.

Create a class “MonsterTruck” that extends the super class “Truck”,

Define the method “m1()” to print “monster 1”,

Define the method “m2()”,

Call the method “m1()” of super class.

Call the method “m2()” of super class.

Define the method “toString()”,

Call the method “toString()” and return the concatenated value.

Define the method “main()”,

Create object for “MonsterTruck” class.

Call the methods “m1()”,“m2()”, and “toString()”.

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