Page 271 | CodeGym online Java course - Help

hidden #10412202
Level 8
Question about the task Shortest or longest
Java Syntax, Level 7, Lesson 6
Under discussion
Code runs correctly, test fails package com.codegym.task.task07.task0712; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; /* Shortest or longest */ public class Solution { public static void main(String[] args) throws Exception { //write you
12/25/18
1619views
10comments
0
Paul
Level 24
Vienna
Question about the task Our first converter!
Java Syntax, Level 2, Lesson 2
Resolved
saving a value in a double I don't really get the idea, why saving the result of this calculation in a double doesn't give me the right result: double a = 9/5 ; shouldn't it be the same as : double a = 9/5.0 ; Still I get totally different results and I am wondering why.
10/15/19
995views
2comments
0
Timothy Strong
Level 4
San Diego
Question about the task Minimum of three numbers
Java Syntax, Level 2, Lesson 8
Under discussion
I do know what I am doing wrong?package com.codegym.task.task02.task0216; /* Minimum of three numbers */ public class Solution { public static int min(int a, int b, int c) { int min; if (a <= b && a <= c);{ min = a;} if (b <= c && b <= a);{
10/13/19
1426views
3comments
0
Vahan
Level 41
Tbilisi
Question about the task Table
Java Core, Level 8, Lesson 8
Resolved
How to display the number of elements in the list? None of the solutions (in the comments) were verified! Are there any more?public class Solution { public class TableInterfaceWrapper implements TableInterface { TableInterface rows; public TableInterfaceWrapper (TableInterface rows) { this.rows = rows; } public void setModel(List rows) { // int sizeOfList = row
10/21/19
1081views
2comments
0
hidden #10481736
Level 4
Question about the task Crossing the road blindly
Java Syntax, Level 4, Lesson 4
Under discussion
Trying to use a Math function to solve I get the following error when I use the floor function: com/codegym/task/task04/task0416/Solution.java:17: error: incompatible types: possible lossy conversion from double to int int a = Math.floor(t); I've tried making t a double and a float, and adjusting from input.nextDouble to input.
10/15/19
1495views
2comments
0
Patrick freeman
Level 14
Buffalo
Question about the task One large array and two small ones
Java Syntax, Level 7, Lesson 4
Under discussion
Not understanding how to copy arrays into other arrays I'm struggling to understand the final condition "The program must copy one half of the large array into the first small array, copy the second half into the second array, and then display that array on the screen.". I relied heavily on another question to get this far, and I just don't understand w
10/19/19
1292views
1comment
0
Azamat Aminov
Level 1
Tashkent
Question about the task Console-based piggy bank
Java Syntax, Level 5, Lesson 12
Resolved
Please help me I couldn't find mistake?import java.io.InputStreamReader; import java.util.Scanner; /* Console-based piggy bank */ public class Solution { public static void main(String[] args) throws Exception { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); String name = reader.read
4/5/19
1940views
2comments
0
Ivan
Level 22
Nope
Question about the task Changing functionality
Java Syntax, Level 7, Lesson 12
Resolved
Printing hurdle Guys, what am i doing wrong?
10/18/19
1443views
5comments
0
Sargam
Level 3
Aligarh
Question about the task Our first converter!
Java Syntax, Level 2, Lesson 2
Resolved
can't identify my mistake can't find the error in the formula used i.e. TF=(9/5*celsius)+32
10/15/18
2218views
12comments
0
Mathis Longino
Level 16
Hanover
Question about the task Playing Javarella
Java Syntax, Level 7, Lesson 9
Resolved
What am I doing wrong with the initialization?Hey guys and girls, I have no idea where I am wrong with my solution. The code works perfectly fine. I tried to declare and initialize the lists seperately (e.g. ArrayList<Integer> list = new ArrayList<Integer>();) followed by value-input through the methods in the following lines. In t
10/19/19
1181views
2comments
0
Jimmy Phan
Level 7
Atlanta
Question about the task Crossing the road blindly
Java Syntax, Level 4, Lesson 4
Under discussion
Why are all 3 of my requirements marked off?I know there might be a shorter way to do it but I've decided to do it the longer way lol. All input numbers, 2.5, 3, 4, 5, 60 were inputted and it worked. anything outside of the condition < 0 or > 60 does not work. Any advise? Thanks.
10/21/19
1142views
1comment
0
James Mackenzie
Level 7
Victoria
Question about the task R or L
Java Syntax, Level 7, Lesson 9
Resolved
Logic error? unable to duplicate?the list.add(list.get(i)); Section i feel like it adds it to the end of the list however when it returns it on completion it outputs as if it hasn't been added. what am i missing.
10/17/19
1379views
2comments
0
Anthony Chalk
Level 30
London
Question about the task Notepad for new ideas
Java Syntax, Level 6, Lesson 11
Under discussion
I'm so confused I'm not too sure what's required here and how this is supposed to work, please help. Thank you
10/20/19
1212views
3comments
0
Michael
Level 10
Dresden
Question about the task Do we have a pair?
Java Syntax, Level 4, Lesson 4
Resolved
Tasks resolved, but code does not validate Tasks resolved, but code does not validate. Why? Any idea?
