Java Application creation template

template_batch_app_class.java

package $APP_PACKAGE_NAME;
   
import java.io.IOException;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Arrays;
import java.util.List;
import java.util.Properties;
import java.util.ResourceBundle;
/**
 * Main class for Project $PROJECT_NAME
 *
 * @author ${AUTHOR_NAME} ${AUTHOR_EMAIL}
 * @since ${APP_VERSION}
 */
public class ${APP_NAME}{
    private ResourceBundle messages = ResourceBundle.getBundle("i18n/messages");
    private Properties config = new Properties();
  
    private static boolean exit = false;
    private static int debug = 0;
    private static String debugFilter = "";
    private static String loggerFilter = "ERR,WARN,INFO";
  
    public ${APP_NAME}(){
        info(${APP_NAME}.class, "Initialization application %s (%s) %n- running on JDK %s %n- at %s %n- with classpath = %s%n",
            messages.getString("app.title"),
            messages.getString("app.version"),
            System.getProperty("java.version"),
            System.getProperty("java.home"),
            System.getProperty("java.class.path"));
    }
    public void run(String[] args){
        init(args);
        loop();
        dispose();
    }
    private void init(String[] args){
        List<String> lArgs = Arrays.asList(args);
        try {
            config.load(this.getClass().getResourceAsStream("/config.properties"));
            config.forEach((k, v) -> {
                info($APP_NAME.class, "Configuration|%s=%s", k, v);
            });
            exit = Boolean.parseBoolean(config.getProperty("app.exit"));
        } catch (IOException e) {
            error(${APP_NAME}.class, "Configuration|Unable to read configuration file: %s", e.getMessage());
        }
        lArgs.forEach(s -> {
            info(${APP_NAME}.class, "Configuration;Argument: %s", s);
        }); 
    }
    private void loop(){
        while(!exit){
            // will loop until exit=true or CTRL+C
        }
    }
    private void dispose(){
        info(${APP_NAME}.class, "End of application %s (%s)",
            messages.getString("app.name"),
            messages.getString("app.version"));
    }
    public static void main(String[] argc){
        ${APP_NAME} app = new ${APP_NAME}();
        app.run(argc);
    }
    
    public static void log(Class<?> className, String level, String message, Object... args) {
        if (loggerFilter.contains(level)) {
            String dateFormatted = DateTimeFormatter.ISO_LOCAL_DATE_TIME.format(LocalDateTime.now());
            System.out.printf(dateFormatted + "|" + className.getName() + "|" + level + "|" + message + "%n", args);
        }
    }

    public static void debug(Class<?> className, String message, Object... args) {
        log(className, "DEBUG", message, args);
    }

    public static void debug(Class<?> className, int level, String message, Object... args) {
        if (level >= debug) {
            log(className, "DEBUG", message, args);
        }
    }

    public static void info(Class<?> className, String message, Object... args) {
        log(className, "INFO", message, args);
    }

    public static void warn(Class<?> className, String message, Object... args) {
        log(className, "WARN", message, args);
    }

    public static void error(Class<?> className, String message, Object... args) {
        log(className, "ERR", message, args);
    }
}

template_build.properties

# build v5.1
# Copyright 2025 Frederic Delorme (McGivrer) fredericDOTdelormeATgmailDOTcom

project.name=$APP_NAME
project.title=$PROJECT_NAME
project.version=$APP_VERSION
project.main.class=$APP_PACKAGE_NAME.$APP_NAME
project.javadoc.classpath=$APP_PACKAGE_NAME
project.javadoc.packages=--group "$APP_NAME" $APP_PACKAGE_NAME
project.author.name=$AUTHOR_NAME
project.author.email=$AUTHOR_EMAIL
project.build.jdk.version=$JAVA_VERSION
project.build.jars=

template_config.properties

app.name=$APP_NAME
app.vesion=$APP_VERSION

template_i18n_message.properties

app.title=$PROJECT_NAME-($APP_VERSION)