To find number of digits in a number in Java, do this:

`String.valueOf(number).length()`

.Here's how you do it:

```
int number = 123;
int digits = String.valueOf(number).length();
System.out.println(digits); // 3
```

+

To find number of digits in a number in Java, do this:

`String.valueOf(number).length()`

.Here's how you do it:

```
int number = 123;
int digits = String.valueOf(number).length();
System.out.println(digits); // 3
```