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via JDK Bug System by Webbug Group, 1 year ago
Illegal group reference
via javasystemsolutions.com by Unknown author, 2 years ago
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via Stack Overflow by lightheat
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java.lang.IllegalArgumentException: Illegal group reference	at java.util.regex.Matcher.appendReplacement(Matcher.java:857)	at java.util.regex.Matcher.replaceAll(Matcher.java:955)	at java.lang.String.replaceAll(String.java:2210)	at overlay.StartupTest.main(StartupTest.java:52)