Groups > comp.lang.java.programmer > #33959

Lambda reference?

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From	Rhino <no_offline_contact@example.com>
Newsgroups	comp.lang.java.programmer
Subject	Lambda reference?
Date	Mon, 14 Mar 2016 16:32:44 -0400
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I'm just new to Java Lambda expressions. I'm both excited and frustrated 
by the Oracle tutorials describing them: the tutorial shows how powerful 
they are and that's got me keen to know more but I'm not finding the 
detailed references I need to be able to do what I want to do.

For example, they give an example that involves using a stream and a 
filter and then printing some stuff which looks something like:

roster
.stream
.filter ....
... System.out.println();

I'd like to know what *all* my options, not just .stream and .filter. 
I'm also curious to know what are all the things I can do on the last line.

For example, I want to go through a collection and find out how many 
instances of a given agency code are in the collection but have no idea 
how to do that or where to look in the API. I just want to put that 
count in an integer for use later in the program.

I assume there is a reference manual somewhere that tells me all the 
things I can do with my collection using Lambdas but I'm not seeing any 
pointer to that manual in the Oracle material.

-- 
Rhino

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Thread

Lambda reference? Rhino <no_offline_contact@example.com> - 2016-03-14 16:32 -0400
  Re: Lambda reference? Sebastian <news@seyweiler.dyndns.org> - 2016-03-14 21:50 +0100
  Re: Lambda reference? Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-03-14 17:16 -0400
    Re: Lambda reference? Rhino <no_offline_contact@example.com> - 2016-03-14 18:29 -0400
    Re: Lambda reference? Eric Douglas <e.d.programmer@gmail.com> - 2016-03-16 04:53 -0700
      Re: Lambda reference? Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-03-16 08:38 -0400
        Re: Lambda reference? Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-03-16 08:45 -0400
          Re: Lambda reference? Sebastian <news@seyweiler.dyndns.org> - 2016-03-16 21:33 +0100
          Re: Lambda reference? Robert Klemme <shortcutter@googlemail.com> - 2016-03-25 18:35 +0100
            Re: Lambda reference? Eric Douglas <e.d.programmer@gmail.com> - 2016-03-28 07:06 -0700
              Re: Lambda reference? Robert Klemme <shortcutter@googlemail.com> - 2016-03-31 00:09 +0200
                Re: Lambda reference? Eric Douglas <e.d.programmer@gmail.com> - 2016-03-31 04:42 -0700
                Re: Lambda reference? Robert Klemme <shortcutter@googlemail.com> - 2016-03-31 18:35 +0200
                Re: Lambda reference? Eric Douglas <e.d.programmer@gmail.com> - 2016-03-31 11:21 -0700
  Re: Lambda reference? Rhino <no_offline_contact@example.com> - 2016-03-14 21:55 -0400

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