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@Grab(group='joda-time', module='joda-time', version='*')
import org.joda.time.*

//def rand_date(def fr, def to) { // java...
def rand_date = {fr,to->          // groovy!!
  def d = new DateTime(fr)
  def range = Days.daysBetween(d, new DateTime(to)).getDays() + 1
  d.plusDays((Integer)Math.floor(Math.random() * range)).toString("yyyy-MM-dd")
}

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@Grab(group='joda-time', module='joda-time', version='*')
import org.joda.time.*

DateTime.metaClass.random ={t->
  def range = Days.daysBetween(delegate, new DateTime(t)).getDays() + 1
  delegate.plusDays(Math.floor(Math.random() * range) as int).toString("yyyy-MM-dd")
}

rand_date ={f,t ->
  new DateTime(f).random(t)

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class DateRange {
  def range
  def index = 0
  DateRange (f, t) {
    range = (toDate(f)..toDate(t)).toList().with {
      Collections.shuffle(it); it
    }
  }
  
  // 変換処理

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Date.metaClass.getFiscalMonth = { p ->
  cal = Calendar.getInstance();
  cal.setTime(delegate)
  if (cal.get(Calendar.DATE) > p) { cal.add(Calendar.MONTH, 1) }
  cal.set(Calendar.DATE, 1)
  cal.getTime()
}

Date.metaClass.toString = {
  delegate.format('yyyy/MM/dd')

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class FiscalInfoHolder { 
    def month
    def date
    def cal = Calendar.getInstance()

    // 会計年月度の取得    
    def getFiscalYearMonth = {
      cal.setTime(it)
      if (cal.get(Calendar.DATE) > date) { cal.add(Calendar.MONTH, 1) }
      cal.getTime()

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import javax.print.*;
import javax.swing.*;

class PrinterUtil {

    // プリンタ一覧の取得
    static def getPrinterList = {
        List list = []
        PrintServiceLookup.lookupPrintServices(DocFlavor.SERVICE_FORMATTED.PRINTABLE, null).each {
            list.add(it.getName())

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class StopWatch {
    def lapTimes = []
    def startTime
    def stopTime

    def cur   = { System.currentTimeMillis() }
    def start = { startTime = cur() }
    def stop  = { stopTime  = cur() }
    def elapsedTime    = { stopTime - startTime }
    def elapsedLapTime = { lapTimes[it].time - startTime }

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import javax.swing.*;

// VirtualBoxのパス
path = "C:\\Program Files\\Oracle\\VirtualBox\\"

// 仮想マシンのリスト
list = ['RedMine', 'DokuWiki']

// 引数チェック
if (args.size() == 0) {

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private buttonGroup = new javax.swing.ButtonGroup();
private button1 = new javax.swing.JRadioButton();
private button2 = new javax.swing.JRadioButton();
private button3 = new javax.swing.JRadioButton();

buttonGroup.add(button1);
buttonGroup.add(button2);
buttonGroup.add(button3);

public String getSelectedButtonCaption() {

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import javax.swing.*
ButtonGroup.metaClass.getSelectedButtonCaption() {
    caption = ""
    delegate.getElements().each { if (it.isSelected()) caption = it.getText() }
    caption
}

// 実行
buttonGroup = new ButtonGroup()
buttonGroup.add(new JRadioButton("Button1"))