Calculator (luna-common 2.6.2 API)

java.lang.Object

com.luna.common.text.Calculator

public class Calculator extends Object

数学表达式计算工具类
见：https://github.com/looly/hutool/issues/1090#issuecomment-693750140

Since:: 5.4.3
Author:: trainliang, looly

Constructor Summary

Constructors

Constructor

Description

Calculator()
Method Summary

Modifier and Type

Method

Description

double

calculate(String expression)

按照给定的表达式计算

boolean

compare(char cur, char peek)

利用ASCII码-40做下标去算术符号优先级

static double

conversion(String expression)

计算表达式的值

static String

getPrintSize(long size)

字节转kb/mb/gb

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

Constructor Details
- Calculator
  
  public Calculator()
Method Details
- conversion
  
  public static double conversion(String expression)
  
  计算表达式的值
  
  Parameters:
  
  expression - 表达式
  
  Returns:
  
  计算结果
- getPrintSize
  
  public static String getPrintSize(long size)
  
  字节转kb/mb/gb
  
  Parameters:
  
  size -
  
  Returns:
- calculate
  
  public double calculate(String expression)
  
  按照给定的表达式计算
  
  Parameters:
  
  expression - 要计算的表达式例如:5+12*(3+5)/7
  
  Returns:
  
  计算结果
- compare
  
  public boolean compare(char cur, char peek)
  
  利用ASCII码-40做下标去算术符号优先级
  
  Parameters:
  
  cur - 下标
  
  peek - peek
  
  Returns:
  
  优先级