5.Java

import java.util.Scanner;

public class zadacha5 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = Integer.parseInt(scanner.nextLine());
        int shir = 3 * n + 6;
        int vis = 3 * n + 1;
        int counter1 = 0;
        int counter2 = 0;

        for (int i = 0; i < n; i++) {
            System.out.print(repeatStr(" ", n));
            System.out.println("~ ~ ~");

        }
        System.out.println(repeatStr("=", 3 * n + 5));
        for (int j = 1; j <= n - 2; j++) {
            String line = "|" + repeatStr("~", 2 * n + 4) + "|" + repeatStr(" ", n - 1) + "|";

            if (j == n / 2) {
                line = "|" + repeatStr("~", n) + "JAVA" + repeatStr("~", n) + "|" + repeatStr(" ", n - 1) + "|";
            }
            System.out.println(line);
        }
        System.out.println(repeatStr("=", 3 * n + 5));

        for (int m = 0; m < n; m++) {

            System.out.print(repeatStr(" ", counter1));
            System.out.print("\\");
            System.out.print(repeatStr("@", 2 * n + 4 + counter2));
            System.out.println("/");
            counter1++;
            counter2 -= 2;
        }
        System.out.println(repeatStr("=", 2 * n + 6));
    }

    static String repeatStr(String str, int count) {
        String text = "";
        {
            for (int j = 0; j < count; j++) {
                text = text + str;
            }
        }
        return text;
    }
}