Getting error on printing array

Question

I got this code:

import java.util.*;
import java.io.*;

public class Oblig3A{
    public static void main(String[]args){
    OrdAnalyse O = new OrdAnalyse();
            


        

Answer 1

Actually this is commonly considered to be a "mistake" of arrays in Java: arrays don't override toString(), sadly. What you see is Object's toString():

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

getClass().getName() + '@' + Integer.toHexString(hashCode())

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A common workaround is to use Arrays.toString():

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