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My java output is running but the output does not follow assignment format

Olivia8 — Mon, 25 Mar 2024 06:18:00 GMT

How can my output have the same structure/output as the sample output

Output

Technician ID: FT1001

Name: David Jonathan

Salary: 50000.0

Calculated Salary: 50000.0

 

Technician ID: PTE2001

Name: Keith Peters

Salary: 24.5

Calculated Salary: 980.0

 

Technician ID: FTE1003

Name: Mary Aramal

Salary: 60000.0

Calculated Salary: 60000.0

my output :

Output

FullTime,David Jonathan,FT1001,50000
PartTime,Keith Peters,PTE2001,24.5 
FullTime,Mary Aramal,FTE1003,60000
PartTime,Hassan Otosh ,PTE2002,30.5 
FullTime,Bernard Becker,FTE1004,40000
PartTime,Roselyn Anne,PTE2003,24.5 
FullTime,James Lead,FTE1005,80000

my main class :

Java

public static void main(String[]args) {
		String relativePath = "data/technicians.csv";
		List<BaseTechnician> technicians = new ArrayList<>();

			
			List<String[]> data = CSVReader.readTechnicians(relativePath);
			
			if(data != null) {
		
		
		for(String[]technician : data) {
			
			String position = technician[0];
			
			
			BaseTechnician emp;
			switch(position) {
			case " Fulltime ":
			 emp = new FullTimeTechnician(technician[1], technician[2],Double.parseDouble(technician[3]));
			break;
			case " PartTime ":
			 emp = new PartTimeTechnician(technician[1], technician[2],Double.parseDouble(technician[3]));
				break;
				default:
					System.out.println( position);
					continue;
					
					
			}
			technicians.add(emp);
			
			for(BaseTechnician tech : technicians ) {
				tech.displayDetails();
				
			}
			
		}
		} else {
			System.out.println("Error Failed to read data from the technician CSV file ");
		}
		
	}
	
	
}

Java assignmnent due tonigh!! error message "Index 1 out of bounds for length 1"

Olivia8 — Sun, 24 Mar 2024 16:23:00 GMT

I have an assignment where the main class output mentions Index 1 out of bounds for length 1 and im trying to read a csv file which has 4 rows and 4 columns below is my code and csv file. Please help the assignment is due tonight at midnight Eastern time :/ I am in my first year of computer science and the assignment is for my introduction of Object-oriented programing, I still consider myself beginner.

main class:

Java

public static void main(String[]args) {
		String relativePath = "data/technicians 2.numbers";
		List<BaseTechnician> technicians = new ArrayList<>();

		
		try {
			
			List<String[]> data = CSVReader.readTechnicians(relativePath);
			
			if(data != null) {
		
		
		for(String[]technician : data) {
			String position = technician[0];
			String name = technician[1];
			String technicianId = technician[2];
			double salaryOrHourlyRate = Double.parseDouble(technician[3]);
			
			BaseTechnician emp;
			switch(position) {
			case " Fulltime ":
			 emp = new FullTimeTechnician(name, technicianId,salaryOrHourlyRate);
			break;
			case " PartTime ":
			 emp = new PartTimeTechnician(name, technicianId, salaryOrHourlyRate);
				break;
				default:
					System.out.println(" Wrong technician position ");
					continue;
			}
			technicians.add(emp);
			
			for(BaseTechnician tech : technicians ) {
				tech.displayDetails();
				System.out.println(" Calculated Salary : " + tech.calculateSalary());
				System.out.println();
			}
			
		}
		} else {
			System.out.println("Error Failed to read data from the technician CSV file ");
		}
		
	} catch (Exception e) {
		System.out.println(" Error occured " + e.getMessage() );
	}
		
	}
	
	
}

and csv file:

CSV

FullTime	David Jonathan	FT1001	50000
PartTime	Keith Peters	PTE 2001.00	24.5
FullTime	Mary Aramal	FTE1003	60000
PartTime	Hassan Otosh 	PTE 2002.00	30.5
FullTime	Bernard Becker	FTE1004	40000
PartTime	Roselyn Anne	PTE 2003.00	24.5
FullTime	James Lead	FTE1005	80000

Security Manager gone

jschell — Wed, 20 Mar 2024 22:52:00 GMT

The SecurityManager is being removed from Java?

