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I’m getting an AbstractMethodError exception from a GIS library using HSQL. I’m guessing this is caused by a configuration issue on my machine, but I’m not sure if its related to the JRE, or some other system lib. Here is the error:
Exception in thread "main" java.lang.AbstractMethodError: org.hsqldb.jdbc.jdbcResultSet.isClosed()Z
Something was compiled against a version of JDBC which has the method
void isClosed()in theResultSetinterface, but the version of HSQLDB available at runtime does not have that method. The most likely explanation is just that you need to update the HSQLDB lib you’re using to run the app.This method was added to the
ResultSetinterface in Java 6 (i.e., JDBC 4.0) so an older HSQLDB driver would not have it.