Java Utililty Methods Array to String

StringBuffer s = new StringBuffer(arg.toString());
s.append(" : ");
for (int i = 0; i < arg.length; ++i) {
    s.append(arg[i]);
    s.append(" ");
return s.toString();

StringBuilder out = new StringBuilder();
for (int i = 0; i < array.length; i++) {
    for (int j = 0; j < array[0].length; j++) {
        out.append(array[i][j]).append(" ");
    out.append("\n");
return out.toString();
...

StringBuilder sb = new StringBuilder();
sb.append("[");
for (int i = 0; i < ar.length; i++) {
    sb.append(ar[i]);
    if (i + 1 < ar.length)
        sb.append(", ");
sb.append("]");
...

if (arr == null || arr.length == 0) {
    return "";
String str = "[";
for (int i = 0; i < arr.length - 1; i++) {
    str += arr[i] + ",";
str += arr[arr.length - 1] + "]";
...

String result = "[" + arr[0];
for (int i = 1; i < arr.length; i++)
    result += (";" + arr[i]);
result += "]";
return result;

System.out.println(arr.length);
String s = "[";
for (int x = 0; x < arr.length; x++) {
    s += arr[x];
    if (x != arr.length - 1) {
        s += ", ";
s += "]";
return s;

return Arrays.toString(array).replace('[', ' ').replace(']', ' ').replace(',', ' ');

StringBuilder output = new StringBuilder();
for (int i = 0; i < array.length - 1; i++) {
    output.append(String.format("%d\t", array[i]));
output.append(String.format("%d", array[array.length - 1]));
return output.toString();

StringBuilder buf = new StringBuilder();
buf.append("[");
for (int i = 0; i < array.length; i++) {
    if (i > 0) {
        buf.append(" ");
    buf.append(array[i]);
buf.append("]");
return buf.toString();

return Arrays.toString(array).replace('[', ' ').replace(']', ' ').replace(',', ' ');