opendoc.rb

require 'java'
require 'jOpenDocument-1.0.jar'

include_class 'javax.swing.table.AbstractTableModel'
include_class 'org.jopendocument.dom.spreadsheet.SpreadSheet'
include_class 'org.jopendocument.dom.OOUtils'

class MyTable < AbstractTableModel

  def initialize
    @data = [['a',1.0],['b',2.0]]
    @cols = ['month', 'temp']
  end

  def getRowCount; @data.size; end
  def getColumnCount; @cols.size; end
  def getValueAt(row, col); @data[row][col]; end
end

model = MyTable.new

file = java.io.File.new('temp.ods')
SpreadSheet.create_empty(model).save_as(file)
OOUtils.open(file)