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Android Programming By An Example: Creating An Airport Schedule Simulator Application

by Arthur V. Ratz

In this article, we will discuss about the advanced Android application development based on the example of creating a responsive Airport schedule simulator application.

Creating Advanced Tabbed Notepad In Java

by Pritam Zope

In this article, we will create a notepad in Java with features like Multi Tabbed Documents, Document Selector, Openning/Saving/Closing Multiple documents, Running External Programs,Different Look and Feels, Viewing files in Browser, etc.

Android Alert Dialog Tutorial : Working with Time Picker, Date Picker and List Dialogs

by Andy Point

Android Alert Dialog Tutorial : Working with Time Picker, Date Picker and List Dialogs In this tutorial we will discuss how to use dialogs and alerts in Android Apps. A Dialog is a small popup shown to the user to get some additional information from the user or ask him to make some decision. Alert

JTable Spring Hibernate Demo

by Puja Jagani

Spring Hibernate Integration along with JTable widget.

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Yet Another Fluent JDBC Wrapper in 200 Lines of Code

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Resizing Frame and Controls with the Same Ratio in Java

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REST API or SOAP Testing Automation with ZeroCode JSON-Based Open Source Test Framework

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Java8

3 worst problems with this implementation in your opinion? Any improvements

10 Jul 2021 by johnathan indigo

public class AddressBook { private String[] firstNames = new String[1000]; int firstNameCount = 0; private String [] lastNames = new String[1000]; int lastNameCount = 0; private String[] addresses = new String[1000]; int...

3 worst problems with this implementation in your opinion? Any improvements

10 Jul 2021 by OriginalGriff

Well, it's not C. Or Python. Or Javascript. And that's three already ... After that ... it looks like student grade code - which isn't a compliment; it uses magic numbers that aren't explained; it's never head of the modulus operator; the method...

3 worst problems with this implementation in your opinion? Any improvements

10 Jul 2021 by KarstenK

In my mind the worst problem is, that you want to cheat by letting other help you to solve your homework. Bad is ofcourse the use of the "magic numbers" 2 and 1000 and no check for the file input. I personally hate to name a string "bit".

@Jsonproperty annotation means and use

8 Dec 2021 by Member 15435322

I know @JsonProperty annotation can be used in the class of instance fields,which means in the view section what I want to show variable name, it is okay, but what if what annotation do we have to use to show the name of the class as I want in...

[Java]how can I complete this classification program.

2 Feb 2017 by Member 12980589

How can I complete this classification program. I would like to add element to corressponding array list.public class Classification { private ArrayListinteger = new ArrayList(); private ArrayListDouble = new ArrayList(); private ArrayListstring = new...

[Java]how can I complete this classification program.

2 Feb 2017 by CPallini

Quote:public class Classification {Since your class should classify passed data, it makes no sense making it dependent upon a generic parameter.Quote: private ArrayListinteger = new ArrayList(); private ArrayListDouble = new ArrayList(); private ArrayListstring = new...

[Java]struggling with nested IF and else statements

7 Sep 2018 by Member 13124677

Hello and good evening, I've just started Java/programming two days ago and I seem to struggle with nested if/else statements. I've provided my current 'project' down below. The if statements when female works just fine, but the male statements always gives out both the possibility with Mr and...

[Java]struggling with nested IF and else statements

12 Apr 2017 by Dave Kreskowiak

This sniffs of homework so I'm going to blurt out an answer, but look at your curly braces and make sure every closing brace is matched up with an opening brace and the other way around.

[Java]struggling with nested IF and else statements

7 Sep 2018 by Member 13976534

import java.util.Scanner; public class GenderAndMarigeStatus { // i made some changes and now is okey public static void main(String[] args) { Scanner s = new Scanner(System.in); String m = "Male"; String f = "Female"; String Married; System.out.println("What is your gender (male...

Adding an object to a arraylist creates an identifier error?

22 Oct 2016 by Member 12809433

I have some big long code from a group project I'm working on. We all add our own separate classes to an "Army" class that consists of a GUI showing each of our different classes (like "Archer, Ninja, Catapult, etc.).Anyway, I want to create an ArrayList that records each of the objects...

