I$\text{'}$m confused on how to write this method, in java:

$/**$

$*$ An implementation of $\{$@link Robot$\}$

$*$ that can maintain a fixed number of parts

$*$ of any type.

$*/$

import java.util.Arrays;

public class ArrayRobot implements Robot $\{$

public static final int DEFAULT$\_$CAPACITY $=6$;

private String$[]$ functions;

private Part$[]$ parts;

$//$ TODO: First stub and then write this class

@Override

public boolean addPart$($String function, Part part$)\{$

$//$ TODO Auto$-$generated method stub

return false;

$\}$

@Override

public Part removePart$($String function$)\{$

$//$ TODO Auto$-$generated method stub

return null;

$\}$

@Override

public Part getPart$($String function, int index$)\{$

$//$ TODO Auto$-$generated method stub

return null;

$\}$

$\}$