// create array of ints to describe a line
// x1. y1, x2, y2
int[] line1 = new int[4];

// fill the array by addressing the location of the array and giving it a value
// note that the array starts at position 0 and goes to 3
// even though you initialized the array with the number 4
// summary: 4 positions, numbered 0 through 3
line1[0] = 0;
line1[1] = 0;
line1[2] = 200;
line1[3] = 200;

// draw out that line by referencing the values now stored in the array

line (line1[0], line1[1], line1[2], line1[3]);