Created
December 30, 2009 16:48
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| ~/projects/jruby ➔ jirb | |
| irb(main):001:0> class Object ; def blank?; length == 0; end; end | |
| => nil | |
| irb(main):002:0> require 'java' | |
| => true | |
| irb(main):003:0> a = java.util.ArrayList.new | |
| => [] | |
| irb(main):004:0> a << 1 | |
| => [1] | |
| irb(main):005:0> a.blank? | |
| => false |
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