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

This is not an error... This is what the default toString() implementation of the Object class returns...

[Ljava.lang.String;@163de20

Means:

• array of references ( [L )
• of type String ( java.lang.String )
• unique object ID

Code of Object.toString()

public String toString() {
  return getClass().getName() + "@" + Integer.toHexString(hashCode());
}

What you shouldd do is to use a proper way to print:

• a loop

  StringBuilder sb = new StringBuilder();
  for(String s: myArray) {
      sb.append(s);
      if(sb.length()>0) {
         sb.append(',');
      }
  }
  System.println(s.toString());
  

• Arrays.toString