Method Overriding in JRuby
In this part of JRuby tutorial you will know to
implement overriding of methods between the classes. In earlier examples of
JRuby you have studied a lot about to create class, inheriting class and calling
methods of classes. Now in this example we will introduce you with the case of
overriding of methods in JRuby program.
In this example we have created a class "Base"
and it consists of one method "addBase" and after that we have
created another class Derive which consists of one new method addDerive
and one overridden method addBase which have some other functionality
rather than Base class by inheriting the Base class.
After creating instances of Base and Derive class when we
will call the overridden then it will show you the case of overriding that Base
class method is overridden.Here is the example code of OverrideJRuby.rb as
follows:
OverrideJRuby.rb
# Example program of Inheritance in JRuby
class Base
def addBase
puts "Hello Base"
end
end
class Derive < Base
def addBase
puts "Hello Derived Base"
end
def addDerive
puts "Hello Derived"
end
end
# Creating instance of Base class
base = Base.new
puts base.addBase
# Creating instance of Derive class
derive = Derive.new
puts derive.addBase
puts derive.addDerive |
Output:
C:\JRuby>jruby OverrideJRuby.rb
Hello Base
nil
Hello Derived Base
nil
Hello Derived
nil |
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