> For the complete documentation index, see [llms.txt](https://pankhaniyajay.gitbook.io/introduction-to-programming-fundamentals-java/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://pankhaniyajay.gitbook.io/introduction-to-programming-fundamentals-java/input-and-output.md).

# Input and output

### Getting input from the user

\
In Java, you can use the `Scanner` class to get input from the user. Here's an example:

```java
import java.util.Scanner;

public class InputExample {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        System.out.print("Enter your name: ");
        String name = scanner.nextLine();

        System.out.print("Enter your age: ");
        int age = scanner.nextInt();

        System.out.println("Hello, " + name + "! You are " + age + " years old.");
    }
}

```

In the above example, we use the `Scanner` class to get input from the user. We first create a new `Scanner` object and pass in `System.in` to indicate that we want to get input from the standard input stream (i.e. the user).

We then use the `nextLine()` method to get a string input from the user, and the `nextInt()` method to get an integer input from the user. We store the input in the `name` and `age` variables, respectively.

### Displaying output to the user

In Java, you can use the `System.out.println()` method to display output to the user. Here's an example:

```java
public class OutputExample {
    public static void main(String[] args) {
        String name = "Alice";
        int age = 25;

        System.out.println("Hello, " + name + "! You are " + age + " years old.");
    }
}
```

In the above example, we use the `System.out.println()` method to display output to the user. We pass in a string that contains the message we want to display, as well as the variables `name` and `age`.

### Using formatted output

In Java, you can use the `System.out.printf()` method to display formatted output to the user. Here's an example:

```java
public class FormatExample {
    public static void main(String[] args) {
        String name = "Alice";
        int age = 25;

        System.out.printf("Hello, %s! You are %d years old.\n", name, age);
    }
}
```

In the above example, we use the `System.out.printf()` method to display formatted output to the user. We pass in a format string that contains placeholders for the variables `name` and `age`. The `%s` placeholder is used for strings, and the `%d` placeholder is used for integers. We then pass in the values of `name` and `age` as additional arguments to the method. The  character is used to add a newline after the message.