Java Community | Help. Code. Learn.•2y ago

Why cant i open a JAR?

123 Replies

JavaBotOP•2y ago

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lip•2y ago

https://cdn.discordapp.com/attachments/1253113360359100558/1253113360535519262/image.png?ex=6674ac42&is=66735ac2&hm=ef2af4bcd2c5e71b25fb76b20182fdbf4237bcdbd0678edfcbc4e010e3cf0f9c&

Peter Rader•2y ago

Where do you got that jar from?

0x150•2y ago

the jar doesnt tell java which class its supposed to run you need to either specify the class manually java -cp CurrencyTranslator.jar the.main.Class or get a jar that is properly set up

lip•2y ago

i built it

Peter Rader•2y ago

Well, you need to build it different. How do you build it? Maven?

lip•2y ago

I just compiled it And took the JAR With Maven

Peter Rader•2y ago

You are using mvn package? What is the class name and package of your Main-Methode?

Carter•2y ago

you could use a maven plugin for building the jar correctly. mvn package on it's own isn't going to make it executable. check out maven-assembly-plugin (https://maven.apache.org/plugins/maven-assembly-plugin/)

lip•2y ago

Is this a plugin

Carter•2y ago

yes go to the usage page for details (https://maven.apache.org/plugins/maven-assembly-plugin/usage.html)

lip•2y ago

Do i need to install it from my IDE or its default plugin

Carter•2y ago

you add it to your pom.xml if you don't know how plugins work, I suggest learning about that first.

lip•2y ago

From where I dont understand anything

Carter•2y ago

well do you have a pom.xml?

lip•2y ago

Yep

Carter•2y ago

so the usage page walks you through adding the plugin to your pom.xml just read the whole thing and ask any questions if you're stuck

lip•2y ago

Why is it inside of build section

Carter•2y ago

because that's the rules lol

lip•2y ago

I didnt understand <descriptorRefs> I understand the other ones but not this one

Carter•2y ago

are you looking for a justification as to why it's there?

lip•2y ago

Yep Is it like the thing which compiles project and dependencies

Carter•2y ago

 If you want to use one of the prefabricated assembly descriptors, you configure which descriptor to use with the <descriptorRefs>/<descriptorRef> parameter.

 If you want to use one of the prefabricated assembly descriptors, you configure which descriptor to use with the <descriptorRefs>/<descriptorRef> parameter.

it's just semantics the <descriptorRef>jar-with-dependencies</descriptorRef> is a "prefabricated assembly descriptor" and you're just using those tags so the plugin knows that

lip•2y ago

Why console responds me like this when i use mvn

Carter•2y ago

because you haven't installed maven try the maven wrapper in your project instead

lip•2y ago

So what is the right jar

Carter•2y ago

try it

lip•2y ago

it gives exception

lip•2y ago

Carter•2y ago

show your manifest tags

lip•2y ago

Carter•2y ago

so can you show that class?

lip•2y ago

package com.example.currencytranslator;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.stage.Stage;

import java.io.IOException;

public class CurrencyTranslator extends Application {
    public static void main(String[] args) {
        launch();
    }
    @Override
    public void start(Stage stage) throws IOException {
        FXMLLoader loader = new FXMLLoader(getClass().getResource("mainscreen.fxml"));
        Parent root = loader.load();
        Scene scene = new Scene(root);
        stage.setScene(scene);
        stage.getIcons().add(new Image(String.valueOf(getClass().getResource("icon.png"))));
        scene.getStylesheets().add(getClass().getResource("firstcss.css").toExternalForm());
        Mainscreen screen = loader.getController();
        screen.changeColor();
        stage.setTitle("Currency Conversion");
        stage.setResizable(false);
        stage.show();
    }

}

package com.example.currencytranslator;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.stage.Stage;

import java.io.IOException;

public class CurrencyTranslator extends Application {
    public static void main(String[] args) {
        launch();
    }
    @Override
    public void start(Stage stage) throws IOException {
        FXMLLoader loader = new FXMLLoader(getClass().getResource("mainscreen.fxml"));
        Parent root = loader.load();
        Scene scene = new Scene(root);
        stage.setScene(scene);
        stage.getIcons().add(new Image(String.valueOf(getClass().getResource("icon.png"))));
        scene.getStylesheets().add(getClass().getResource("firstcss.css").toExternalForm());
        Mainscreen screen = loader.getController();
        screen.changeColor();
        stage.setTitle("Currency Conversion");
        stage.setResizable(false);
        stage.show();
    }

}

Carter•2y ago

ahh so with JavaFx there is an extra step you need to make a new class with a main method and have that call CurrencyTranslator's main method I usually call it Launcher then that would be your main class

lip•2y ago

package com.example.currencytranslator;

public class Launcher {
    public static void main(String[] args) {
        CurrencyTranslator.main(args);
    }
}

package com.example.currencytranslator;

public class Launcher {
    public static void main(String[] args) {
        CurrencyTranslator.main(args);
    }
}

like that?

