Convertendo array bidimensional de Double em ArrayList

Querendo converter um array bidimensional de Double
em ArrayList, você pode usar este exemplo.
A conversão ocorre dentro de um laço for
que varre o array bidimensional de Double,
e vai adicionando cada elemento na lista do ArrayList.
Para testar o código, basta comentar a classe J,
e seus métodos relacionados.

Veja abaixo uma imagem do programa em execução

Veja abaixo o código do programa:

import java.util.ArrayList;

import java.util.List;

public class PROJETO {

     @SuppressWarnings("unchecked")

     public static void main ( String args [ ] ) {

         int i, j;

         J jht = new J ( );

         jht.title ( " " );

         jht.textbackground ( jht.WHITE );

         jht.Moldura ( ( short ) 1, ( short ) 24, ( short ) 2, ( short ) 68 );

         jht.textcolor ( jht.LIGHTRED );

         jht.gotoxy ( ( short ) 8, ( short ) 2 );

         System.out.printf ( "CONVERTENDO ARRAY BIDIMENSIONAL DE DOUBLE EM ARRAYLIST" );

         jht.textcolor ( jht.LIGHTBLUE );

         jht.gotoxy ( ( short ) 18, ( short ) 4 );

         System.out.printf ( "Impressão normal do Array de Double" );

         Double [ ] [ ] Mat =

             {{ 29.5, 32.1, 43.4, 54.8, 18.8 },

              {  65.2, 76.3, 87.6, 98.7, 25.0 },

              {  39.9, 42.1, 55.2, 64.3, 77.5}};

         jht.textcolor ( jht.LIGHTRED );

         for ( i = 0; i < Mat.length; i++ ) {

              jht.gotoxy ( ( int ) 21, ( int ) i + 6 );

              for ( j = 0; j < Mat [ i ].length; j++ ) {

                   System.out.print ( " " );

                   System.out.print ( Mat [ i ] [ j ] );

              }

         }

         jht.getche ( );

         // //////////////////////////////////////////////////////

         List arrList = new ArrayList ( );   

         int tam = Mat.length;

         for ( i = 0; i < tam; ++i ) {

              int tam_2 = Mat [ 0 ].length;

              for ( j = 0; j < tam_2; ++j ) {

                   arrList.add ( Mat [ i ] [ j ] );

              }

         }

         jht.textcolor ( jht.LIGHTBLUE );

         jht.gotoxy ( ( short ) 18, ( short ) 11 );

         System.out.printf ( "Abaixo a impressão do ArrayList" );

         jht.textcolor ( jht.LIGHTMAGENTA );

         for ( i = 0; i < arrList.size ( ); i++ ) {

              if ( i == 0 )

                   jht.gotoxy ( ( int ) 21, ( int ) 13 );

              if ( i == 5 )

                   jht.gotoxy ( ( int ) 21, ( int ) 14 );

              if ( i == 10 )

                   jht.gotoxy ( ( int ) 21, ( int ) 15 );

              if ( i == 15 )

                   jht.gotoxy ( ( int ) 21, ( int ) 16 );

              System.out.print ( " " );

              System.out.print ( arrList.get ( i ) );

         }

         // ////////////////////////////////////////////

         jht.textbackground ( jht.WHITE );

         jht.Sleep ( ( short ) 1800 );

         jht.textcolor ( jht.LIGHTBLUE );

         jht.gotoxy ( ( short ) 23, ( short ) 19 );

         System.out.printf ( "Por: " );

         jht.textcolor ( jht.LIGHTBLUE );

         System.out.printf ( "Samuel Lima" );

         jht.textcolor ( jht.BLACK );

         jht.gotoxy ( ( short ) 23, ( short ) 20 );

         System.out.printf ( "sa_sp10@hotmail.com" );

         jht.Sleep ( ( short ) 1800 );

         jht.textcolor ( jht.LIGHTRED );

         jht.gotoxy ( ( short ) 29, ( short ) 22 );

         System.out.printf ( "MUITO OBRIGADO" );

         jht.getche ( );

     }

}