## Demonstration of the mathematical operators

Java Code:
```import java.util.*;

public class MathOps {

// Shorthand to print a string and an int:

static void printInt(String s, int i) {

System.out.println(s + " = " + i);

}

// Shorthand to print a string and a float:

static void printFloat(String s, float f) {

System.out.println(s + " = " + f);

}
public static void main(String[] args) {
// Create a random number generator,
// seeds with current time by default:

Random rand = new Random();

int i, j, k;

// Choose value from 1 to 100:

j = rand.nextInt(100) + 1;

k = rand.nextInt(100) + 1;

printInt("j", j);  printInt("k", k);

i = j + k; printInt("j + k", i);

i = j - k; printInt("j - k", i);

i = k / j; printInt("k / j", i);

i = k * j; printInt("k * j", i);

i = k % j; printInt("k % j", i);

j %= k; printInt("j %= k", j);

// Floating-point number tests:

float u,v,w;  // applies to doubles, too

v = rand.nextFloat();

w = rand.nextFloat();

printFloat("v", v); printFloat("w", w);

u = v + w; printFloat("v + w", u);

u = v - w; printFloat("v - w", u);

u = v * w; printFloat("v * w", u);

u = v / w; printFloat("v / w", u);

// the following also works for

// char, byte, short, int, long,

// and double:

u += v; printFloat("u += v", u);

u -= v; printFloat("u -= v", u);

u *= v; printFloat("u *= v", u);

u /= v; printFloat("u /= v", u);

}

}```