I need a code in java langauge with these instructions, and the only instance variable is : 'private char$[][]$ grid;$\text{'}$

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 $|2$

$+0123+$