Question #12791

Complete a program by writing a method called drawGrid that draws a table / grid on the
window from (0,0) to (x,y) where x and y are integers passed to the method drawGrid as
parameters. A method call to drawGrid is given inside mousePressed so you can test your
program by pressing the mouse at different location in the display window. A sample output
is given along side.
A table consists of -
1. a red bordered rectangle with opposite
corners at (0,0) and (x,y)
2. black vertical and horizontal lines from (0,0)
to (x,0) and (0,0) to (0,y) respectively, with a
gap of GAP between them. GAP is a final int
defined at the top of the program.

Expert's answer

public static void drawGrid(int x, int y, Graphics

g){

g.setColor(Color.RED);

g.drawRect(0,0,x,y);

g.setColor(Color.BLACK);

int

x1=0;

int maxY=y/GAP;

int maxX=x/GAP;

for (int i=0; i<maxX;

i++){

x1=GAP*i;

g.drawLine(x1, 0, x1, y);

}

int y1=0;

for (int

i=0; i<maxY; i++){

y1=GAP*i;

g.drawLine(0, y1, x, y1);

}

}

g){

g.setColor(Color.RED);

g.drawRect(0,0,x,y);

g.setColor(Color.BLACK);

int

x1=0;

int maxY=y/GAP;

int maxX=x/GAP;

for (int i=0; i<maxX;

i++){

x1=GAP*i;

g.drawLine(x1, 0, x1, y);

}

int y1=0;

for (int

i=0; i<maxY; i++){

y1=GAP*i;

g.drawLine(0, y1, x, y1);

}

}

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