Greater than and less than in one statement

Question

I was wondering  do you have a neat way of doing this    if orderBean getFiles   size    gt  0   amp  amp  orderBean getFiles   size    lt  5    without declaring a variable that is not needed anywhere else    int filesCount   orderBean getFiles   size    if filesCount  gt  0   amp  amp  filesCount  lt  5      I mean  in for loop we are  declaring conditions  for the actual iteration  one can declare a variable and then specify the conditions  Here one can t do it  and neither can do something like   if 5  gt  orderBean getFiles   size    gt  0

User · Accepted Answer

Simple utility method   public static boolean isBetween int value  int min  int max      return  value  gt  min   amp  amp   value  lt  max

User · Answer

If getFiles   returns a java util Collection   getFiles   isEmpty    amp  amp  size lt 5 can be OK   On the other hand  unless you encapsulate the container which provides method such as boolean sizeBetween int min  int max

User · Answer

java is not python   you can t do anything like this  if 0  lt  i  lt  5  or if i in range 0 6     you mentioned the easiest way    int i   getFilesSize    if 0  lt  i  amp  amp  i  lt  5         operations      of     if 0  lt  i          if i  lt  5               operations

User · Answer

Nowadays you can use lodash   var x   1  var y   5  var z   3    inRange z x y     results true

User · Answer

Please just write a static method somewhere and write   if  isSizeBetween orderBean getFiles    0  5            do your stuff

User · Answer

Several third-party libraries have classes encapsulating the concept of a range  such as Apache commons-lang s Range  and subclasses    Using classes such as this you could express your constraint similar to   if  new IntRange 0  5  contains orderBean getFiles   size        though actually Apache s Range is INclusive  so it d be new Range 1  4  - meh   with the added bonus that the range object could be defined as a constant value elsewhere in the class   However  without pulling in other libraries and using their classes  Java s strong syntax means you can t massage the language itself to provide this feature nicely   And  in my own opinion   pulling in a third party library just for this small amount of syntactic sugar isn t worth it

User · Answer

If this is really bothering you  why not write your own method isBetween orderBean getFiles   size   0 5    Another option is to use isEmpty as it is a tad clearer   if  orderBean getFiles   isEmpty    amp  amp  orderBean getFiles   size    lt  5

User · Answer

This is one ugly way to do this  I would just use a local variable   EDIT  If size     0 as well   if  orderBean getFiles   size     Integer MIN VALUE-1  lt  Integer MIN VALUE   5-1

[java] Greater than and less than in one statement

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