Objects of String have a fixed length. Nothing can be appended or inserted. Therfore StringBuffer class is used.
public static String list_items (int[] items)
{
StringBuffer result = new StringBuffer();
for (int i=0; i<items.length; i++)
result.append(items[i]+", ");
return result.toString();
}
Internal storage managment: Each StringBuffer object has a certain capacity. If the length exceeds the capacity
it will be rearranged in storage including extra free space automatically.
