java/Running app program at master · Alekha-32/java · GitHub

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package com.alekha.tasks;
import java.util.*;

	 public class RunningApps {
	     static int display(String arr[], int foc, int n) {
	         int focus=0;
	         for (int i = 0; i < n; i++) {
	             if (i == foc) {
	                 System.out.print("<" + arr[i] + ">");
	                 focus = foc;
	             } else {
	                 System.out.print("  "+arr[i]+"   ");
	             }
	         }
	         System.out.println();
	         return focus;
	     }

	     public static void main(String[] args) {
	         Scanner scn = new Scanner(System.in);
	         String arr[] = {
	             "chrome",
	             "explorer",
	             "safari",
	             "firefox"
	         };
	         System.out.println("1. Current");
	         System.out.println("2. Previous");
	         System.out.println("3. Next");
	         System.out.println("4. Exit");
	         int focus = 0;
	         int n = arr.length;
	         int choice = 1;
	         do {
	             System.out.println("Enter your Choice :");
	             choice = scn.nextInt();
	             if (choice == 1) {
	                 display(arr, 0, n);
	             } else if (choice == 2 && focus == 0) {
	                 focus = display(arr, n - 1, n);
	             } else if (choice == 3 && focus == n - 1) {
	                 focus = display(arr, 0, n);
	             } else {
	                 if (choice == 2) {
	                     focus = display(arr, focus - 1, n);
	                 } else if (choice == 3) {
	                     focus = display(arr, focus + 1, n);
	                 }
	             }
	         }while (choice != 4);
	     }
	 }