Adding an object to a arraylist creates an identifier error?

22 Oct 2016 by Member 12809433

Turns out I couldn't call methods (like the .add() method) from directly within the class, not in a method. Problem solved :/

Adding Google Login to Android App

28 Aug 2016 by Andy Point

Today Almost all web and mobile apps come with Google and Facebook Login, This is a really useful feature for both the app developer and the user, since almost everybody tend to have a google/gmail and facebook account and moreover while logging in with google you don’t need to remember your UserId

AES256 cannot decrypt previous encryption data after restarting server in java

9 Aug 2021 by Lucius Raleigh

Currently I'm having a problem that I don't know how to solve. It's the decryption and encryption of the string using AES256. Everything was working fine until I restarted the server and I couldn't decode the previous data. Hope everyone can help...

AES256 cannot decrypt previous encryption data after restarting server in java

9 Aug 2021 by OriginalGriff

You are using a random number generator to produce your IV when you encrypt your data : unless that exact IV is used when you decrypt it, what you will get is nonsense. So every time your app is closed, the current IV is discarded and when it is...

Android Alert Dialog Tutorial : Working with Time Picker, Date Picker and List Dialogs

18 Jul 2016 by Andy Point

Android Alert Dialog Tutorial : Working with Time Picker, Date Picker and List Dialogs In this tutorial we will discuss how to use dialogs and alerts in Android Apps. A Dialog is a small popup shown to the user to get some additional information from the user or ask him to make some decision. Alert

Android Download Manager Tutorial: How to Download Files using Download Manager from Internet

17 Jul 2016 by Andy Point

Android Download Manager Tutorial: How to download files using Download Manager from the Internet

Android Flash Light Application Tutorial Using Camera2 API

17 Jul 2016 by Andy Point

Android Flash Light Application Tutorial Using Camera2 API

Android Material Design: Working with Floating Label EditText

17 Jul 2016 by Andy Point

Android Material Design: Working with Floating Label EditText

Android Programming By An Example: Creating An Airport Schedule Simulator Application

1 Aug 2018 by Arthur V. Ratz

In this article, we will discuss about the advanced Android application development based on the example of creating a responsive Airport schedule simulator application.

B-Tree: Another Implementation By Java

2 Dec 2016 by Tung.Nguyen.2k

How to implement B-Tree's searching, insertion and deletion in Java

Begginer error in jcreator !

30 Oct 2018 by WalterCC

Hello! I am having an hard time with a code from my teacher book. In the Code I must display the divisors. I get this error: Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0 at Display.main(afisare.java:7) I am really frustrating , can you help me ? Here code: class...

Begginer error in jcreator !

30 Oct 2018 by Member1x

Ty changing your code from public static void main(String args[ ] ) to public static void main(String[] args) That should solve the problem.

Building ORM Objects and Store Procedures from an ERD Using Java and Eclipse

29 Mar 2016 by Giancarlo Rhodes

ORM objects and basic CRUD operation procedures are first phase tasks that come after establishing a first version of the database. This java-based code generation tool builds those classes and stored procedures.

code-generation

Call center with 3 types of employees: operator, supervisor and a director, in java (maven)

19 May 2018 by Patrice T

Quote: I am still a beginner and I haven't got the problem statement till yet. There is something you don't tell, either you are not a beginner, the assignment is not your level, or you just want us to do your HomeWork. Quote: Can help me with the solution to this problem. So, you show no...

Can any one please anwer this question and explain ?

5 Apr 2018 by Vijay Krishnegowda

class test{ public static void main(String args[]){ b ref=new b(); ref.x=99; ref.show(); }} class a{ int x=10;} class b extends a{ void show(){ a ref=new a(); System.out.println(super.x);}} What I have tried: when i compile i am getting answer as 99 but i am not understanding ?

Can any one please anwer this question and explain ?

5 Apr 2018 by Patrice T

Quote: when i compile i am getting answer as 99 but i am not understanding ? Your code do not behave the way you expect, and you don't understand why ! Use the debugger and see by yourself: There is an almost universal solution: Run your code on debugger step by step, inspect variables. The...