JEP 411: Deprecate the Security Manager for Removal[^]

For a certain class of problems I found that to be a solution. Without it there is no solution. Certainly in C# such a solution does not exist.

The class of problems is one where the business model allows, as a selling point, customers to create their own code for limited solutions.

For example (and from a real company) if one allows for Content Management creation then allowing for programmatic creation provides many possibilities. But running that in a shared application space means that the company will want to limit access. Not only things like operating system calls but even to make sure that the customer code doesn't spin up 100 threads.

The SecurityManager allows one to prevent that.

Alternatives are not as elegant as it requires spinning up a new process and limiting, some functionality, by the access that the user has.

It is this one feature that I found made Java better than C#.

large numbers

mike7411 — Sun, 14 Jan 2024 23:58:00 GMT

How do you separate large numbers in Java? I want to use something like commas.

I think this works in C++, but it doesn't work in Java:

C++

int onebillion = 1'000'000'000;

Anyone know?

Thanks.

Please help me with this password validation - While Loop Running Once

R1s1ng Phoen1x — Sun, 14 Jan 2024 15:35:00 GMT

I am tryint to validate a password that has the following rules: can't be the same as username, at least 8 characters, and must have a uppercase letter and special character. Any help you can offer would be AMAZING!

import java.util.Scanner;


public class Main {
    static String userName = "johndoe";
    static String password = "ABC_1234";
    static boolean validPassword = false;

    public static void main(String[] args) {
        System.out.println("Please Change Your Password");

        System.out.println("""
                Please make sure it is 8 characters long,
                Contains an uppercase letter,
                Contains a special character,
                Does not contain your username,
                And is not the same as the previous password
                """);

        checkPassword();
    }

    public static void checkPassword() {
        System.out.println();
        System.out.print("What is your new password? ");
        Scanner scanner = new Scanner(System.in);
        String newPassword = scanner.next();
        //System.out.println(newPassword);

        while (!validPassword) {
            if (newPassword.equalsIgnoreCase(userName)) {
                System.out.println("Your password can't be the same as your username");
                System.out.print("What is your new password? ");
                newPassword = scanner.next();


            }
            if (newPassword.length() < 8) {
                System.out.println("You password must be at least 8 characters");
                System.out.print("What is your new password? ");
                newPassword = scanner.next();
                //validPassword = true;
            }
            for (int i = 0; i < newPassword.length(); i++) {
                char ch = newPassword.charAt(i);
                if (!Character.isUpperCase(ch) || (Character.isDigit(ch) && Character.isLetter(ch) && Character.isWhitespace(ch))) {
                    System.out.println("Please make sure your password has an uppercase and/or special character");
                    newPassword = scanner.next();
                    validPassword = true;
                } else {
                    System.out.println("stop");
                    validPassword = false;
                }
            }
        }
    }
}

viewing Java disassembly

mike7411 — Fri, 12 Jan 2024 09:55:00 GMT

I am in IntelliJ IDEA. I want to view the disassembly of this code to see if it does two comparisons:

Java

if (-0.0 == 0.0) System.out.println("they're equal");

Based on searching, it sounds like IntelliJ can't do that. Anyone know of a Java IDE that can do this?

Thank you.

How can I integrate ChatGPT into my Spring Boot application?

Nata Bil — Thu, 28 Dec 2023 09:57:00 GMT

Hi everyone! I want to integrate ChatGPT into my Spring Boot app. How can I do this?

debugger stop button behaving weirdly

mike7411 — Thu, 21 Dec 2023 06:08:00 GMT

I am using IntelliJ IDEA 2023.3.1 (Community Edition), and I'm seeing some weirdness.

I made a simple test.

Java

public class SimpleBreakTest {

    public static void main(String[] args) {
        String a = null;
        a.toUpperCase();
    }


}

I put a breakpoint on the first line:
String a = null;

Then, I debugged the program, and it stopped at the breakpoint. Then, I pressed the "Stop" button in the debugger.

Instead of stopping execution, it looks like it continued because it printed out this message:

Exception in thread "main" java.lang.NullPointerException: Cannot invoke "String.toUpperCase()" because "a" is null
at SimpleBreakTest.main(SimpleBreakTest.java:5)

Any ideas why the stop button in the debugger doesn't seem to work right?

