A DESCRIPTION OF THE PROBLEM :
12:25:19 [junit] 12:25:19,375 INFO [MyTest] System property 'http.nonProxyHosts' = '*'

<snip>
12:25:49 [junit] Caused by: java.lang.StringIndexOutOfBoundsException: begin 1, end 0, length 1
12:25:49 [junit] at java.base/java.lang.String.checkBoundsBeginEnd(String.java:3319)
12:25:49 [junit] at java.base/java.lang.String.substring(String.java:1874)
12:25:49 [junit] at java.base/sun.net.spi.DefaultProxySelector.disjunctToRegex(DefaultProxySelector.java:399)
12:25:49 [junit] at java.base/sun.net.spi.DefaultProxySelector.toPattern(DefaultProxySelector.java:386)
12:25:49 [junit] at java.base/sun.net.spi.DefaultProxySelector$4.run(DefaultProxySelector.java:281)
12:25:49 [junit] at java.base/sun.net.spi.DefaultProxySelector$4.run(DefaultProxySelector.java:223)
12:25:49 [junit] at java.base/java.security.AccessController.doPrivileged(Native Method)
12:25:49 [junit] at java.base/sun.net.spi.DefaultProxySelector.select(DefaultProxySelector.java:222)


It looks like the fix http://mail.openjdk.java.net/pipermail/net-dev/2018-March/011223.html for https://bugs.java.com/bugdatabase/view_bug.do?bug_id=8144300 didn't consider the "*" case.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
javac Main.java && java Main

using code below

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@24a35978
ACTUAL -
java.lang.StringIndexOutOfBoundsException: begin 1, end 0, length 1
at java.base/java.lang.String.checkBoundsBeginEnd(String.java:3319)
at java.base/java.lang.String.substring(String.java:1874)
at java.base/sun.net.spi.DefaultProxySelector.disjunctToRegex(DefaultProxySelector.java:399)
at java.base/sun.net.spi.DefaultProxySelector.toPattern(DefaultProxySelector.java:386)
at java.base/sun.net.spi.DefaultProxySelector$4.run(DefaultProxySelector.java:281)
at java.base/sun.net.spi.DefaultProxySelector$4.run(DefaultProxySelector.java:223)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/sun.net.spi.DefaultProxySelector.select(DefaultProxySelector.java:222)
at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1181)
at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1081)
at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1587)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1515)
at java.base/java.net.URLConnection.getContent(URLConnection.java:749)
at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getContent(HttpsURLConnectionImpl.java:430)
at java.base/java.net.URL.getContent(URL.java:1154)
at Main.main(Main.java:11)


---------- BEGIN SOURCE ----------
import java.net.URL;
public class Main {

    public static void main(String[] args) {

        System.setProperty("https.proxyHost", "192.168.1.1");
        System.setProperty("http.proxyPort", "808");
        System.setProperty("http.nonProxyHosts", "*");
        try {
            URL url=new URL("https://google.com");
            System.out.println(url.getContent());
        } catch(Exception e) {
            e.printStackTrace();
        }
    }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
System.setProperty("http.nonProxyHosts", "**");

FREQUENCY : always