Question

Write code which takes a sentence as an input from the user and then prints the length of the first word in that sentence. Hint #1: think about how you know where the first word ends - you may assume that the sentence contains more than one word. Hint #2: To make your life easier, use a string method that utilizes space. It looks kind of looks like this: String.method(" "). Sample run 1: Enter a sentence: Everything in its right place 10 Sample run 2: Enter a sentence: Down is the new up
in java

Answer 1

In Java, you can accomplish this task by using the `split` method of the `String` class to separate the words based on spaces. Here's how you could write the program:

```java
import java.util.Scanner;

public class FirstWordLength {
public static void main(String[] args) {
// Create a Scanner object to read input
Scanner scanner = new Scanner(System.in);

// Prompt the user for input
System.out.print("Enter a sentence: ");
String sentence = scanner.nextLine();

// Split the sentence into words
String[] words = sentence.split(" ");

// Get the first word
String firstWord = words[0];

// Print the length of the first word
System.out.println("Length of the first word: " + firstWord.length());

// Close the scanner
scanner.close();
}
}
```

### Explanation:
1. **Scanner**: We use a `Scanner` object to read user input.
2. **Input Prompt**: The user is prompted to enter a sentence.
3. **Split Method**: The sentence is split into an array of words using the `split(" ")` method, which separates the string at each space.
4. **First Word**: We access the first element of the array `words[0]`, which corresponds to the first word of the input sentence.
5. **Length Calculation**: Lastly, we print the length of the first word using the `length()` method.

You can run this code, and it will behave as specified in your request!