Main.java

package org.example;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;

public class Main {
    public static void main(String[] args) throws IOException {
        System.out.println("Parent process!");

        String path = "/Users/ievgiienko/Downloads/Child1/target/Child1-1.0-SNAPSHOT.jar";

        ProcessBuilder processBuilder = new ProcessBuilder();
        processBuilder.redirectErrorStream(true);
        processBuilder.inheritIO();
        processBuilder.directory(new File("/Users/ievgiienko/Downloads/Child1/target/"));
        processBuilder.command("java", "-jar",
                "-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5006",
                path);

        Process process = processBuilder.start();
        if (!process.isAlive()) {
            process.destroy();
            System.out.println("Error 1");
        } else {
            System.out.println("Success");

            BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream(), StandardCharsets.UTF_8));
            while (process.isAlive()) {
                String s = reader.readLine();
                if (s != null)
                    System.out.println(s);
            }
        }
    }
}