Final Exam Review

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Final Exam Review
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Know

• Class declaration
• Class declaration with inheritance
• is a
• Class declaration with implementation
• interface
• realization relationship
• Interface declaration (see iGeometry)

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Know

• Instantiation
• Instantiation with parameters
• Instantiation with a reference object
• has a
• Composition

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Be able to write

• Given a class declaration, write a Constructor
• Given private variables,
• write a mutator (set)
• write an accessor (get)

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Given a class file, identify

• Class declaration
• Instantiation
• Inheritance
• Composition
• Constructor
• Comments
• Reference variables
• Local Variables

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Given a few classes with methods

• Follow flow-of-control on method calls
• Especially for parent / child
• super / this

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Debug a program

• Missing semicolons
• Misspelled variables
• Method declaration matched with return
• Variable mismatches
• Wrong value
• Operations with mixed types
• Method calls matched with parameters

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Know how to

• Define a Color
• Get a Random number
• Parse an int to a String
• Prevent an operator entry error
• trycatch (Exception e)
• Define a polygon object

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Helper classes

• Exception e
• Graphics g
• ActionEvent e
• File read sequence File, FileReader,
  BufferedReader classes
• .ready( ) .readLine( ) .close( ) methods

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Misc

• Be able to write a loop to any spec
• Initialize an array

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Example programs you should understand

• private variable use BankAccount.java,
   BankAccountUser.java  - get/set methods
• StarClass, SimpleStarUser Lab 10
• the IGeometry interface IGeometry.java ,
  GeometryUser.java , Sphere.java , Pyramid.java ,
  Cube. java interface polymorphism
• sorting a music database myTunes.java,
   MusicRecord.java array manipulation

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Terms

• Override (extends)
• Overload (polymorphism)
• Composition (has a)
• Inheritance (is a)
• UML graphical representation of classes (with
  methods and variables) and relationships

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Operator entry

• JOptionPane
• .showInputDialog(
• .showConfirmDialog(
• .showMessageDialog(
• JColorChooser
• boxColor JColorChooser.showDialog( null,
  Greeting, defaultColor )
• JFileChooser
• File f // (not instantiation)
• JFileChooser fileGetter new JFileChooser()
• fileGetter.showOpenDialog( null )
• f fileGetter.getSelectedFile() // this
  performs the instantiation

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