What do I need to compile this lanterna maven project from terminal?

Question

I'm following a simple lanterna demo tutorial using maven. The problem is that the program runs perfectly using IDE intellij, but wont compile from terminal. Do I need to include something more in my pom.xml file?

My file Rouge.java opens a simple window with hello world. Error message when trying to compile file from terminal (javac Rouge.java) includes error: package com.googlecode.lanterna.terminal does not exist.

I thought the problem could be that the packages does not compile and tried to add different maven compiler dependencies but the problem remains.

import com.googlecode.lanterna.graphics.TextGraphics;
import com.googlecode.lanterna.screen.Screen;
import com.googlecode.lanterna.screen.TerminalScreen;
import com.googlecode.lanterna.terminal.DefaultTerminalFactory;
import com.googlecode.lanterna.terminal.Terminal;

import java.io.IOException;

public class Rogue {


    public static void main(String[] args) throws IOException {
        Terminal terminal = new DefaultTerminalFactory().createTerminal();
        Screen screen = new TerminalScreen(terminal);

        TextGraphics tg = screen.newTextGraphics();
        screen.startScreen();

        //write a text
        tg.putString(10, 10, "Hello World!");
        screen.refresh();

    }


}


<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>fwiman</groupId>
    <artifactId>lanternademo</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>com.googlecode.lanterna</groupId>
            <artifactId>lanterna</artifactId>
            <version>3.0.1</version>
        </dependency>
    </dependencies>

    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>





</project>

I want to be able to run the program from terminal

I guess you need to produce a fat jar file including all the dependences. — Nikolas Charalambidis, May 07 '19 at 10:30
Possible duplicate of [Building a runnable jar with Maven 2](https://stackoverflow.com/questions/2022032/building-a-runnable-jar-with-maven-2) — Robert, May 07 '19 at 10:56

score 0 · Accepted Answer · answered May 07 '19 at 12:43

When you run javac/java command on Rogue.java it tries to look for lanterna-3.0.1.jar dependency which is not be available or neither set in the classpath. With the current pom.xml you shared you will still get java.lang.ClassNotFoundException: com.googlecode.lanterna when you execute(mvn install) it on the .jar file. There are couple of options you could look:

you can define maven-assembly-plugin to your build tag in pom.xml. This will create a fat jar which includes all the dependencies
if you are in windows you can create .bat script and include your necessary dependency and run the java command. Something like below

TITLE lanterna demo set classpath=.\lib\* java com.demo.Rogue

What do I need to compile this lanterna maven project from terminal?

1 Answers1