Class Structure (3 questions) - Java Discussion Boards

Re: pc sharing

Richard MacCutchan19-Mar-17 22:57

Richard MacCutchan

19-Mar-17 22:57

Forum Guidelines - PLEASE READ - Java Discussion Boards[^.]

gui components for multipart email

ashoknailwal18-Mar-17 9:03

ashoknailwal

18-Mar-17 9:03

I am currently developing an email client as my school project using javafx and gmail api. I have fetched the email content in both format json as well as mimeMessage , I want to know how can I show the email content which is having images links and texts in a javafx UI and what components should I use for the gui

Re: gui components for multipart email

Richard MacCutchan18-Mar-17 22:02

Richard MacCutchan

18-Mar-17 22:02

See Client Technologies: Java Platform, Standard Edition (Java SE) 8 Release 8[^].

Re: gui components for multipart email

ashoknailwal18-Mar-17 23:32

ashoknailwal

18-Mar-17 23:32

I want to know that whether, I have to extract images text individually from the json object and then display them accordingly , or I have to use a webview if so then how ? or there is something else I have to do.

Re: gui components for multipart email

Richard MacCutchan19-Mar-17 2:42

Richard MacCutchan

19-Mar-17 2:42

That is all part of the research you need to do to complete your project. You need to look at each possible item in your email and figure out how you want to display it in the final message that the user sees.

getting error RuntimeException: instantiationException:

Member 1305920814-Mar-17 12:08

Member 13059208

14-Mar-17 12:08

hi,
i.m getting error message while running script

java.lang.RuntimeException: java.lang.InstantiationException:

java.lang.RuntimeException: java.lang.InstantiationException: com.orangeAppScreenPages.UserAgreement
at org.openqa.selenium.support.PageFactory.instantiatePage(PageFactory.java:134)
at org.openqa.selenium.support.PageFactory.initElements(PageFactory.java:64)
at com.testCasesAndroid.SmokeTestingAndroid.Test(SmokeTestingAndroid.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:104)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:645)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:851)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1177)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:129)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:112)
at org.testng.TestRunner.privateRun(TestRunner.java:756)
at org.testng.TestRunner.run(TestRunner.java:610)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:387)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:382)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:340)
at org.testng.SuiteRunner.run(SuiteRunner.java:289)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1293)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1218)
at org.testng.TestNG.runSuites(TestNG.java:1133)
at org.testng.TestNG.run(TestNG.java:1104)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:132)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:236)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:81)
Caused by: java.lang.InstantiationException: com.orangeAppScreenPages.UserAgreement
at java.lang.Class.newInstance(Class.java:427)
at org.openqa.selenium.support.PageFactory.instantiatePage(PageFactory.java:131)
... 27 more
Caused by: java.lang.NoSuchMethodException: com.orangeAppScreenPages.UserAgreement.<init>()
at java.lang.Class.getConstructor0(Class.java:3082)
at java.lang.Class.newInstance(Class.java:412)
... 28 more

===============================================
Default test
Tests run: 1, Failures: 1, Skips: 0
===============================================

===============================================
Default suite
Total tests run: 1, Failures: 1, Skips: 0
Configuration Failures: 1, Skips: 0
===============================================

[TestNG] Time taken by org.testng.reporters.XMLReporter@72c28d64: 6 ms
[TestNG] Time taken by org.testng.reporters.EmailableReporter2@31000e60: 5 ms
[TestNG] Time taken by org.testng.reporters.JUnitReportReporter@47f4e407: 11 ms
[TestNG] Time taken by org.testng.reporters.SuiteHTMLReporter@57ea113a: 13 ms
[TestNG] Time taken by org.testng.reporters.jq.Main@424ebba3: 30 ms
[TestNG] Time taken by [FailedReporter passed=0 failed=0 skipped=0]: 5 ms

Re: getting error RuntimeException: instantiationException:

Richard MacCutchan14-Mar-17 21:51

Richard MacCutchan

14-Mar-17 21:51

Caused by: java.lang.NoSuchMethodException: com.orangeAppScreenPages.UserAgreement.<init>()

The key part of that error message is NoSuchMethodException. You need to go back to the documentation for the class to find out what it should be.

