ArrayList - convertendo em array de inteiros

Apesar do arrayList ser sem dúvidas
muito melhor do que um array simples,
pode acontecer de você futuro programador java
precisar convertê-lo em um array de inteiros.
Neste exemplo lhe mostro como isto pode ser feito,
onde na verdade iremos copiá-lo num array de inteiros
manualmente, isto se torna fácil quando aplicamos
um laço de repetição for para percorrer cada
elemento do ArrayList que é separado pelo método get
e em seguida copiado no array de inteiro
através do método Integer.valueOf.

Veja abaixo uma imagem do programa em execução:

Veja abaixo o código do programa:

import java.util.ArrayList;

import java.util.Arrays;

public class PROJETO {

     public static int  tam  = 100;

     public static void main ( String args [ ] ) {

         J jht = new J ( );

         jht.textbackground ( jht.WHITE );

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

         jht.title ( " " );

         int i;

         int [ ] vet = new int [ tam ];

         ArrayList < String > arrList = new ArrayList <> ( Arrays.asList (

                 "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11",

                 "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22",

                 "23", "24", "25", "26", "27", "28", "29", "30", "31", "32", "33",

                 "34", "35", "36", "37", "38", "39", "40", "41", "42", "43", "44",

                 "45", "46", "47", "48", "49", "50", "51", "52", "53", "54", "55",

                 "56", "57", "58", "59", "60", "61", "62", "63", "64", "65", "66",

                 "67", "68", "69", "70", "71", "72", "73", "74", "75", "76", "77",

                 "78", "79", "80", "81", "82", "83", "84", "85", "86", "87", "88",

                 "89", "90", "91", "92", "93", "94", "95", "96", "97", "98", "99", "100" ) );

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

         vet [ i ] = Integer.valueOf ( arrList.get ( i ) );

         }

         jht.textcolor ( jht.LIGHTRED );

         jht.gotoxy ( ( short ) 15, ( short ) 3 );

         System.out.printf ( "ARRAYLIST - CONVERTENDO EM ARRAY DE INTEIROS" );

         jht.textcolor ( jht.LIGHTBLUE );

         jht.gotoxy ( ( short ) 15, ( short ) 5 );

         System.out.printf ( "ArrayList convertido para array de inteiros" );

         jht.textcolor ( jht.BLACK );

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

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

         if ( i == 0 )

               jht.gotoxy ( ( int ) 15, ( int ) 8 );

         if ( i == 10 )

               jht.gotoxy ( ( int ) 15, ( int ) 9 );

         if ( i == 20 )

               jht.gotoxy ( ( int ) 15, ( int ) 10 );

         if ( i == 30 )

               jht.gotoxy ( ( int ) 15, ( int ) 11 );

         if ( i == 40 )

               jht.gotoxy ( ( int ) 15, ( int ) 12 );

         if ( i == 50 )

               jht.gotoxy ( ( int ) 15, ( int ) 13 );

         if ( i == 60 )

               jht.gotoxy ( ( int ) 15, ( int ) 14 );

         if ( i == 70 )

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

         if ( i == 80 )

               jht.gotoxy ( ( int ) 15, ( int ) 16 );

         if ( i == 90 )

               jht.gotoxy ( ( int ) 15, ( int ) 17 );

         System.out.printf ( " %3d", vet [ i ] );

         }

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

         jht.Sleep ( ( short ) 1800 );

         jht.textcolor ( jht.LIGHTBLUE );

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

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

         jht.textcolor ( jht.LIGHTMAGENTA );

         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 ( );

     }

}