Class TrivialExample3

java.lang.Object

TrivialExample3

public class TrivialExample3
extends java.lang.Object

Class: TrivialExample3.
Description: This trivial examples illustrates how to use the buildFromInfix and evaluate methods in the ExprEvaluator class. This example uses the getValueOf(var, value), setValueOf(var), and evaluate() methods.

The techniques in this example are useful when only a few variables are used. See TrivailExample2 for a class using evaluate(var) where var is an array of values for all 26 variables. TrivialExample uses techniques suitable when only the "common" variables t, x, and y are used.

To evaluate prefix or postfix expressions, simply replace "buildFromInfix" by "buildFromPrefix" or "buildFromPostfix".

Requires:
ExprEvaluator.java
EasyFormat.java
DoubleScanner.java

Constructor Summary

Constructors

Constructor and Description
TrivialExample3() Constructor for TrivialExample3.

Method Summary

Modifier and Type	Method and Description
static void	main(java.lang.String[] args) Trivial main program that starts the application.

Methods inherited from class java.lang.Object

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

Constructor Detail

TrivialExample3

public TrivialExample3()

Constructor for TrivialExample3. Note: in this case, the expression only uses variables a, x and y. The values are passed one at time using setValueOf and then the 0 parameter version of evaluate is used.

Method Detail

main

public static void main(java.lang.String[] args)

Trivial main program that starts the application.