The main difference between nextFloat() and nextInt() is the type of data they read from the input.
1. nextFloat(): This method is used to read the next token from the input as a float value. It reads the input until it encounters a whitespace or a delimiter. If the next token cannot be parsed as a float, it throws an InputMismatchException. For example:
2. nextInt(): This method is used to read the next token from the input as an integer value. It reads the input until it encounters a whitespace or a delimiter. If the next token cannot be parsed as an integer, it throws an InputMismatchException. For example:
```java Scanner scanner = new Scanner(System.in); int intValue = scanner.nextInt(); ```
In summary, nextFloat() reads the next token as a float value, while nextInt() reads the next token as an integer value.