Class Structure (3 questions)

ShikadiMaster13-Mar-17 23:09

ShikadiMaster

13-Mar-17 23:09

So I'm creating a card game and need some help with the best way to structure my classes. Let's use Hearthstone as an example though because lots of people are familiar with it. (No I'm not actually re-creating Hearthstone but many of the structural ideas are common among many card games)

Question 1

Firstly, We have these

[Card] - has a name, cost, class, rarity, set, image, text, effects
[Minion] - a type of card which also has Attack and Health
[Spell] - a type of card
[Weapon] - a type of card which also has Attack and Durability

Those attributes need to be accessed regularly (getAttack() etc) What's the best way to represent this hierarchy in Java classes? I've heard inheritance (Minion extends Card, Spell extends Card, Weapon extends Card) is generally frowned upon. But I also can't see the purpose in making Card an interface. Should I use one of these options anyway or is there a nicer alternative?

Question 2

In a game of Hearthstone each player has a hand, deck, "graveyard", "board" (where minions are played), weapon slot and active Secrets. These are all arrays of Cards although "board" can only contain minions and the weapon slot can only contain a single weapon.

[Card in hand] - has a "base" Card and may have its attributes modified (cost, attack, health) by an effect
[Minion on board] - has a "base" Minion, current Health, may be Divine Shielded/Stealthed, may have its attributes modified by effects
[Weapon equipped] - has a "base" Weapon, current Durability, may have its attributes modified by effects
[Active Secret] - has a "base" Spell and a trigger (something happening that causes it to activate)

Naturally cards can move around between these zones. My original idea is to have a separate class for each zone with an instance variable "Card basecard" and when a card moves from eg hand to board, remove the Card in Hand from the hand array and place a Minion on board in the board array. Again, is there a nicer alternative?

Question 3

Cards have effects. There are different kinds of effects

[Battlecry, Deathrattle] - something happens when the minion is played or dies
[Trigger] - something happens when a specific "trigger" affects the minion while it's on board (eg it takes damage like Acolyte of Pain)
[Continuous] - the minion constantly affects the game in some way while it's on the board (eg buffs other minions like Dire Wolf Alpha)
[Modifier] - the minion constantly modifies its own attributes in some way (eg lowers cost for each other card in hand like Mountain Giant)

Each Card has an array of Effects. But different effects require different methods; Trigger effects have a Trigger, Battlecries often have a "target" which may only include minions with certain attributes, continuous effects don't "do something" at a particular time they just need to be checked constantly by other objects etc

Is there a good way to represent THIS hierarchy? Again, my first thought is to just use inheritance but it gets messy. I know it seems like a big ask but is there a "nice" way to do something like this?

Re: Class Structure (3 questions)

CHill6013-Mar-17 23:15

CHill60

13-Mar-17 23:15

tl;dr; but possibly look at
Factory Patterns - Simple Factory Pattern[^]
and Understanding the Decorator Pattern[^]
The articles are not necessarily referring to Java specifically but I went for the most popular ones - there are others here on CP.
I could also recommend the book "Head First Design Patterns" Freeman & Freeman from O'Reilly press and/or the on-line resource DoFactory[^]

to print the occurence of the unique words in a string using java-->why my counter is not working

LOKENDRA YADAV12-Mar-17 0:58

LOKENDRA YADAV

12-Mar-17 0:58

import java.util.*;
public class Test19 {

public static void main(String[] args) {
String str1="HELLO JAVA HELLO PYTHON";
int count=0;
String str2[]=str1.split(" ");
for(int i=0;i<str2.length;i++){
for(int k=0;k>0;k++){
if(str2[i]!=str2[k]){

count++;

}//if

}//for k
System.out.println(str2[i]+"--> "+count);
}//for i

}
}
--------------------------------------------undesired output-------
HELLO--> 0
JAVA--> 0
HELLO--> 0
PYTHON--> 0
--------------------------------------want like this output-------
JAVA--> 1
PYTHON--> 1

Re: to print the occurence of the unique words in a string using java-->why my counter is not working

Richard MacCutchan12-Mar-17 21:50

Richard MacCutchan

12-Mar-17 21:50

You cannot compare strings in that way, see Comparing Strings and Portions of Strings (The Java™ Tutorials)[^].

