Por favor, me ajudem com esse código

import java.util.Random;

public class ClassificBolha

{

static int[] vet = new int[10];

static Random random = new Random();

public static void main(String args[])
{
    preencheVet();
    for(int i = 0; i < vet.length; i++)
    {
        System.out.printf("| %d |",vet[i]);
    }
    System.out.println();
    bolha();
    System.out.println();
    for(int i = 0; i < vet.length; i++)
    {
        System.out.printf("| %d |",vet[i]);
    }
    
}
public static void preencheVet()
{
    for(int i = 0; i < vet.length; i++)
    {
        vet[i] = random.nextInt(100);
    }
}

public static void bolha()
{
    int aux;
    boolean houveMudanca = true;
    while(houveMudanca)
    {
        for( int i = 0; i < vet.length - 1; i++ )
        {
            if(vet[i] > vet[i+1])
            {
                aux = vet[i];
                vet[i] = vet[i+1];
                vet[i+1] = aux;
                houveMudanca = true;
            }
        }
    }
}

public static int[] getVet()
{
    return vet;
}