Extract static methods from Main

[signal-cli] / src / main / java / org / asamk / signal / GroupIdFormatException.java

diff --git a/src/main/java/org/asamk/signal/GroupIdFormatException.java b/src/main/java/org/asamk/signal/GroupIdFormatException.java
new file mode 100644 (file)
index 0000000..62add53
--- /dev/null
+++ b/src/main/java/org/asamk/signal/GroupIdFormatException.java
@@ -0,0 +1,10 @@
+package org.asamk.signal;
+
+import java.io.IOException;
+
+public class GroupIdFormatException extends Exception {
+
+    public GroupIdFormatException(String groupId, IOException e) {
+        super("Failed to decode groupId (must be base64) \"" + groupId + "\": " + e.getMessage());
+    }
+}