Thanks.

Intellij

anderson mendes 2023 — Tue, 12 Dec 2023 20:13:00 GMT

Friends, how do I use that NetBeens form called "desktop panel", like putting one form inside another. It's that form that traps the other inside it, not letting the form leave the delimited area.
I'm using Intelli

Java strings

mike7411 — Tue, 05 Dec 2023 03:12:00 GMT

I heard that Java string characters are 16-bit. Is this true?

Does this mean that certain Unicode characters can't be represented since there are about 150,000 Unicode characters?

Thank you.

<pre>Problems enlarging Eclipse icons

BrunoV2022 — Sun, 19 Nov 2023 21:57:00 GMT

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.
How can I solve it? Thank you.

How to convert string to double with trailing zeros after decimal

Member 16135433 — Wed, 08 Nov 2023 12:46:00 GMT

Any suggestions in Java for the following scenario:

Actually its truncating trailing zeros when converting to double.
Ex-1:
String - "123.4000"
double - 123.4000

Ex-2:
String - "123.4560"
double - 123.4560

How to use JNI without setting Environment Variables

Valentinor — Mon, 16 Oct 2023 10:54:00 GMT

I found the following code posted by @Richard-MacCutchan to a thread about how to use JNI without having to add the location of jvm.dll into Environment Variables. I kinda understood how it works but still...

C++

/*
 ******************************************************************************
 *
 *    Name     : cpptojava.cpp
 *
 *    Function : Basic Console application to call a Java class.
 *
 *    Created  : 09 Jun 2022
 *
 ******************************************************************************
 */

#include <Windows.h>
#include <iostream>
#include <string>
#include <sstream>
#include <vector>
#include <filesystem> // requires -std:c++17

#include "jni.h"

//
// Find the path to the jvm.dll given the base path to the Java runtime (or JDK if installed)
//
HMODULE LoadDll(
    const char* jrePath
)
{
    const char* pszjvmname = "bin\\server\\jvm.dll";   // Java VM name
    HMODULE hJVMDLL = 0;

    std::filesystem::path jvmpath(jrePath);
    jvmpath /= pszjvmname;
    if (!std::filesystem::exists(jvmpath))
    {
        std::cerr << "JVM library " << jvmpath << " not found." << std::endl;
        // throw an exception 
    }

    // load the Java VM DLL into our address space
    // NB filesystem::path is Unicode
    hJVMDLL = LoadLibraryW(reinterpret_cast<PCWSTR>(jvmpath.c_str()));
    if (hJVMDLL != NULL)
    {
        std::clog << "jvm.dll loaded from: " << jvmpath << std::endl;
    }
    return hJVMDLL; // a Windows HANDLE to the DLL
}


//
// A function to load the Java VM and initialise the JNI interface
// There are a number of diagnostic messages to show progress
//
JNIEnv* AttachJVM(
    const char* jrePath,
    JavaVM* jvm,
    std::string strcwd
)
{
    HMODULE     hJVMDLL = LoadDll(jrePath);
    if (hJVMDLL == 0)
    {
        return nullptr;
    }
    typedef jint(JNICALL* fpCJV)(JavaVM**, void**, void*);
    fpCJV JNI_CreateJavaVM = (fpCJV)::GetProcAddress(hJVMDLL, "JNI_CreateJavaVM");

    // tell the JVM where to find the class
    JavaVMOption    options[2];
    std::stringstream ssoptions;
    ssoptions << "-Djava.class.path=";
    ssoptions << strcwd;
    std::string stropts = ssoptions.str();
    options[0].optionString = const_cast<char*>(stropts.c_str());
    options[1].optionString = const_cast<char*>("-verbose:jni");   // print JNI-related messages