Carter•2y ago

yes

lip•2y ago

but didnt work once again

Carter•2y ago

make sure you updated your pom with this as the new class oh I overlooked the fact you're using the command uncorrectly

java -jar [jar-name].jar

java -jar [jar-name].jar

this I think is still a necessary step though

lip•2y ago

Carter•2y ago

run ./mvnw clean package and try again

lip•2y ago

how do install this

Carter•2y ago

./mvnw the ./ is important

lip•2y ago

Carter•2y ago

hmmm well I guess just use your IDE to run the commands

lip•2y ago

yep i did it

lip•2y ago

like that

Carter•2y ago

yes

lip•2y ago

i do it like that but still didnt work

Carter•2y ago

the same error? can you show your entire pom.xml file?

lip•2y ago

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>CurrencyTranslator</artifactId>
    <version>1.0-SNAPSHOT</version>
    <name>CurrencyTranslator</name>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <junit.version>5.10.0</junit.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-controls</artifactId>
            <version>22-ea+11</version>
        </dependency>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-fxml</artifactId>
            <version>22-ea+11</version>
        </dependency>
        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
            <version>20240303</version>
        </dependency>

        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-api</artifactId>
            <version>${junit.version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-engine</artifactId>
            <version>${junit.version}</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>9</source>
                    <target>9</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>3.6.0</version>
                <configuration>
                    <archive>
                            <manifest>
                                <mainClass>com.example.currencytranslator.Launcher</mainClass>
                            </manifest>
                    </archive>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>

    </build>
</project>

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>CurrencyTranslator</artifactId>
    <version>1.0-SNAPSHOT</version>
    <name>CurrencyTranslator</name>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <junit.version>5.10.0</junit.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-controls</artifactId>
            <version>22-ea+11</version>
        </dependency>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-fxml</artifactId>
            <version>22-ea+11</version>
        </dependency>
        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
            <version>20240303</version>
        </dependency>

        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-api</artifactId>
            <version>${junit.version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-engine</artifactId>
            <version>${junit.version}</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>9</source>
                    <target>9</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>3.6.0</version>
                <configuration>
                    <archive>
                            <manifest>
                                <mainClass>com.example.currencytranslator.Launcher</mainClass>
                            </manifest>
                    </archive>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>

    </build>
</project>

Carter•2y ago

I don't see anything wrong there. if you're up to sending the entire codebase I can look at it

Unknown User•2y ago

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lip•2y ago

https://github.com/limpeex/Currency-Conversion

GitHub

GitHub - limpeex/Currency-Conversion: An application where you can ...

An application where you can convert three different foreign exchange rates: TRY, USD and EUR. - limpeex/Currency-Conversion

lip•2y ago

It is this except pom is old

Unknown User•2y ago

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lip•2y ago

Intellij ide

Unknown User•2y ago

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lip•2y ago

yep with maven clean and package

Unknown User•2y ago

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lip•2y ago

That is the old one i didnt even use maven to compile it i just was up to run it via IDE

Unknown User•2y ago

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lip•2y ago

No i somehow was able to make it executable one time but i copy pasted it and dont remember when i did it i moslty used it for dependencies

Unknown User•2y ago

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lip•2y ago

i tried it

Unknown User•2y ago

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lip•2y ago

I think it is about javafx

Unknown User•2y ago

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lip•2y ago

yep no checked is shading still available on maven?

Unknown User•2y ago

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lip•2y ago

Unknown User•2y ago

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Carter•2y ago

I'm going to send a pull request

Unknown User•2y ago

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Carter•2y ago

I created a working fork

Unknown User•2y ago

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lip•2y ago

What is this i ddnt get this

Carter•2y ago

that's for creating an image it's like to create native images not jars

Unknown User•2y ago

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Carter•2y ago

but seriously, merge my fork and you good.

Unknown User•2y ago

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lip•2y ago

wdym

Unknown User•2y ago

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Carter•2y ago

add me to the project so I can create a pull request and you can merge it I configured it for you my username is Carter907

lip•2y ago

how do i do that

Carter•2y ago

Go to your repository's settings, then to "Manage Access", and click on "Invite teams or people". Enter their GitHub username or email address and send the invitation.

Go to your repository's settings, then to "Manage Access", and click on "Invite teams or people". Enter their GitHub username or email address and send the invitation.

lip•2y ago

i sent

Carter•2y ago

there I merged it for you now run mvn clean package and run the jar in the target folder I set it to jdk 18 if that's not what you're using. use something different but you have everything you need to create an execuable jar file now.

Unknown User•2y ago

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lip•2y ago

can you try to do it it still didnt work for me

Carter•2y ago

what did you do exactly?

lip•2y ago

opened the project and did clean and package and then java -jar <file> from ide terminal

Carter•2y ago

what is the error? make sure you actually pulled from the remote repository I updated the remote repository

Unknown User•2y ago

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lip•2y ago

It says unable to access jarfile nope

Unknown User•2y ago

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lip•2y ago

Unknown User•2y ago

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lip•2y ago

ah wait worked yep you solved it

Unknown User•2y ago

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lip•2y ago

wait lemme try it from cmd

Unknown User•2y ago

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lip•2y ago

yep i was in the wrong directory

Unknown User•2y ago

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lip•2y ago

but how am i going to open it up by double click

Unknown User•2y ago

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lip•2y ago

Unknown User•2y ago

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lip•2y ago

wdym newfile

Unknown User•2y ago

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lip•2y ago

yeah it works but how do i open it by double clicking

Unknown User•2y ago

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lip•2y ago

Okay thanks let me watch

JavaBotOP•2y ago

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lip•2y ago

@KyfStore @Kar.Jar

Unknown User•2y ago

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lip•2y ago

Thank you both for helping and your time

Unknown User•2y ago

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JavaBotOP•2y ago

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This post has been inactive for over 300 minutes, thus, it has been archived. If your question was not answered yet, feel free to re-open this post or create a new one. In case your post is not getting any attention, you can try to use /help ping. Warning: abusing this will result in moderative actions taken against you.

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Why cant i open a JAR?

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