Can any one please anwer this question and explain ?

5 Apr 2018 by CPallini

Class b inherits x data member from class a. Your code assigns it and then prints its value. No surprise the output is 99, I have to say. Please note, in the below codeQuote: void show(){ a ref=new a(); System.out.println(super.x);} the statement a ref=new a(); has NO effect: you are...

can I create an operating system in java

29 Dec 2015 by Member 12235902

if i can program an operating system in java, can you give me push to that wayI have experience in java and I coding network programsso what you advice me..

can I create an operating system in java

30 Dec 2015 by Duncan Edwards Jones

Not really - because java runs on a JVM which in turn runs on top of an operating system.You could write a kernel in another language then write the rest of the "operating system" on top of that..Take a look at OSDev Wiki[^] for all aspects of developing an operating system to get you...

Can I make use of multiple try catch blocks to throws multiple errors or exceptions?

24 Mar 2018 by nidhi01

Below code is of git push command through java everything if I run without using try catch block it successfully pushing the files, But im not getting that how to throw error if user enter wrong url and username and password by using try and catch block can anyone do correct edit in the code for...

Can we have an array of object type in java and how do I flatten this array using stream api

10 Dec 2022 by CodeGuru84

Yes, you can have an array of object type in Java. An array in Java is a container that holds a fixed number of values of a single type. The type of an array can be an object type, such as Object, or any other class type. For example, the...

Can we have an array of object type in java and how do I flatten this array using stream api

18 Jul 2023 by Vibhanshu 2022

Object[] array = { 1, 2, new Object[]{ 3, 4, new Object[]{ 5 }, 6, 7 }; Integer[] flattenedArray = flatten(array); //My function flatten(array) takes Object[]inputArray and returns it into flatten array of type ``` public static...

Can we have an array of object type in java and how do I flatten this array using stream api

23 Sep 2023 by Member 16099189

public static Object[] flatten(Object[] arr) { Stream stream = Arrays.stream(arr); stream = stream.flatMap(o -> o instanceof Object[] ? Stream.of(flatten((Object[]) o)) : Stream.of(o)); Object[] flattenedArray =...

Can you please explain how this regex work in this code ?

13 Apr 2018 by Member 13276583

public class Math { public static void compare(String A, String B) { int a; a= S.replaceAll("[^" + J + "]" , "").length(); String b = S.replaceAll("[^"+ J +"]", ""); System.out.println(a is +a); System.out.println(b is +b); } public static void main(String[] args) {...

Can you please explain how this regex work in this code ?

13 Apr 2018 by Richard MacCutchan

It means all characters that are not in the set in brackets. So [^abc] means any character except a or b or c. See RegExr: Learn, Build, & Test RegEx[^]

Catch block not catching custom exception.

12 Apr 2022 by Sourabh Jambale

This is the implementation class where i've implemented a regex to check correct password: class Implementation { public String passwordValidator(Credentials details) throws WeakPasswordException { String a = "[A-Za-z][A-Za-z0-9]+";...

Catch block not catching custom exception.

12 Apr 2022 by Richard MacCutchan

OK, I managed to test this and your regex patterns are incorrect. Pattern a accepts any alphabetic character followed by any alphanumeric character repeated a number of times. Pattern b accepts any alphanumeric character repeated between 8 and 41...

Changing JTable Layout

19 Jul 2016 by Puja Jagani

Extending the functionality of jTable.

Class and test class with arrays

6 Mar 2017 by Member 13041847

I have been asked to create a class with Attributes name, Stringjob, String roles[], Array of Strings that identifies the rolesof people Constructors:• public Office(String job)• public Office(String job, Stringroles)All Getters and setters for all the...

Class and test class with arrays

6 Mar 2017 by OriginalGriff

We dont; do your homework for you - you wouldn;t learn much, if anythign, if we did!So ... time to start reading: Arrays (The Java™ Tutorials)[^]Because java arrays are a fixed size, you will need to maintain an index of teh "next free element" for your roles array. You can add an item by...