    JavaVMInitArgs  vm_args; // JDK/JRE 6 VM initialization arguments
    vm_args.version = JNI_VERSION_1_8;
    vm_args.nOptions = 1; // change to 2 for verbose output
    vm_args.ignoreUnrecognized = false;
    vm_args.options = options;
    for (int i = 0; i < vm_args.nOptions; ++i)
    {
        std::clog << "Options[" << i << "]: " << options[i].optionString << std::endl;
    }
    JNIEnv* env;            // pointer to native method interface
    jint res = JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);
    if (res != 0)
    {
        std::cerr << "C++: JNI_CreateJavaVM returned: " << res << std::endl;
    }
    jint version = env->GetVersion();
    std::clog << "JVM Version: " << (version >> 16) << "." << (version & 0xffff) << std::endl;

    return env; // the pointer to the jvm dll
}


void CallClass(
    JNIEnv* jniEnv,
    const char* pszClassname,
    const char* pszMethodname,
    const char* pszSignature
)
{
    jclass jvmclass = jniEnv->FindClass(pszClassname);
    if (jvmclass != NULL)
    {
        std::cout << "C++: Found the class: " << pszClassname << std::endl;
        jmethodID jmid = jniEnv->GetStaticMethodID(jvmclass, pszMethodname, pszSignature);
        if (jmid != NULL)
        {
            std::cout << "C++: Found the method: " << pszMethodname << std::endl;
            jniEnv->CallStaticVoidMethod(jvmclass, jmid, NULL);
            std::cout << "C++: env->CallStaticVoidMethod complete" << std::endl;
        }
        else
        {
            std::cerr << "C++: Failed to find the method: " << pszMethodname << std::endl;
        }
    }
    else
    {
        std::cerr << "C++: Failed to find the class: " << pszClassname << std::endl;
    }
}


int main(
    int argc,
    const char** argv
)
{
    const char* jreDir = nullptr;

    // suppress debug messages
    std::clog.setstate(std::ios::badbit);
    for (argv++; argc > 1; ++argv, --argc)
    {
        if (*argv[0] == '-')
        {
            // handle any execution options ...
            if (strstr(*argv, "-d"))
                std::clog.clear();
        }
        else
        {
            jreDir = *argv;
        }
    }
    if (jreDir == nullptr)
    {
        std::cerr << "No root path provided for JVM." << std::endl;
        return 1;
    }
    JNIEnv* jniEnv = NULL;
    std::filesystem::path cwd = std::filesystem::current_path();
    JavaVM jvm;
    jniEnv = AttachJVM(jreDir, &jvm, cwd.string());
    if (jniEnv == NULL)
    {
        std::cerr << "C++: Failed to get Java environment" << std::endl;
        return 1;
    }
        CallClass(jniEnv, "CppToJava", "main", "([Ljava/lang/String;)V");

    // clean up
    jint jvmres = jvm.DestroyJavaVM(); // never returns ???
    std::clog << "C++: DestroyJavaVM and terminate: " << jvmres << std::endl;

}

I have two minor problems, I get a bit lost, I understand that it looks to see if Java in installed and tries to get the path to it and then to load the DLL, but I didn't managed to make it work for my situation, and also, on client machines I'm not making them install Java, but it comes in the app files with a license agreement, I'm using Eclipse Adoptium (...\MyApp\ThirdParty\Eclipse Adoptium\jre-17.0.7.7-hotspot).

If it isn't much to ask, could someone help me change the above code so that it will work in this scenario: Before creating the JVM, I'm running some other functions, and one of them returns the location for the app folder (ex: D:\Program Files\MyApp). Inside that folder are the apps data, and a folder Data, inside it a folder Java, and inside that all the java class files (...\MyApp\Data\Java\JavaMethods.class). So because I know the location of the app, I can give the location for jvm.dll by using the variable std::string location which would have as an example D:\Program Files\MyApp, then to that I can append \ThirdParty\Eclipse Adoptium\jre-17.0.7.7-hotspot\bin\server for the location of jvm.dll.

To be more precise, what I need to add before location.insert(0, "-Djava.class.path=");, to load the jvm.dll knowing it's location by combining like I said, the value from function parameter which would be set before calling the function and would have as an example D:\Program Files\MyApp, with \ThirdParty\Eclipse Adoptium\jre-17.0.7.7-hotspot\bin\server.

