I guess when I rebuilt the test jar the order of the classes changed, 1->100 not 1->2, which made the class inheritance order inconsistent

src/main/java/net/runelite/deob/ClassGroup.java

@@ -3,6 +3,7 @@ package net.runelite.deob;
 import java.io.DataInputStream;
 import java.io.IOException;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import net.runelite.deob.attributes.Code;
 
@@ -47,9 +48,32 @@ public class ClassGroup
 	
 	public void initialize()
 	{
+		sort();
 		buildClassGraph();
 		lookup();
 	}
+	
+	private int classNum(ClassFile cf)
+	{
+		if (cf.getName().startsWith("class"))
+			return Integer.parseInt(cf.getName().substring(5));
+		
+		return -1;
+	}
+	
+	// order of classes affects class graph (eg order of children classes) which affects comparing two classgroups
+	private void sort()
+	{
+		// only sort renamed jars
+		for (ClassFile c : classes)
+			if (c.getName().startsWith("class") == false && !c.getName().equals("client"))
+				return;
+		
+		Collections.sort(classes, (c1, c2) -> {
+			int n1 = classNum(c1), n2 = classNum(c2);
+			return Integer.compare(n1, n2);
+		});
+	}
 
 	public void buildClassGraph()
 	{