Java HELP - Beginner Uni project

[Power_terminated]

I am trying to make a grid where I have 3 different coloured squares the weeds being limited to 7 and the farmer being just 1 square. The rest of the grid is supposed to be green where there is not any of these other 2 blocks. Eventually I will have to use the collide(); in order for the farmer to get rid of the weeds. Any help is greatly appreciated!



[CODE lang="java" highlight="83-106"]
int x = 0;
int y = 0;
int farmer = 1;
int weeds = 7;
int cols = 8;
int rows = 10;
int grid = 80;

IntList seq = new IntList(grid);

boolean[][] myArr = new boolean[cols][rows];

boolean[][] myFarmer = new boolean[cols][rows];

boolean[][] myGrid = new boolean[cols][rows];

void setup() {
size(300, 400);
preset();
setgrids(grid);
setitems(weeds);
setfarmers(farmer);

}

void preset() {
for (int a =0; a<grid; a++) seq.append(a);
seq.shuffle();
}

void setgrid(int rec) {
for (int a = 0; a < cols; a++)
for (int b = 0; b < rows; b++)
if ( seq.get(b+a*rows) == rec ) myGrid[a] = true;
}
void setgrids(int item) {
for ( int f = 0; f < item; f++ ) setgrid(f);
}



void setitem(int rec) { //Start of item weeds
for (int d = 0; d < cols; d++)
for (int e = 0; e < rows; e++)
if ( seq.get(e+d*rows) == rec ) myArr[d][e] = true;
}
void setitems(int item) {
for ( int f = 0; f < item; f++ ) setitem(f);
} //End of weeds


void setfarmer(int rec) { //Start of farmer
for (int g = 0; g < cols; g++)
for (int h = 0; h < rows; h++)
if ( seq.get(h+g*rows) == rec ) myFarmer[g][h] = true;
}

void setfarmers(int item) {
for ( int i = 0; i < item; i++ ) setfarmer(i);
} //End of Farmer

void keyPressed() {
if (key == CODED) {
if (keyCode == UP) {
y -= 1;
} else if (keyCode == DOWN) {
y += 1;
} else if (keyCode == LEFT) {
x -= 1;
} else if (keyCode == RIGHT) {
x += 1;
}
}
}

void collide() {

//int i =id;


}

void draw() {

background(0);

for (int a = 0; a < cols; a++) {
for (int b = 0; b < rows; b++) {
if ( myGrid[a] ) fill(0, 0, 200);
rect(10+a*(36), 10+b*(36), 34, 34);
}
}


for (int c = 7; c > cols; c++) {
for (int d = 7; d < rows; d++) {
if ( myArr[c][d] ) fill(200, 0, 0); //my weeds
rect(10+c*(36), 10+d*(36), 34, 34);
}
}


for (int h = 0; h < cols; h++) {
for (int i = 0; i < rows; i++) {
if ( myFarmer[h] ) fill(0, 0, 200);
rect(10+h+x*(36), 10+i+y*(36), 34, 34);

}}}[/CODE]