Small utility to test Java truststore roots, easy to copy to a vm/container and run via "java -Djavax.ssl.trustStore... PKIX.java <URL>"

PKIX.java

import java.net.*;
import java.io.*;

public class PKIX {
    public static void main(String[] args) throws Exception {
        URL u = new URL(args[0]);
        URLConnection uc = u.openConnection();
        BufferedReader in = new BufferedReader(new InputStreamReader(uc.getInputStream()));
        String inputLine;
        while ((inputLine = in.readLine()) != null)
            System.out.println(inputLine);
        in.close();
    }
}