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5. Defining and Using Java Methods: Tasks | page 14 of 31 |
For this exercise, you will define and use some Java methods. The
methods are technically instance methods, but you can think of them as
plain old functions or procedures from your previous programming
experience. For more help with exercises, see About The Exercises Prerequisites
Tasks
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Task 1
Define a method called sayHello() in class
Methodcall, provided in the skeleton code, that has no
arguments and no return value. Make the body of the method simply
print "Hello."
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Task 2
Make the start() method of Methodcall call sayHello().
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Task 3
Define a method called addTwo() that takes an integer argument, adds 2 to it, and returns that result.
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Task 4
In the start() method of Methodcall, define a local
integer variable and initialize it to the result of calling
addTwo(3). Print out the variable; that is, print out the result of the method call. Define another local integer variable initialize
it to the result of calling addTwo(19). Print out its result.
Help for each of these tasks can be found on the next page.
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