ukacgla_ATT
Class Checker

java.lang.Object
  |
  +--ukacgla_ATT.Checker

Direct Known Subclasses:

Ex01_Checker

public abstract class Checker

extends java.lang.Object

Field Summary

protected boolean	correct True if all student input correct, otherwise false
protected TTRandom	random Contains the random numbers corresponding to the type of logic gate
protected TableUI	table Allows access to the GUI and student input variables
protected java.util.Vector	wrongLines Holds the number of lines containing errors

Constructor Summary

Checker(TableUI t, TTRandom r)

Method Summary

protected boolean	allCorrect() Returns boolean true if no errors found.
protected abstract void	calcAnswer(int row) Implementations of calcAnswer(int row) must provide the correct answer for a single row.
protected abstract void	checkAnswer(int row) Implementation of checkAnswer(int row) must check if the student input for a single line is correct.
protected void	clearVector() clears contents of vector prior to next checking run.
protected abstract void	revealAnswer(int row) Implementations of revealAnswer(int row) will display the correct answer for a single row.
protected java.lang.String	wrongLines() Vector wrongLines contains the rows with errors.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

correct

protected boolean correct

True if all student input correct, otherwise false

random

protected TTRandom random

Contains the random numbers corresponding to the type of logic gate

table

protected TableUI table

Allows access to the GUI and student input variables

wrongLines

protected java.util.Vector wrongLines

Holds the number of lines containing errors

Constructor Detail

Checker

public Checker(TableUI t,
               TTRandom r)

Method Detail

allCorrect

protected boolean allCorrect()

Returns boolean true if no errors found.

calcAnswer

protected abstract void calcAnswer(int row)

Implementations of calcAnswer(int row) must provide the correct answer for a single row.

checkAnswer

protected abstract void checkAnswer(int row)

Implementation of checkAnswer(int row) must check if the student input for a single line is correct.

clearVector

protected void clearVector()

clears contents of vector prior to next checking run.

revealAnswer

protected abstract void revealAnswer(int row)

Implementations of revealAnswer(int row) will display the correct answer for a single row.

wrongLines

protected java.lang.String wrongLines()

Vector wrongLines contains the rows with errors. Method returns the vector as a string to allow table to construct the appropriate error message