Create an HTML file AddCookies.html which contains four text boxes .

Member 1270377511-Mar-17 16:51

Member 12703775

11-Mar-17 16:51

Create an HTML file AddCookies.html which contains four text boxes .When user enters the values in these text boxes and press the submit button, the values will be sent to AddCookies.java servlet and get saved in cookies.

Re: Create an HTML file AddCookies.html which contains four text boxes .

Richard MacCutchan11-Mar-17 22:06

Richard MacCutchan

11-Mar-17 22:06

Forum Guidelines - PLEASE READ - Java Discussion Boards[^].

program to find the last occurence of a character in a string without using built in function

LOKENDRA YADAV8-Mar-17 22:15

LOKENDRA YADAV

8-Mar-17 22:15

am bit confused to get the logic for the programm

Re: program to find the last occurence of a character in a string without using built in function

Jochen Arndt8-Mar-17 22:36

Jochen Arndt

8-Mar-17 22:36

How would you find the first occurence of a character?

By comparing each character starting at the begin of the string until found or reaching the end of the string.

For the last occurence do it similar but start at the end of the string.

Re: program to find the last occurence of a character in a string without using built in function

Patrice T9-Mar-17 15:34

Patrice T

9-Mar-17 15:34

Take a sheet of paper and write a sentence.
How do you find the first space ?
How do you find the last space ?
What is the algorithm difference ?
you program should do the same.

Patrice

“Everything should be made as simple as possible, but no simpler.” Albert Einstein

Re: program to find the last occurence of a character in a string without using built in function

Member 1209512219-Mar-17 22:37

Member 12095122

19-Mar-17 22:37

public static int lastOccunrance(String s ,char c)
{
int index=1;
int foundAtindex=-1;
for(char t:s.toCharArray())
{
if(t==c)
foundAtindex=index;
index++;

}
return foundAtindex;

}

// If not found then return -1

Getting javax.xml.ws.soap.SOAPFaultException: Error in deserializing body of request message for operation xxxx.

Member 130427416-Mar-17 19:53

Member 13042741

6-Mar-17 19:53

I am a Consumer of a SOAP Webservice. where we have one element named "Arrival" in stub given below. This got generated from providers WSDL.

@XmlElement(name = "Arrival", namespace = "https://www.xxxxxxxx.com/xxxxxx/", required = true)

@XmlSchemaType(name = "dateTime")

protected XMLGregorianCalendar arrival;

** As of now we are sending Full Datetime in this element but now they are expecting only "Year" value but when i tried doing it i am getting:-

javax.xml.ws.soap.SOAPFaultException: Error in deserializing body of request message for operation xxxxxx.

Re: Getting javax.xml.ws.soap.SOAPFaultException: Error in deserializing body of request message for operation xxxx.

Richard MacCutchan6-Mar-17 22:25

Richard MacCutchan

6-Mar-17 22:25

Where are you getting this exception? What data is contained in the response?

Audio Steganography

Member 129105895-Mar-17 21:27

Member 12910589

5-Mar-17 21:27

Anyone Help me to explain how does this code works
DataInputStream in= new DataInputStream(new FileInputStream(steg.getFile()));
in.read(byteArray, 0, fileSize);
in.close();
Cipher cipher= Cipher.getInstance("DES");
cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(password.substring(0, 8).getBytes(), "DES"));
byteArray= cipher.doFinal(byteArray);

Re: Audio Steganography

Richard MacCutchan5-Mar-17 22:27

Richard MacCutchan

5-Mar-17 22:27

It reads encrypted information from a file and decrypts it.

Re: Audio Steganography

Member 129105895-Mar-17 22:33

Member 12910589

5-Mar-17 22:33

Can u please explain how that code works.

Re: Audio Steganography

Richard MacCutchan5-Mar-17 22:40