Groovy @ Swing

//chislo.groovy
package groovy
import groovy.swing.SwingBuilder
import javax.swing.*
import java.awt.FlowLayout
import java.util.*
import java.awt.*
import java.awt.event.*
 
public class ArabRim_2 {
  def Arabrim_2 (Arab) { ArabRim m3 = new ArabRim(); def   Rim = m3.Arabrim(Arab); return Rim }}
  def Arabrim (Arab) {ArabRim_2 m4 = new ArabRim_2();  Rim = m4.Arabrim_2(Arab)}
 
public class RimArab_2 {
  def Rimarab_2 (Rim) { RimArab m1 = new RimArab(); def   Arab = m1.Rimarab(Rim); return Arab }}
  def Rimarab (Rim) {RimArab_2 m2 = new RimArab_2();  Arab = m2.Rimarab_2(Rim)}
 
swinger = new SwingBuilder()
gui = swinger.frame(title:'Арабские << >> Римские', size: [540, 160]) {
  panel(layout: new FlowLayout()) {
  arabrim =  new JLabel('Это  приложение  переводит  из  арабской  системы  счисления  в  римскую  и  обратно !')
  arabrim.setBorder(BorderFactory.createEtchedBorder())
  panel().add(arabrim)
  panel(layout: new FlowLayout()) {
    arab = new JLabel('Арабское число:')
      panel().add(arab)
        message1 = textField(columns: 12)
          button11 = swinger.button(text: 'Вычислить', actionPerformed: {message2.setText("${Arabrim(message1.text)}")})
          button12 = swinger.button(text: 'Очистить',  actionPerformed: {message1.setText("")})
    }
  panel(layout: new FlowLayout()) {
    rim  = new JLabel('Римское   число:')
      panel().add(rim)
        message2 = textField(columns: 12)
          button21 = swinger.button(text: 'Вычислить', actionPerformed: {message1.setText("${Rimarab(message2.text)}")})
          button22 = swinger.button(text: 'Очистить',  actionPerformed: {message2.setText("")})
    }}}
gui.show()

//ArabRim.groovy
package groovy
public class ArabRim {
    String Rim, A, r, r2, r1
    Integer i, x, iI, iV, iX, x1
    List L, rim = [ "I", "V", "X", "L", "C", "D", "M"]
  def Arabrim (Arab) {
    A = Arab.reverse(); i = 0; L = []
  for( v in A){ x = v as Integer; iI = i*2; iV = 2*i+1; iX = 2*i+2
    switch (x){
      case 4:    r  = rim[iI] + rim[iV]; break
      case 9:    r  = rim[iI] + rim[iX]; break
      case 1..3: r  = ""; for( int j = 0; j < x;  j++){ r  = r  + rim[iI]}; break
      case 5..8: r2 = ""; x1 = x - 5; for( int j = 0; j < x1; j++){ r2 = r2 + rim[iI]}; r1 = rim[iV]; r = r1 + r2; break
      case 0:    r  = ""; break }
           ++i; L = L + r }
    Rim = L.reverse().join(); return Rim
   }
}

//RimArab.groovy
package groovy
public class RimArab {
    String  f; Integer Arab
    Map rimArab = ["I":1, "V":5, "X":10, "L":50, "C":100, "D":500, "M":1000]
  def Rimarab (Rim) {
    f = Rim.replace("IV", "IIII").replace("IX", "VIIII").replace("XL", "XXXX").replace("XC", "LXXXX").replace("CD", "CCCC").replace("CM", "DCCCC")
    Arab = 0; for(i in f) { Arab = Arab + rimArab[i]}; return Arab
   }
}

//Main1.java
package javaclass;
public class Main {
      public static void main(String args[]) {
        chislo1 m2 = new chislo1();
        m2.run();
        chislo1 m4 = new chislo1();
        m4.run();
    }
}

//chislo1.java
package javaclass;
class chislo1 {
    void run() {
        throw new UnsupportedOperationException("Not yet implemented");
    }
}