# What’s the difference between Float.POSITIVE_INFINITY and Float.MAX_VALUE?

What’s the difference between `Float.POSITIVE_INFINITY` and `Float.MAX_VALUE`? Which is greater? Are they the same?

I came accross them looking for a value that would be greater than every other `float` or failing that all except the greatest. Does either meet that criteria?

Thanks!

## Answer

No, they’re not the same thing at all.

`Float.MAX_VALUE` is the largest finite value that can be represented in a `float`. You won’t find any value greater than that, other than infinity. But you can perform all kinds of other operations on it.

`Float.POSITIVE_INFINITY` is, well, infinity. Most operations involving an infinity will end up with infinity (either positive or negative).

For example:

```public class Test {
public static void main(String[] args) {
testOperations(Float.MAX_VALUE);
testOperations(Float.POSITIVE_INFINITY);
}

public static void testOperations(float input) {
System.out.println("input: " + input);
System.out.println("input / 100: " + input / 100);
System.out.println("input * 100: " + input * 100);
System.out.println("-input: " + (-input));
System.out.println();
}
}
```

Output:

```input: 3.4028235E38
input / 100: 3.4028236E36
input * 100: Infinity
-input: -3.4028235E38

input: Infinity
input / 100: Infinity
input * 100: Infinity
-input: -Infinity
```