Here is an example how my app is using JNI extracted to a new project:

C++

#include <jni.h>
#include <string>
#include <iostream>
#include <chrono>
#include <thread>

JavaVM* jvm = nullptr;

std::string createVM(std::string location) {
	//Here what I need to add to load the dll from location + ThirdParty\Eclipse Adoptium\jre-17.0.7.7-hotspot\bin\server
	location.insert(0, "-Djava.class.path=");
	location.append("Data\\Java");
	JavaVMInitArgs vm_args;
	JavaVMOption* options = new JavaVMOption[1];
	options[0].optionString = &location[0];
	vm_args.version = JNI_VERSION_10;
	vm_args.nOptions = 1;
	vm_args.options = options;
	vm_args.ignoreUnrecognized = false;
	JNIEnv* env = nullptr;
	jint rc = JNI_OK;
	if (jvm == nullptr) {
		rc = JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);
	}
	else {
		rc = jvm->AttachCurrentThread((void**)&env, NULL);
	}
	delete[] options;
	if (rc != JNI_OK) {
		if (rc == JNI_EVERSION)
			return "JNI_EVERSION";
		else if (rc == JNI_ENOMEM)
			return "JNI_ENOMEM";
		else if (rc == JNI_EINVAL)
			return "JNI_EINVAL";
		else if (rc == JNI_EEXIST)
			return "JNI_EEXIST";
		else
			return "JNI_FATALERROR";
	}
	return "JNI_CREATED";
}

std::string createIdentification() {
	JNIEnv* env;
	jvm->AttachCurrentThread((void**)&env, NULL);
	jclass jClass = env->FindClass("JavaMethods");

	if (jClass == nullptr) {
		return "ClassNotFound cI";
	}
	else {
		jmethodID methodID = env->GetStaticMethodID(jClass, "createIdentification", "()Ljava/lang/String;");
		if (methodID == nullptr) {
			return "MethodNotFound cI";
		}
		else {
			jboolean isCopy;
			jstring jResult = (jstring)env->CallStaticObjectMethod(jClass, methodID);
			const char* string = env->GetStringUTFChars(jResult, &isCopy);
			std::string result = string;
			env->ReleaseStringUTFChars(jResult, string);

			return result;
		}
	}
}

int main() {
	//As an example I wrote a possible location
	std::cout << createVM("D:\\Program Files\\MyApp\\").c_str() << std::endl;
	std::cout << createIdentification().c_str();

	std::this_thread::sleep_for(std::chrono::milliseconds(2000));
	return 0;
}

Sending file though socket as byte[]

JohnCodding — Tue, 26 Sep 2023 06:52:00 GMT

I have a socket though which I'm sending files. If the file is under the buffer size (8192 in my case) then it is fine, but if the file is over that size, then when it writes to file, it writes the first chunk of 8192 bites every time. I'm using ObjectStream because beside the file, I'm sending other objects as well in the actual app, but this is the part of sending the file.

Client it sends the file data (testing):

Java

System.out.println("Starting client");
Socket socket = new Socket("localhost", port);
System.out.println("Client sending data");
ObjectOutputStream dataOut = new ObjectOutputStream(socket.getOutputStream());
BufferedInputStream is = new BufferedInputStream(new FileInputStream(inFile));
byte[] buffer = new byte[8192];
int sizeRead = 0;
while ((sizeRead = is.read(buffer, 0, 8192)) >= 0) {
    printByte(buffer, "in"); //Function that writes to a file as strings the byte[], and after 8192 you can see it is the first byte[] each time, also it writes at the end of file
    dataOut.writeObject(true);
    dataOut.writeObject(buffer);
    dataOut.writeObject(sizeRead);
    dataOut.flush();
}
is.close();
System.out.println("Done sending file");
dataOut.writeObject(false);
socket.close();
System.out.println("Client closed");

Server that creates the file:

Java

System.out.println("Starting server");
ServerSocket server = new ServerSocket(port);
System.out.println("Server waiting");
Socket socket = server.accept();
System.out.println("Client connected");
ObjectInputStream dataIn = new ObjectInputStream(socket.getInputStream());
BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(outFile));
Object auxKeepReading = dataIn.readObject();
if (auxKeepReading instanceof Boolean) {
    while ((boolean) auxKeepReading) {
        Object auxBuffer = dataIn.readObject();
        if (!(auxBuffer instanceof byte[])) {
            System.out.println("Broke byte");
            break;
        }
        Object auxSize = dataIn.readObject();
        if (!(auxSize instanceof Integer)) {
            System.out.println("Broke int");
            break;
        }
        printByte((byte[]) auxBuffer, "out"); //Same as on client but different file, it writes at the end of file each time
        bos.write((byte[]) auxBuffer, 0, (int) auxSize);

        auxKeepReading = dataIn.readObject();
        if (!(auxKeepReading instanceof Boolean)) {
            System.out.println("Broke boolean");
            break;
        }
    }
} else {
    System.out.println("Broke boolean");
}
bos.close();
socket.close();
server.close();
System.out.println("Server stopped");

Why is it that it keeps sending the first chunk of byte[], and not what it reads new?