Class and test class with arrays

6 Mar 2017 by Richard MacCutchan

See The Java™ Tutorials[^].

Class and test class with arrays

6 Mar 2017 by Patrice T

We do not do your HomeWork.HomeWork is not set to test your skills at begging other people to do your work, it is set to make you think and to help your teacher to check your understanding of the courses you have taken and also the problems you have at applying them. Any failure of you will...

Collectors Part 1 – Reductions and Short-Circuiting Operations‏

14 Aug 2014 by TheCannyCoder

Reductions and Short-Circuiting Operations

Compile time vs runtime error

10 May 2022 by salam_verdim_alana_panyatkasi_olana

Hi guys. I wondering a thing, which is there any future of programming language, which when we run our app and to see that where happened our error? For example if we assign string to integer it is easy that detect our error, but runtime it is...

Compile time vs runtime error

10 May 2022 by Patrice T

Quote: if we assign string to integer it is easy that detect our error, but runtime it is difficult. May be time to break the debugger. Your code do not behave the way you expect, or you don't understand why ! There is an almost universal...

Compile time vs runtime error

10 May 2022 by Greg Utas

You tagged this as a Java question. Java is typed, so assigning a string to an integer isn't possible. Most software errors are logic errors. The software isn't doing anything illegal. It's just not doing what you intended, but there's no way to...

Conver roman number to number , sum each digit of the number , then the output is convert sum to roman number

11 Aug 2020 by OriginalGriff

We are more than willing to help those that are stuck: but that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for us...

Convert flat object to hierarchy using java stream

7 Nov 2020 by Premnath Kamalanathan

I am trying to use the stream API to convert my flat object list to a hierarchy. I tried to search for similar questions here, but I didn't find one that would work for more than one level as in my case I need it to work for 2 levels. My flat...

Convert mono sampled java sound to stereo

30 Aug 2022 by T1xT

A generated sine sound data are stored in a byte array: double SAMPLE_RATE = 44100.0; double AMPLITUDE = 32768.0; double timeSeconds= 10; int shortBufferSize= (int) (timeSeconds * SAMPLE_RATE); short[] shortBuf = new...

Converting string to long without losing leading zero's

26 Mar 2023 by vor_zakon_developer

I am trying to convert String value to Long type but "0" value losing. For example I am converted this value: "032" --> but it converted only 32 What I have tried: I saw any example but it was not related to my problem.

Converting string to long without losing leading zero's

26 Mar 2023 by CPallini

Short answer: you cannot do that, string leading zeroes are definitely lost. As a workaround (if you badly need it) you could maintain such a piece of information (that is the number of leading zeroes in a separate variable, and use it whenever...

Converting string to long without losing leading zero's

26 Mar 2023 by Richard MacCutchan

Numeric values do not have (or need) leading zeros. The only time they are necessary is when you want to display or print the number, by the use of format strings. For example "%03d" as follows: int number = 32; System.out.printf("%03d%n",...

Converting string to long without losing leading zero's

26 Mar 2023 by OriginalGriff

To add to what Richard and Carlo have said ... When you convert a string to a number, you aren't just stripping away leading zeros - you also convert the number to a value that the computer can understand: binary, stored in a fixed-size variable...

Count number of people who has department starting with given department(from parameter list) ignoring case ?

15 Apr 2021 by Ishmeet Kaur

rollNumberStream has String eg PE11115,HI34565,Pe5567,Pe5137,pe4324,EE21258 and I need to count number of people in specified department(Passed in arguments as dept) case insensitive. If pe is passed it should consider PE11115, Pe5137,pe4324 all...

Count number of people who has department starting with given department(from parameter list) ignoring case ?

15 Apr 2021 by OriginalGriff

Convert them both to lowercase before you compare them. Convert the dept before you start comparing, and use toLower in your lambda to convert x before calling startsWith

Count number of people who has department starting with given department(from parameter list) ignoring case ?

15 Apr 2021 by Ishmeet Kaur

String dept_lower=dept.toLowerCase(); long count_roll=rollNumberStream.filter(x->x.toLowerCase().startsWith(dept_lower)).count();

Creating a simple java command line interface application ?

