Can I draw n rectangles using FOR loop in Java?

Question

How can I use or replace the code down below using for-Loop to draw size (25 * 25) rectangles in Java?

if (drawRectangles == 1) {
    graphics.fillRect(430, 428, 25, 25);
}

if (drawRectangles == 2) {graphics.fillRect(430, 428, 25, 25);
    graphics.fillRect(460, 428, 25, 25);
}

if (drawRectangles == 3) {
    graphics.fillRect(430, 428, 25, 25);
    graphics.fillRect(460, 428, 25, 25);
    graphics.fillRect(490, 428, 25, 25);
}

if (drawRectangles == 4) {
    graphics.fillRect(430, 428, 25, 25);
    graphics.fillRect(460, 428, 25, 25);
    graphics.fillRect(490, 428, 25, 25);
    graphics.fillRect(520, 428, 25, 25);
}

Please don't SHOUT. – Some programmer dude Jun 21 '18 at 16:07 — Some programmer dude, Jun 21 '18 at 16:07
Please read [mcve] and enhance your question accordingly. – GhostCat Jun 21 '18 at 16:11 — GhostCat, Jun 21 '18 at 16:11

score 2 · Answer 1 · answered Jun 21 '18 at 16:11

for comprehensions are an integral part of many languages.

Tutorial for Java: docs.oracle.com/../tutorial/../for

Look for regular increments, loops are ideal for this.

You increment your x by 30 each time.

for(int inc = 0; inc  < drawRectangles; inc ++){
    x = 430 + (30 * inc)
    ...
    graphics.fillRect(x, y, x_size, y_size);
}

Consider using variables for things that are static. It makes your code more intuitive and makes it far easier to update and maintain.

Its work Perfectly thank you so much sir Im just beginner student its helped a lot. — jorge cabrera, Jun 21 '18 at 16:21

Can I draw n rectangles using FOR loop in Java?

1 Answers1