10/13/19
1353views
5comments
2
kapil
Level 12
delhi
Question about the task Distance between two points
Java Syntax, Level 6, Lesson 8
Resolved
problem while verifying...problem.....getDistance method should return distance between points. i have checked the code running in intellij perfectly fine.
10/27/18
2427views
4comments
0
abhijith arjun
Level 12
DeKalb
Question about the task Longest string
Java Syntax, Level 7, Lesson 6
Archived
3 and 4th conditions are not satisfying plz help
8/12/19
1084views
1comment
0
Meera
Level 5
Bantval
Under discussion
Question about IntelliJ Idea Community framework I had downloaded the Community framework version 2018.2.2. However, when I open the application, I get the below error. Failed to load JVM DLL\bin\server\jvm.dll If you already have a 32-bit JDK installed, define a JAVA_Home variable in Computer> System Properties > System Settings > Envi
9/10/19
1651views
1comment
0
Tasnuba Anika
Level 3
New York City
Question about the task Where does a Person come from?
Java Syntax, Level 2, Lesson 2
Under discussion
How to write objects In the Person class, declare the following variables: String name, int age, int weight, int money. In the main method, create a Person object and store a reference to it in the variable person. Hint: Use the following construct to create a Person object and assign a reference to that object to the
10/19/19
2332views
1comment
0
Anonymous #10011987
Level 16
Question about the task Census
Java Syntax, Level 8, Lesson 8
Under discussion
Unable to get correct answer for HashMap I have no idea based on the code I have written, why it is giving an error for the third condition. I have specified 10 entries as (last name, first name) pair. Thanks in advance.
10/18/19
1354views
4comments
0
Patrick freeman
Level 14
Buffalo
Question about the task String array in reverse order
Java Syntax, Level 7, Lesson 4
Resolved
Failing requirement to "display 10 strings, each on a new line"Hello, I keep failing the condition "The program should display 10 strings, each on a new line.". In IntelliJ, it does display 10 strings, and this is the final output if my inputs are string1,string2, etc.: Peter Bishop Walter Bishop string8 string7 string6 string5 string4 string3 string2 string1
10/18/19
1347views
2comments
0
Revathy S
Level 4
trivandrum
Question about the task Plan to conquer the world
Java Syntax, Level 3, Lesson 8
Under discussion
pls help import java.io.*; import java.util.*;
10/18/19
1259views
2comments
0
Anonymous #10011987
Level 16
Question about the task Longest sequence
Java Syntax, Level 8, Lesson 6
Under discussion
Unable to get correct answer for Longest Sequence program using ArrayList I am not able to get a correct solution for my current code. I am using the easiest possible solution for the given problem, using an ArrayList. Thanks in advance. Error: It is telling me to check if my code works for numbers > 127, or not. But I have already set the data type as Integer. It's r
10/17/19
1312views
5comments
0
Anonymous #10386685
Level 9
Question about the task Longest string
Java Syntax, Level 7, Lesson 6
Archived
What is Wrong?It meets the conditions. What is wrong?
11/26/18
1776views
4comments
1
Dusernajder
Level 20
Budapest
Question about the task Prices
Java Core, Level 8, Lesson 11
Under discussion
It works for me I am not sure why are those requirements not validating.
10/13/19
1315views
1comment
0
Carlos Cortázar
Level 17
Madrid
Under discussion
executing linux commands from java I am trying to execute a linux command from my java class using the method exec() from the Runtime class in this way: ////////////////////////////// public static String xxUtilInfoFile (String sPath , String sFileName) throws Exception { Runtime r = null; Process p = nu
10/18/19
948views
1comment
0
John
Level 27
Washington DC
Question about the task Five winners
Java Syntax, Level 8, Lesson 11
Resolved
Why is my code not correct? I tried this in eclipse and it outputs correctly.Why is my code not correct? I tried this in eclipse and it outputs correctly.
10/3/19
1440views
2comments
0
vladimir.plamadeala@endava.com
Level 10
Chisinau
Question about the task Census
Java Syntax, Level 8, Lesson 8
Resolved
Why is two last conditions do not verify? In IntelliJ seems to work fine.package com.codegym.task.task08.task0815; import java.util.ArrayList; import java.util.Collections; import java.util.HashMap; /* Census */ public class Solution { public static HashMap createMap() { HashMap map = new HashMap<>(); map.put("Moldova", "Ian"); map
10/17/19
1579views
3comments
0
Han
Level 24
Question about the task Adding a file to an archive
Java Collections, Level 1, Lesson 6
Resolved
The task doesn't compile on server (but it does on my machine)So when I try to submit this code I get the following error: Error in com/codegym/task/task31/task3105/Solution.java on line 34 cannot find symbol symbol: method readAllBytes() location: variable zipIs of type java.util.zip.ZipInputStream Anyone an idea what I'm doing wrong?
10/17/19
2892views
4comments
0
tony
Level 20
Nis
Question about the task Faster together? We'll see :)
Java Core, Level 7, Lesson 2
Resolved
need help Any idea of how to solve the third requirement?
3/5/19
1435views
3comments
0
Anthony Chalk
Level 30
London
Question about the task Even and odd digits
Java Syntax, Level 6, Lesson 5
Under discussion
I can't find the problem I'm really not sure what's wrong with the code.
10/17/19
1142views
2comments
0

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