Karol Grzeszczak
Level 31
Poland
java: Bankomat is not abstract and does not override abstract method accountBalance(int) in ATM import java.io.*; interface ATM { void BankWithdraw(int a); void BankDeposit(int a); void accountBalance(int a); } class Bankomat implements ATM { int withdraw; int deposit; int balance; // to change amount public void BankBalan
5/22/22
1378views
2comments
0
Karol Grzeszczak
Level 31
Poland
How to run every method ?not only 4,5,6 abstract class transakcjabankowa { private void firstMethodToExecute() { System.out.println("Proszę włożyć kartę:"); } private void secondMethodToExecute() { System.out.println("Proszę podać pin:"); } private void thirdMethodToExecute() { System.out.prin
5/23/22
891views
0comments
0
Karol Grzeszczak
Level 31
Poland
:56:21 java: non-static variable this cannot be referenced from a static context I need two things in one project average grade without minimum and maximum and display of books from the list of which the date of publication is above a certain value import java.awt.print.Book; import java.util.ArrayList; import java.util.Collections; import java.util.LinkedList; public class s
5/27/22
1228views
11comments
0
Anonymous #11008345
Level 1
Subscription I don't understand something, are the courses free or you have to subscribe at a point in time?
5/28/22
790views
0comments
0
Karol Grzeszczak
Level 31
Poland
how to get averarage from hashmap? import java.util.HashMap; import java.util.Map; class Student { String name; String surname; String id; public Student(String name, String surname, String id) { this.name = name; this.surname = surname;
5/29/22
1152views
3comments
0
Karol Grzeszczak
Level 31
Poland
Merging map a with b into c how to do ? import java.util.HashMap; import java.util.Map; class Solution { public static void main(String[] args) { Map<Integer, String> myFavoriteColours = new HashMap<>(); Map<Integer, String> myFriendsFavoriteColours = new HashMap<>(); myFavorit
5/29/22
995views
2comments
0
Anonymous #10987379
Level 22
Difference between the quest New Java Syntax and Java Syntax Zero. It seems as if you get New Java Syntax when the storyline learning style is chosen, but the classic learning style puts you on Java Syntax Zero. It looks as if New Java Syntax is comprised of less levels and tasks. I was wondering if I am going to miss anything substantial for choosing the story lea
5/30/22
2844views
3comments
0
Karol Grzeszczak
Level 31
Poland
How to delete last , ? import java.util.ArrayList; public class List { public static void main (String[] args) { ArrayList companies = new ArrayList<>(); companies.add("DELL"); companies.add("APPLE"); companies.add("SAMSUNG"); companies.add("SONY"); companies.add("
5/30/22
972views
6comments
0
Soham1087
Level 1
kolkata
How does Matrix Multiplication Work Using for-loop? Hi All, In one of my interview, the interviewer asked me about Matrix Multiplication Using for-loop, wanted to understand how does this work? Any code example can anyone suggest to me?
5/30/22
961views
1comment
0
time.bug
Level 1
Guangzhou
初入CODEGYM How are you
5/31/22
856views
0comments
0
Anonymous #11008345
Level 1
Subs Please does one need a subscription in order to complete all the quest or you can complete them without a sub?
6/1/22
1244views
1comment
0
Karol Grzeszczak
Level 31
Poland
set clock import java.time.LocalTime; import java.util.*; public class Main { public static void main(String[] args) { List<Clock> clockList = Clocks.init(); print(clockList); addMinute(clockList ,1); System.out.println(); print(clockList); } priv
6/1/22
1175views
5comments
0