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aCis Geodata Error


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Anyone know error reason?

 

Exception in thread "main" java.lang.NoSuchMethodError: java.nio.ByteBuffer.clear()Ljava/nio/ByteBuffer;
        at net.sf.l2j.gameserver.geoengine.geodata.BlockMultilayer.<init>(BlockMultilayer.java:89)
        at net.sf.l2j.gameserver.geoengine.GeoEngine.loadGeoBlocks(GeoEngine.java:279)
        at net.sf.l2j.gameserver.geoengine.GeoEngine.<init>(GeoEngine.java:92)
        at net.sf.l2j.gameserver.geoengine.GeoEngine$SingletonHolder.<clinit>(GeoEngine.java:1521)
        at net.sf.l2j.gameserver.geoengine.GeoEngine.getInstance(GeoEngine.java:1516)
        at net.sf.l2j.gameserver.GameServer.<init>(GameServer.java:215)
        at net.sf.l2j.gameserver.GameServer.main(GameServer.java:127)

 

Thank you for helping. 

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Posted (edited)
47 minutes ago, bras1las said:

Anyone know error reason?

 

Exception in thread "main" java.lang.NoSuchMethodError: java.nio.ByteBuffer.clear()Ljava/nio/ByteBuffer;
        at net.sf.l2j.gameserver.geoengine.geodata.BlockMultilayer.<init>(BlockMultilayer.java:89)
        at net.sf.l2j.gameserver.geoengine.GeoEngine.loadGeoBlocks(GeoEngine.java:279)
        at net.sf.l2j.gameserver.geoengine.GeoEngine.<init>(GeoEngine.java:92)
        at net.sf.l2j.gameserver.geoengine.GeoEngine$SingletonHolder.<clinit>(GeoEngine.java:1521)
        at net.sf.l2j.gameserver.geoengine.GeoEngine.getInstance(GeoEngine.java:1516)
        at net.sf.l2j.gameserver.GameServer.<init>(GameServer.java:215)
        at net.sf.l2j.gameserver.GameServer.main(GameServer.java:127)

 

Thank you for helping. 

Java 9 introduces overridden methods with covariant return types for the following methods in java.nio.ByteBuffer that are used by the driver:

  • position
  • limit
  • flip
  • clear

In Java 9 they all now return ByteBuffer, whereas the methods they override return Buffer,
resulting in exceptions like this when executing on Java 8 and lower:

java.lang.NoSuchMethodError: java.nio.ByteBuffer.limit(I)Ljava/nio/ByteBuffer

This is because the generated byte code includes the static return type of the method, which is not found on Java 8 and lower because the overloaded methods with covariant return types don't exist.

The solution is to cast ByteBuffer instances to Buffer before calling the method.

https://jira.mongodb.org/browse/JAVA-2559

Edited by Reynald0

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