ExpressionBuilder (exp4j 0.5.2 API)

java.lang.Object
- net.objecthunter.exp4j.ExpressionBuilder

```
public class ExpressionBuilder
extends Object
```
Factory class for Expression instances. This class is the main API entrypoint. Users should create new Expression instances using this factory class.

构造器概要

构造器
构造器和说明

ExpressionBuilder(String expression)
Create a new ExpressionBuilder instance and initialize it with a given expression string.

构造器
构造器和说明
`ExpressionBuilder(String expression)` Create a new ExpressionBuilder instance and initialize it with a given expression string.

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`Expression`	`build()` Build the `Expression` instance using the custom operators and functions set.
`ExpressionBuilder`	`function(Function function)` Add a `Function` implementation available for use in the expression
`ExpressionBuilder`	`functions(Function... functions)` Add multiple `Function` implementations available for use in the expression
`ExpressionBuilder`	`functions(List<Function> functions)` Add multiple `Function` implementations available for use in the expression
`ExpressionBuilder`	`implicitMultiplication(boolean enabled)`
`ExpressionBuilder`	`operator(List<Operator> operators)` Add multiple `Operator` implementations which should be available for use in the expression
`ExpressionBuilder`	`operator(Operator... operators)` Add multiple `Operator` implementations which should be available for use in the expression
`ExpressionBuilder`	`operator(Operator operator)` Add an `Operator` which should be available for use in the expression
`ExpressionBuilder`	`variable(String variableName)` Declare a variable used in the expression
`ExpressionBuilder`	`variables(Set<String> variableNames)` Declare variable names used in the expression
`ExpressionBuilder`	`variables(String... variableNames)` Declare variable names used in the expression

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - ExpressionBuilder
```
public ExpressionBuilder(String expression)
```
    Create a new ExpressionBuilder instance and initialize it with a given expression string.
    
    参数:
    
    expression - the expression to be parsed
- 方法详细资料
  - function
```
public ExpressionBuilder function(Function function)
```
    Add a Function implementation available for use in the expression
    
    参数:
    
    function - the custom Function implementation that should be available for use in the expression.
    
    返回:
    
    the ExpressionBuilder instance
  - functions
```
public ExpressionBuilder functions(Function... functions)
```
    Add multiple Function implementations available for use in the expression
    
    参数:
    
    functions - the custom Function implementations
    
    返回:
    
    the ExpressionBuilder instance
  - functions
```
public ExpressionBuilder functions(List<Function> functions)
```
    Add multiple Function implementations available for use in the expression
    
    参数:
    
    functions - A List of custom Function implementations
    
    返回:
    
    the ExpressionBuilder instance
  - variables
```
public ExpressionBuilder variables(Set<String> variableNames)
```
    Declare variable names used in the expression
    
    参数:
    
    variableNames - the variables used in the expression
    
    返回:
    
    the ExpressionBuilder instance
  - variables
```
public ExpressionBuilder variables(String... variableNames)
```
    Declare variable names used in the expression
    
    参数:
    
    variableNames - the variables used in the expression
    
    返回:
    
    the ExpressionBuilder instance
  - variable
```
public ExpressionBuilder variable(String variableName)
```
    Declare a variable used in the expression
    
    参数:
    
    variableName - the variable used in the expression
    
    返回:
    
    the ExpressionBuilder instance
  - implicitMultiplication
```
public ExpressionBuilder implicitMultiplication(boolean enabled)
```
  - operator
```
public ExpressionBuilder operator(Operator operator)
```
    Add an Operator which should be available for use in the expression
    
    参数:
    
    operator - the custom Operator to add
    
    返回:
    
    the ExpressionBuilder instance
  - operator
```
public ExpressionBuilder operator(Operator... operators)
```
    Add multiple Operator implementations which should be available for use in the expression
    
    参数:
    
    operators - the set of custom Operator implementations to add
    
    返回:
    
    the ExpressionBuilder instance
  - operator
```
public ExpressionBuilder operator(List<Operator> operators)
```
    Add multiple Operator implementations which should be available for use in the expression
    
    参数:
    
    operators - the List of custom Operator implementations to add
    
    返回:
    
    the ExpressionBuilder instance
  - build
```
public Expression build()
```
    Build the Expression instance using the custom operators and functions set.
    
    返回:
    
    an Expression instance which can be used to evaluate the result of the expression

类 ExpressionBuilder

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

ExpressionBuilder

方法详细资料

function

functions

functions

variables

variables

variable

implicitMultiplication

operator

operator

operator

build