Java - Imprimir vector en java

public static void main(String [] args){

    int [] vector = {3,4,5,5};

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

        System.out.print(i);

        if(i + 1 < vector.length){

            System.out.print(", ");

        } else {

            System.out.println();

        }

    }

}

public static void main(String[] args) {

    int[] vector = {3, 4, 5, 5};

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

        System.out.print(i + (i + 1 < vector.length ? ", " : "\n"));

    }

}

public class Vectores{

 public static void main(String args[]){

   int numeros[] = new int[4];

   numeros[0] = 3;

   numeros[1] = 4;

   numeros[2] = 5;

   numeros[3] = 6;

   System.out.print("  " + numeros[0] );

   System.out.print(" , " + numeros[1] );

   System.out.print(" ," + numeros[2] );

   System.out.print(" , " + numeros[3] );

   System.out.print("  " + numeros[4] );

 }

}

import java.util.Arrays;

public static void main(String []args){

    int a[] = { 3, 2, 1, 5, 6, 7 };

    System.out.println(Arrays.toString(a));

}