05. Number 100...200

import java.util.Scanner;

public class Number100To200 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int num = Integer.parseInt(scanner.nextLine());

        if (num < 100) {
            System.out.println("Less than 100");
        } else if (num <= 200) {
            System.out.println("Between 100 and 200");
        } else {
            System.out.println("Greater than 200");
        }
    }
}

ИЛИ:

import java.util.Scanner;

public class Number100To200 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int num = Integer.parseInt(scanner.nextLine());

        System.out.println(num < 100 ? "Less than 100" : num > 200 ? "Greater than 200" : "Between 100 and 200");
    }
}