[Solved] Getting and setting a File's all attributes

Valentinor — Mon, 25 Sep 2023 08:47:00 GMT

I made an app (Windows only) with which you can create a backup of a folder/file locally or to a server. I'm done with the copy/restore process, but when it comes to restoring I have a small technical problem. If the file in originally hidden, then this is easy as you can call Files.setAttribute(file.toPath(), "dos:hidden", true); which will make the file hidden on client side after it is created/restored, but there are files like desktop.ini which aren't simply hidden but are system protected hidden and the above code will only give it the hidden status, and not system protected hidden.

There is also Files.getAttribute() but as the name suggests it only returns the attribute value for a single attribute, and not all of them to easily be able to do Files.setAttributes(file.toPath(), Files.getAttributes(file.toPath()));. So my question is, is there a way to get a list will all the attributes a file has and then setting them in a more dynamically way and not having to call Files.getAttribute(); / Files.setAttribute(); for each of them line by line? If unfortunately there isn't one, and you do have to set them line by line, can someone give me a list with all the attributes for Windows OS like there is here for example with DateTimeFormatter[^] for pattern symbols?

Getting java.lang.RuntimeException: ZeroCode Step execution failed. Details:java.lang.NullP

Member 16085274 — Mon, 04 Sep 2023 15:46:00 GMT

Hi,

My Junit test cases are compiled and running fine with

'zerocode-tdd', version: '1.3.1'
'rest-assured', version: '2.9.0'
'JAVA' version '1.8.0'
'gradle' version '6.9.2

Now it is upgraded to

'zerocode-tdd', version: '1.3.33'
'rest-assured', version: '5.3.0'
'JAVA' version '1.11.0'
'gradle' version '8.0.2

My test is compiled. while running getting below error

Test _mytest FAILED

java.lang.RuntimeException: ZeroCode Step execution failed. Details:java.lang.NullPointerException

snippet of code is myTest.java

@Test
@JsonTestCase("zerocode/11_Test.zero")
public void _11_Test() throws Exception {}

Could you please suggest what is wrong.
Thanks in Advance

What is the difference between a static and an instance variable in Java?

Ashley OP — Tue, 08 Aug 2023 09:31:00 GMT

What is the difference between a static and an instance variable in Java?

JavaFX multithreading operation changing GUI elements

JohnCodding — Fri, 21 Jul 2023 16:37:00 GMT

I want to make it so that when the user launches the app, it will display the GUI but at the same time it will launch other threads (multithreading) that will do some calculations and when those are finished they will update some GUI elements (which are always created before the thread with calculations is launched, that is not a problem of getting null), also when a button is pressed same as before using multithreading it will do some calculation and update the GUI after each thread is done.

Now the problem I have is that if you are using Thread(new Runnable)/start(); to launch multiple threads (even one) you get into the error Not on FX application thread. As possible solutions I read about JavaFX Task and Service but those were freezing the GUI thread until they were done.

This is what I tried ("Functions.functionX" is the placeholder, the real function takes between 0-20 seconds to finish):

button.setOnAction(event -> {
    Service<Void> doSomething = new Service<Void>() {
        @Override
        protected Task<Void> createTask() {
            Functions.functionX("parameter");
            return null;
        }
    };
    doSomething.start();
});

Now the problem with this is like I said, when the button is pressed, the GUI is unusable until the function finishes. Using straight Task had the same effect unfortunately.
What do I need to change/add to make it so that I can launch multiple threads at a time, and inside them to change elements from GUI (right now I only want to update some Labels with .setText() inside those threads, each thread updates one Label)?

Operator precedence

darek29021988 — Wed, 12 Jul 2023 15:41:00 GMT

I am complete fresher at Java. Could You help me with https://www.udemy.com/course/learn-java-to-master/learn/quiz/5933562#questions task, please?