How do I return the TextView without ID's using .append()?

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Java

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Hi, noobie developing a linear algebra app here, I am trying to using the the Textview.append() to return some calculations based on the users entry. But since I am using .append for my print method, it shows up with these Id numbers. As stated again, I am a newbie, so any help would be appreciated.

Image of output

print method and where output_ele is

output_ele = (TextView)findViewById(R.id.outputLabel);

<pre lang="cs">

public final void stringprint(String[][] orig, int rowmax, int columnmax)
   {
       for (int i = 1; i <= rowmax; i++) {
           for (int j = 1; j <= columnmax; j++) {
               String entry = String.valueOf(orig[i][j]);

               String tab = "";

               for (int k = 1; k <= 7 - entry.length(); k++) {
                   tab = tab + &quot; &quot;;
               }

               output_ele.append(output_ele + entry + tab);
           }

           output_ele.append(output_ele + "\n");
       }
   }</pre>

Also while I have you here, what would be the easiest way to make the EditText textboxes disappear after the button is pressed??

Any help appreciated..