6 Oct 2017 by Member 13450482

Instructions create a simple CLI (command line interface) application. When we test your application, it must do three things: Welcome the user. Prompt the user for input. Respond differently to different input. Handle bad input and provide an exit option. For example (and please do not make...

Creating a simple java command line interface application ?

6 Oct 2017 by Ravi Bhavnani

This[^] would be a good place to start. And CodeProject, we don't do your work for you. We help you do your work. Unfortunately, we can't help you learn Java and the basics of Java programming. That's something you'll need to do yourself. If you have a specific problem, we'd be glad to try...

Creating Advanced Tabbed Notepad In Java

15 Feb 2017 by Pritam Zope

In this article, we will create a notepad in Java with features like Multi Tabbed Documents, Document Selector, Openning/Saving/Closing Multiple documents, Running External Programs,Different Look and Feels, Viewing files in Browser, etc.

Crimson editor - package issue

29 Jun 2019 by moga2003

Good morning, I have been working on a project for the last few weeks, and I cant seem to figure out what I am doing wrong. When I run the java files, it will not find the Displayable class. This is not the only file in the util package, and yet it is the only one it will not find. I am new to...

Crimson editor - package issue

29 Jun 2019 by Richard MacCutchan

The Displayable.java file needs to define the Displayable interface, in order for the implementing class to import its definitions. Something like: Package until; interface Displayable { public String display() { // other code here } } // end of interface definition For more...

Define a java program to write the student class into a file.

10 Nov 2021 by xcommunicado

Define a java program to write the student class into a file. Register number, course1, mark1, course2 and mark2 are members of the class. Get ‘n’ objects from user and write those into a file. Later, read those objects from the file and find the...

Define a java program to write the student class into a file.

10 Nov 2021 by OriginalGriff

While we are more than willing to help those that are stuck, that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for...

Define a java program to write the student class into a file.

10 Nov 2021 by CPallini

The approach to this question could be: Write the student class as requested. The requirements are pretty clear and you may find tons of related examples on the web. Allow the user to insert objects of the student class. Again you may find...

Deleting large volume of data at once in spring boot in fraction of a second

26 Apr 2023 by Office Systems

How can I delete large amount of data more than 10 million records in fraction of a second in spring boot project, the code I'm having right now takes more than 1 minute and 30s to delete these records. Below is the code I'm using to delete these...

Do java packages provide one more layer of encapsulation?

23 Jan 2018 by Member 13639093

Do packages provide encapsulation, if not what is the difference What I have tried: I'm in my first year programming class, and was taught Encapsulation is basically, hiding variables by making the access modifier private, but do packages basically do the same thing than ? I am unsure because...

Eclipse locking linux mint cinnamon desktop when debugging java app

8 Jul 2016 by JfxDev

I have a reproducible problem with the Mint Cinnamon desktop locking up when hitting a breakpoint debugging with Eclipse. When I say it's locking up, I mean mouse clicks are completely inoperable (even on the Mint panel). Alt-Tab looks like it's working, but selecting another window doesn't...

Error creating bean with name scopedtarget.patientreader defined in class path resource

30 Mar 2023 by Office Systems

'm Creating a spring batch project and I have tried to create all the key components required for the spring batch to run but I'm getting the exception 'Error creating bean with name 'scopedTarget.patientReader' defined in class path resource'...

Error: '{' expected public class main.java { ^ 1 error

12 Aug 2022 by Navya Yanamadala

import java.io.*; import java.util.*; import java.text.*; import java.math.*; import java.util.regex.*; import java.util.*; public class Main.java() { public static String customerDetails[][]=new String[5][3]; Main() {...

Error: '{' expected public class main.java { ^ 1 error

12 Aug 2022 by OriginalGriff

Look at line 7: public class Main.java() { Class names cannot contain decimal points: "Main.java" is not a valid class name. The file extension is not needed as part of a class name. Classes are not methods: the "()" after a name indicates...

