Operator

java.lang.Object
- jhplot.math.exp4j.operator.Operator

```
public abstract class Operator
extends java.lang.Object
```
Class representing operators that can be used in an expression

Field Summary

Fields
Modifier and Type	Field and Description
`static char[]`	`ALLOWED_OPERATOR_CHARS` The set of allowed operator chars
`static int`	`PRECEDENCE_ADDITION` The precedence value for the addition operation
`static int`	`PRECEDENCE_DIVISION` The precedence value for the division operation
`static int`	`PRECEDENCE_MODULO` The precedence value for the modulo operation
`static int`	`PRECEDENCE_MULTIPLICATION` The precedence value for the multiplication operation
`static int`	`PRECEDENCE_POWER` The precedence value for the power operation
`static int`	`PRECEDENCE_SUBTRACTION` The precedence value for the subtraction operation
`static int`	`PRECEDENCE_UNARY_MINUS` The precedence value for the unary minus operation
`static int`	`PRECEDENCE_UNARY_PLUS` The precedence value for the unary plus operation

Constructor Summary

Constructors
Constructor and Description

Operator(java.lang.String symbol, int numberOfOperands, boolean leftAssociative, int precedence)
Create a new operator for use in expressions

Constructors
Constructor and Description
`Operator(java.lang.String symbol, int numberOfOperands, boolean leftAssociative, int precedence)` Create a new operator for use in expressions

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`abstract double`	`apply(double... args)` Apply the operation on the given operands
`int`	`getNumOperands()` Get the number of operands
`int`	`getPrecedence()` Check the precedence value for the operator
`java.lang.String`	`getSymbol()` Get the operator symbol
`static boolean`	`isAllowedOperatorChar(char ch)` Check if a character is an allowed operator char
`boolean`	`isLeftAssociative()` Check if the operator is left associative

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - PRECEDENCE_ADDITION
```
public static final int PRECEDENCE_ADDITION
```
    The precedence value for the addition operation
    
    See Also:
    
    Constant Field Values
  - PRECEDENCE_SUBTRACTION
```
public static final int PRECEDENCE_SUBTRACTION
```
    The precedence value for the subtraction operation
    
    See Also:
    
    Constant Field Values
  - PRECEDENCE_MULTIPLICATION
```
public static final int PRECEDENCE_MULTIPLICATION
```
    The precedence value for the multiplication operation
    
    See Also:
    
    Constant Field Values
  - PRECEDENCE_DIVISION
```
public static final int PRECEDENCE_DIVISION
```
    The precedence value for the division operation
    
    See Also:
    
    Constant Field Values
  - PRECEDENCE_MODULO
```
public static final int PRECEDENCE_MODULO
```
    The precedence value for the modulo operation
    
    See Also:
    
    Constant Field Values
  - PRECEDENCE_POWER
```
public static final int PRECEDENCE_POWER
```
    The precedence value for the power operation
    
    See Also:
    
    Constant Field Values
  - PRECEDENCE_UNARY_MINUS
```
public static final int PRECEDENCE_UNARY_MINUS
```
    The precedence value for the unary minus operation
    
    See Also:
    
    Constant Field Values
  - PRECEDENCE_UNARY_PLUS
```
public static final int PRECEDENCE_UNARY_PLUS
```
    The precedence value for the unary plus operation
    
    See Also:
    
    Constant Field Values
  - ALLOWED_OPERATOR_CHARS
```
public static final char[] ALLOWED_OPERATOR_CHARS
```
    The set of allowed operator chars
- Constructor Detail
  - Operator
```
public Operator(java.lang.String symbol,
                int numberOfOperands,
                boolean leftAssociative,
                int precedence)
```
    Create a new operator for use in expressions
    
    Parameters:
    
    symbol - the symbol of the operator
    
    numberOfOperands - the number of operands the operator takes (1 or 2)
    
    leftAssociative - set to true if the operator is left associative, false if it is right associative
    
    precedence - the precedence value of the operator
- Method Detail
  - isAllowedOperatorChar
```
public static boolean isAllowedOperatorChar(char ch)
```
    Check if a character is an allowed operator char
    
    Parameters:
    
    ch - the char to check
    
    Returns:
    
    true if the char is allowed an an operator symbol, false otherwise
  - isLeftAssociative
```
public boolean isLeftAssociative()
```
    Check if the operator is left associative
    
    Returns:
    
    true os the operator is left associative, false otherwise
  - getPrecedence
```
public int getPrecedence()
```
    Check the precedence value for the operator
    
    Returns:
    
    the precedence value
  - apply
```
public abstract double apply(double... args)
```
    Apply the operation on the given operands
    
    Parameters:
    
    args - the operands for the operation
    
    Returns:
    
    the calculated result of the operation
  - getSymbol
```
public java.lang.String getSymbol()
```
    Get the operator symbol
    
    Returns:
    
    the symbol
  - getNumOperands
```
public int getNumOperands()
```
    Get the number of operands
    
    Returns:
    
    the number of operands

Class Operator

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

PRECEDENCE_ADDITION

PRECEDENCE_SUBTRACTION

PRECEDENCE_MULTIPLICATION

PRECEDENCE_DIVISION

PRECEDENCE_MODULO

PRECEDENCE_POWER

PRECEDENCE_UNARY_MINUS

PRECEDENCE_UNARY_PLUS

ALLOWED_OPERATOR_CHARS

Constructor Detail

Operator

Method Detail

isAllowedOperatorChar

isLeftAssociative

getPrecedence

apply

getSymbol

getNumOperands