Give me a code in java WITHOUT STRING BUILDER with the only instance variable and constant being:

'private char$[][]$ grid' and 'public static final char EMPTY$=\text{'}\text{'}$;$\text{'}$

please and thank you.

public String toString$($Line theLine$)$

Returns a String similar to the String returned by the above toString$()$ method

$($note that the above toString method does not have any parameters$)$ except that

any letter corresponding to a grid location within theLine will be shown as a

lowercase letter $($hint: you can use Character.toLowerCase$($ch$)$ to convert char ch

to lowercase$).$ The String returned by this method must exactly match the format

given below:

For example,

$($new LetterCrush$(4,3,$"AACADBBDCD"$)).$toString$($new Line$(0,0,$false,$2))$ returns

"CrushLine

$|$aACA$|0$

$|dBBD|1$

$|$CD $|2$

$+0123+"$