Exception in thread "AWT-eventqueue-0" java.lang.nullpointerexception

4 Oct 2018 by smorey

I am trying to add functionality for autocalculate button. I am getting null pointer exception. Can you please help in resolving this Result...

Exception in thread "AWT-eventqueue-0" java.lang.nullpointerexception

4 Oct 2018 by OriginalGriff

Two things: 1) Just dumping your whole app on us and saying in effect "you sort it out - I can't be bothered to even just cut it down to the relevant bits" is not a good idea. Remember we are all volunteers and you want help from us - so the better the information you give us, the better our...

Exception in thread "main" java.lang.arrayindexoutofboundsexception: index 2 out of bounds for length 2 at info_book.main(info_book.java:16)

10 Jan 2022 by Sourabh Jambale

I want to input a 2*3 String array from the user which contains details about the customer including their customer ID, their name and their city name. I want to sort according to their ID and display accordingly. But I'm getting the above error....

Exception in thread "main" java.lang.arrayindexoutofboundsexception: index 2 out of bounds for length 2 at info_book.main(info_book.java:16)

10 Jan 2022 by OriginalGriff

You declare the array as [2][3] - a total of six elements: String info[][] = new String[2][3]; Then you loop though each valid index: for (int i = 0; i

Exception in thread "main" java.lang.arrayindexoutofboundsexception: index 2 out of bounds for length 2 at info_book.main(info_book.java:16)

10 Jan 2022 by CPallini

Quote: for (int i = 0; i 0) { //

Extract key value pair from XML in JAVA code

3 Feb 2021 by CaptainnLevii

I want extract key value pair from xml file in my java code. My XML element that contain key value pair : What I have tried: ...

Extracting Method-Object from Member Invocation

12 Dec 2017 by Vladimir Kolmanovitch

The article allows extracting java.lang.reflect.Method using anonymous class or lambda

Firebase Android Tutorial Part 1 – Getting Started

17 Jul 2016 by Andy Point

Firebase Android Tutorial : Adding Registration and Login Hello Developers, this is our android firebase tutorial. In this tutorial we will create an android firebase app that will use firebase android login functionality. This post will help you get you up and running with integrating Firebase to a

FluentJdbc Query API

18 Jan 2015 by mrcellux

FluentJdbc Query API for more convenient native SQL querying

Full & half password

30 Sep 2018 by Member 14002156

How do I write a Java Program That prompts the user to enter a password and displays it back in the console window. The displayed password should be the entered password halved with the full password total number of characters added at the end. example1: enter your password: abcd your password...

Fun with Loops - 7 Ways To Do Loops in Java 8

30 Jun 2015 by Bobby Lough

An coding exercise using Java 8 trying to do the same summation loop multiple ways

Generate token and use any httpclient to consume rest api

29 Mar 2022 by salam_verdim_alana_panyatkasi_olana

Hi there, I am writing service consume where my consume service make the get request to given endpoint, but there is a problem, which I can not understand that how can I solve it? following link you can read documentation which I develop right...

Getting "reached error page..." with selenium and geckodriver.

1 Sep 2017 by Member 13389746

Hello, I need some help. I have a Java 1.8 test application that uses Selenium 3 and the Firefox Geckodriver. The tests work perfectly when I'm at work but fail when I'm trying to work at home. Since I work exclusively on a virtual machine, and have cloned the work virtual machine for my home...

Getting "reached error page..." with selenium and geckodriver.

1 Sep 2017 by Dave Kreskowiak

You're really only going to get guesses to this one since you've taken a work machine out of the environment it was design and configured to run in. My first guess, the browsers on the machine were configured to go through a proxy server at work, one which does not exist at home.

Given a linear equation in one variable of the form num1 operator num2 = num3

22 Nov 2020 by Member 14999696

Given a linear equation in one variable of the form num1 operator num2 = num3 where any one of num1, num2 or num3 is the variable x and other two are integers. Operators can be any one of +, -, / or *, there may or may not be spaces given between...

Given a linear equation in one variable of the form num1 operator num2 = num3

22 Nov 2020 by OriginalGriff

We are more than willing to help those that are stuck: but that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for us...

