Java Forum

Greetings, It is strongly advised to download the first two links to your computer. The first link downloads Sun's Java Tutorial which is an almost mandatory read if you want to get started properly. Having the tutorial available locally can be a convenience even if you're offline. The second link contains the API documentation of all the...

I'm in a really fast pace training program and we are covering a lot of material in a relatively short period of time. I've really not had much trouble up until this problem. I had to do one other problem using concurrency and it worked out well but this problem is stumping me a little. The problem is a non-network black jack game with...

How do i turn on java script on a villaon, callus and itel keypad mobile phone

Hello, good day, I have 2 problems. 1. I can't find the installation path or the option mentioned in this post doesn't appear. https://stackoverflow.com/questions/20718093/eclipse-interface-icons-very-small-on-high-resolution-screen-in-windows-8-1 2. Modifying the eclipse .ini file actually enlarges the icons but deconfigures my entire eclipse....

Hello, I am writing a client/server application for live video streaming. Could anyone please suggest me a library or framework that eases the work? Thank you,

Hello friends, I am working on some tasks like reading data in an Excel file and store in a World file but in an Excel file I have mobile number data I tried to read and store it in World but got the wrong data minus in Excel number format like 9976457605 but when I read data I get data like 2147483647 format. We can do the task only using Java...

what is stream in java? can someone help?

Hello everyone, I recently went through a Java Interview Questions resources and encountered a couple of queries for which I'm seeking answers and suggestions. Query 1: During the interview, I was presented with the following class: java class CricketTeam{ String name; //this is the complete name (inclusive of first and last name)

I wrote the source code for a new application on IOS, when writing there were no errors, but when I ran the code, an error appeared in this place: var t = readLine()! var s = readLine()! var len_s = s.count var t_lis = Set(t) var c_s = Counter(s) var c_t = Counter(t_lis) var c_res = () var summ = 0 for e in c_s{

What is the difference between static and dynamic Polymorphism in java?

Tell Me What Is Thread

Why String is Immutable in Java?

what are packages in java and how do Java Packages improve accessibility and manageability?

I have an “okay” understanding out topics up to basic array rules. Anything after that is making me nervous. What do you guys recommend to learn java? I have a big textbook on it. Should I just crack it open and read page by page? Thank you in advance. I’m trying to excel in my class and want to learn from those who have mastered java.

And Is Java as good as PHP for web development?

Hello in my online university center, they gave me this challenge in Java. 1. Declare an Employee class with String attributes for RFC, first name, last name, street address, postal code, and city. This class must include the object type job attribute of the JobPost class. Declare the JobPost class with String attributes for: code and...

What happens when I run this? public class WhatTheShoot { public static void main(String args){ try { throw null; } catch (Exception e){ System.out.println(e instanceof NullPointerException); System.out.println(e instanceof FileNotFoundException); }

I was curious why the class java.lang.String is defined as final in Java when I first learned about it. I couldn't find an answer back then, but check out this post: How to Create a Java String Class Replica. It reminded me of my question. Sure, String gives all the functionality I've ever required, and I've never considered any action that...

demo1.java: import a; import b; import c; import d; demo2.java: import b;

Nowadays, every back-end developer creates APIs, every QA engineer tests APIs, and every front-end developer uses APIs. Our business is becoming more complicated, and the number of APIs has increased enormously in recent years. While working around APIs, the API documentation becomes the developing team’s center. However, no one like to write...

You have an array on N size with random numbers. Write a multithreaded program that performs the following operations on this array: Thread 1 sorts the even numbers Thread 2 sorts the odd numbers Thread 3 merg the results (even number in the top part of the array).

1. Introduction ElasticJob, one of the sub-projects of the Apache ShardingSphere community, is a distributed scheduling solution oriented towards Internet applications and massive tasks. Since ElasticJob 3.0.1 was released, we’ve received a lot of feedback from users on GitHub. After merging the code committed by the contributors, ElasticJob...

What is the equivalent project file for a Java project? For example, a C# project file is denoted by the delimiter of .csproj. So what would it be for a Java project? Is it dependent on what IDE I am using for Java? I did some search online about this and it seems to me that the answer to this question is dependent on the IDE. From memory,...

Code to delete the file is given below: File file = new File(filePath); file.delete(); But this code does not delete the file. Please post your thoughts on this issue. Regards, Ganesh

https://i0.wp.com/blog.ycrash.io/wp-content/uploads/2022/03/Performance-overview-rafiki-2.png?w=500&ssl=1 Java developers tend to use ‘java.util.UUID#randomUUID()’ API, to generate a UUID (Universally Unique Identifier) number (i.e., ‘b8bbcbed-ca07-490c-8711-5118ee0af2f9’). Under certain circumstances, using this API can affect your...

System.out.println("\t\t Quiz Results"); System.out.printf("%s %15s %15s %15s %15s %n", "Student Name", "Quiz1 Grade", "Quiz2 Grade","Difference", "Average"); System.out.println("==========================================================="); I keep getting errors for the first quotation mark on my code for each of my System.out.print...