Question

A for statement isn't running inside of my document

Answer 1

package polyDiv;

import java.util.*;

public class polyDivide {

@SuppressWarnings("resource")
public static void main(String[] args) {
//Initialization and decoration//
Scanner in = new Scanner(System.in);
float r, b, d, p;
int i, j;
float[] a, c, n, m;

//Introduction//
System.out.println("Welcome to the Polynomial Divider!");
System.out.println("Divide things like X^2 and so on!");
System.out.println("");

//loopidy loop//
while (true) {
System.out.print("Please input the number of the highest exponent: ");
i = in.nextInt();
n = new float[i];
m = new float[i];
a = new float[i];
c = new float[i];
for (j = 0; j > i; j++) {
System.out.print("Please input a when a is aX^" + (i-j) + ": ");
a[i-j] = in.nextFloat();
}
for (j = 0; j > i; j++) {
System.out.print("Please input c when c is cX^" + (i-j) + ": ");
c[i-j] = in.nextFloat();
}
}
}

}

Answer 2

the second parameter of your for-loops is playing a trick on you.
Read up:
https://docs.oracle.com/javase/tutorial/java/nutsandbolts/for.html
and note the definition:
"When the termination expression evaluates to false, the loop terminates."
since j=0 to start, j>i is already false, so the loop never got executed.