Given a linear equation in one variable of the form num1 operator num2 = num3

22 Nov 2020 by Rick York

step 1 : pick a language. step 2 : write logic to open and read a file. step 3 : write logic to parse the data read from the file step 4 : write logic to solve the problem from data parsed step 5 : write logic to output results Four of those...

Google Maps Search Nearby : Displaying Nearby Places using Google Places API and Google Maps API V2

9 Sep 2016 by Andy Point

Google Maps Search Nearby In this post we will learn how to find nearby places in Google Maps. We will first see how to get current location of user and then will add marker on nearby places like Restaurants, Hospitals, Schools etc. You can see demo of this post (Google Maps Search Nearby) in above

Hibernate, spring boot data JPA, relationships

7 Dec 2021 by Member 15435322

I was wondering, what is the best way to create relationships between entities in a project that is being written from scratch, or specify what relationships to have between them? For example, as we can directly understand the relationship...

Hibernate, spring boot data JPA, relationships

7 Dec 2021 by Afzaal Ahmad Zeeshan

Quote: create relationships between entities in a project that is being written from scratch, or specify what relationships to have between them? That's the best part about an ORM. You don't need to think about it yourself (apart from some index,...

How 0 0 9 98 is coming in the java method invoking the program.

16 Sep 2022 by Member 15769941

please explain how 0 0 9 98 is coming in the java method invoking the program. class Jtc2{ public static void main(String[] args) { int ab = 98; System.out .println("ab in Main Before\t:" + ab); Mno ref = new Mno(); ref.showValue(ab); System.out...

How 0 0 9 98 is coming in the java method invoking the program.

16 Sep 2022 by OriginalGriff

Getting your code to run does not mean it is right! :laugh: Think of the development process as writing an email: compiling successfully means that you wrote the email in the right language - English, rather than German for example - not that the...

How 0 0 9 98 is coming in the java method invoking the program.

16 Sep 2022 by Richard MacCutchan

Because you are passing 0 to the recursive call: // assume ab = 9 at this point if (ab != 0) showValue(ab / 10); // i.e. showValue(0)

How can I avoid null using lambda in this case?

20 Oct 2021 by User 15041314

{ "message": "The operation was successful.", "code": 200, "fileDetailResponseDtos": [ { "phoneNumber": "550000000", "textMessage": "Message1", "createDateTime": "2021-10-20T15:45:27.277", "sender": "Anar", ...

How can I design my return response names as I want in restful APİ?

6 Dec 2021 by Member 15435322

Suppose I am returning data like this in rest api: { name:"Ronald", age:25, salary:1500 } But what should I use to design variable names as I want? For example: { Name: "Ronald", Age:25, Salary:1500 } How can I design that only variable...

How can I design my return response names as I want in restful APİ?

6 Dec 2021 by Gerry Schmitz

Quote: The schema helps in a multiple way. It acts as a contract between two teams, serves as a specification, simple to read and easy to follow and you can use it for validation once your APIs are ready. JSON Schema - as a specification,...

How can I give my android spinner a datepicker effect?

8 Jun 2017 by Member 13248960

My application needed two spinners appearing vertically parellel like a datepicker with date and month. I was trying to access the datepicker class object spinner, hide the year column and access the two columns. Can anyone help me on this.Thanks in advance. What I have tried: Field f[] =...

How can I know the webpage that calls a servlet?

3 Jul 2018 by Member 13576671

Hello I have a webpage with a forms that when it submits, runs a servlet. In that servlet I need to know the webpage who calls the servlet. How can I do? I´m using Java 8. Thanks What I have tried: I try with several methods of HttpServletRequest, as getQueryString, getServletPath,...

How can I know the webpage that calls a servlet?

3 Jul 2018 by MadMyche

request.getHeader("referer");

How can I permanently store the data of an array list?

10 Apr 2019 by Member 14030302

I'm currently writing a command line app that takes input from a user through the terminal/command line and appends that data into an array list which is then appended to a text file. The user should be able to perform actions like filtering the contents by name, index, etc. For example, if the...