Class expression.Variable 
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Class expression.Variable 

java.lang.Object
   |
   +----expression.Variable
public class Variable
extends Object
An variable in an expression.

Variable Index

o E
The global variable E.
o PI
The global variable PI.
o X
The global variable X.
o Y
The global variable Y.
o Z
The global variable Z.
o val
Current value of a variable.

Constructor Index

o Variable()
Create a default variable without a name.
o Variable(String)
Create a variable with a name.
o Variable(String, double)
Create a variable with a name and its value.

Method Index

o toString()
Returns the string representation of the variable.

Variables

o X 
  public final static Variable X
The global variable X.
o Y 
  public final static Variable Y
The global variable Y.
o Z 
  public final static Variable Z
The global variable Z.
o PI 
  public final static Variable PI
The global variable PI.
o E 
  public final static Variable E
The global variable E.
o val 
  public double val
Current value of a variable.

Constructors

o Variable 
  public Variable()
Create a default variable without a name.
o Variable 
  public Variable(String str)
Create a variable with a name.
o Variable 
  public Variable(String str,
                  double v)
Create a variable with a name and its value.

Methods

o toString 
  public String toString()
Returns the string representation of the variable.
Overrides:
toString in class Object 
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