Programming - final exam

package javaapplication81;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Scanner;

public class JavaApplication81 {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        ArrayList<String> nawakan = new ArrayList();
        try {
            int[][] ar = {{1, 2, 3}, {4, 5, 6}, {8, 9, 0}};
            int[] a = {8, 5, 9, 1, 0};
            int aa = a.length;
            Arrays.sort(a);
            // arraylist
            int b = nawakan.size();
            Collections.sort(nawakan);
            System.out.println("1 bo zyad krdn, 2 bo update krdn, 3 bo srinawa, 4 bo pshandanawa, 5 bo batal krdnaway, 6 bo riz krdn");
            int x = input.nextInt();
            String naw;
            int zhmara;
            while (true) {
                switch (x) {
                    case 1:
                        System.out.println("nawek bnusa");
                        naw = input.next();
                        nawakan.add(naw);
                        break;
                    case 2:
                        for (int i = 0; i < nawakan.size(); i++) {
                            System.out.println(i + "\t" + nawakan.get(i));
                        }
                        System.out.println("Zhmaray aw nawa bnusa ka datawet bigore");
                        zhmara = input.nextInt();
                        System.out.println("bigora ba naweki taza");
                        naw = input.next();
                        nawakan.set(zhmara, naw);
                        break;
                    case 3:
                        for (int i = 0; i < nawakan.size(); i++) {
                            System.out.println(i + "\t" + nawakan.get(i));
                        }
                        System.out.println("Zhmaray aw nawa bnusa ka datawet bisretawa");
                        zhmara = input.nextInt();
                        nawakan.remove(zhmara);
                        break;
                    case 4:
                        if (nawakan.size() != 0) {
                            // for-each
                            for (String n : nawakan) {
                                System.out.println(n);
                            }
                            System.out.println(nawakan);
                        } else {
                            System.out.println("Listakat batala");
                        }
                        break;
                    case 5:
                        nawakan.clear();
                        System.out.println("listakat batal krayawa");
                        break;
                    case 6:
                        Collections.sort(nawakan);
                        Arrays.sort(a);
                        System.out.println("listakat riz kra");
                        break;
                    case 101:
                        for (int row = 0; row < ar.length; row++) {
                            for (int col = 0; col < ar[row].length; col++) {
                                System.out.print(ar[row][col] + "\t");
                            }
                            System.out.println("");
                        }
                        break;
                    case 102:
                        for (int row = 0; row < ar.length; row++) {
                            for (int col = 0; col < ar[row].length; col++) {
                                if (row == col || row + col == ar.length - 1) { // 2, 2, 2
                                    System.out.print(ar[row][col] + "\t");
                                } else {
                                    System.out.print("*\t");
                                }
                            }
                            System.out.println("");
                        }
                        break;
                    case 103:
                        int gawra = input.nextInt();
                        for (int i = 1; i <= gawra; i++) {
                            if (i % 2 == 0) {
                                System.out.println(i + " jwta");
                            } else {
                                System.out.println(i + " taka");
                            }
                        }
                        break;
                    default:
                        System.out.println("Zhmarayaki halaya");
                        break;
                }
                System.out.println("1 bo zyad krdn, 2 bo update krdn, 3 bo srinawa, 4 bo pshandanawa, 5 bo batal krdnaway, 6 bo riz krdn");
                x = input.nextInt();
            }
        } catch (Exception e) {
            System.out.println(e);
        }
    }
}