Package com.github.tonyluo.excel.util

Class NumberUtils

java.lang.Object
com.github.tonyluo.excel.util.NumberUtils
public class NumberUtils
extends java.lang.Object
copy from org.apache.commons.lang3.math.NumberUtils

  • Field Summary

    Fields 
    Modifier and Type Field Description
    static boolean IS_JAVA_1_6  
    static java.lang.String JAVA_SPECIFICATION_VERSION  

  • Constructor Summary

    Constructors 
    Constructor Description
    NumberUtils()  

  • Method Summary

    Modifier and Type Method Description
    static boolean isCreatable​(java.lang.String str)
    Checks whether the String a valid Java number.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

  • Constructor Details

  • Method Details

    • isCreatable

      public static boolean isCreatable​(java.lang.String str)

      Checks whether the String a valid Java number.

      Valid numbers include hexadecimal marked with the 0x or 0X qualifier, octal numbers, scientific notation and numbers marked with a type qualifier (e.g. 123L).

      Non-hexadecimal strings beginning with a leading zero are treated as octal values. Thus the string 09 will return false, since 9 is not a valid octal value. However, numbers beginning with 0. are treated as decimal.

      null and empty/blank String will return false.

      input resulting in true
      Parameters:
      str - the String to check
      Returns:
      true if the string is a correctly formatted number
      Since:
      3.5 the code supports the "+" suffix on numbers except for integers in Java 1.6