Class TrivialExample2

java.lang.Object

TrivialExample2

public class TrivialExample2
extends java.lang.Object

Class: TrivialExample2.
Description: This trivial examples illustrates how to use the buildFromInfix and evaluate methods in the ExprEvaluator class. This example uses evaluate(vars) where vars is an array of values for all 26 variables.

The techniques in this example may be useful when several variables are used. See Trivial Example3 for an example using the getValueOf(var, value), setValueOf(var), and evaluate() methods. 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
TrivialExample2() Constructor for TrivialExample2.

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

TrivialExample2

public TrivialExample2()

Constructor for TrivialExample2. Note: in this case, the expression uses variables a, x and y. The values of the variables are stored in an array "vars" which is passed by an evaluate method.

Method Detail

main

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

Trivial main program that starts the application.