Here's a sample code that reads user input using the Scanner class:

import java.util.Scanner;

public class Test {
    public static void main(String[] args) {
        try (Scanner scanner = new Scanner(System.in)) {
            System.out.println("Enter input1: ");
            final String input1 = scanner.nextLine();

            System.out.println("Enter input2: ");
            final int input2 = scanner.nextInt();

            System.out.println("input1: " + input1);
            System.out.println("input2: " + input2);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Here's a sample code that reads user input using the Console class:

import java.io.Console;

public class Test {
    public static void main(String[] args) {
        Console console = System.console();

        final String input1 = console.readLine("Enter input1: ");
        final char[] input2 = console.readPassword("Enter input2: ");

        System.out.println("input1: " + input1);
        System.out.println("input2: " + new String(input2));
    }
}

Here's a sample code that reads from file using the Scanner class:

import java.nio.charset.StandardCharsets;
import java.nio.file.Paths;
import java.util.Scanner;

public class Test {
    public static void main(String[] args) {
        try (Scanner scanner = new Scanner(Paths.get("/opt/file1.txt"), StandardCharsets.UTF_8.name())) {
            while (scanner.hasNext()) {
                String line = scanner.nextLine();
                System.out.println(line);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}