Bug#912240: gentlyweb-utils FTBFS with OpenJDK 11

[Adrian Bunk]

Source: gentlyweb-utils
Version: 1.5-1
Severity: serious
Tags: ftbfs buster sid

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/gentlyweb-utils.html

...
   jh_linkjars
   jh_build
find src -name *.java -and -type f -print0 | xargs -s 512000 -0 /usr/lib/jvm/default-java/bin/javac -g -cp /usr/share/java/jdom1.jar:debian/_jh_build.gentlyweb-utils -d debian/_jh_build.gentlyweb-utils -source 1.7 -target 1.7 -encoding ISO8859-1
warning: [options] bootstrap class path not set in conjunction with -source 7
src/utils/com/gentlyweb/utils/URLDataSource.java:22: error: package javax.activation does not exist
import javax.activation.DataSource;
                       ^
src/utils/com/gentlyweb/utils/URLDataSource.java:26: error: cannot find symbol
public class URLDataSource implements DataSource
                                      ^
  symbol: class DataSource
src/utils/com/gentlyweb/utils/HTMLDataSource.java:23: error: package javax.activation does not exist
import javax.activation.DataSource;
                       ^
src/utils/com/gentlyweb/utils/HTMLDataSource.java:25: error: cannot find symbol
public class HTMLDataSource implements DataSource
                                       ^
  symbol: class DataSource
src/utils/com/gentlyweb/utils/GZIPFileDataSource.java:29: error: package javax.activation does not exist
import javax.activation.DataSource;
                       ^
src/utils/com/gentlyweb/utils/GZIPFileDataSource.java:137: error: cannot find symbol
public class GZIPFileDataSource implements DataSource
                                           ^
  symbol: class DataSource
src/utils/com/gentlyweb/utils/Getter.java:384: warning: non-varargs call of varargs method with inexact argument type for last parameter;
			     null);
			     ^
  cast to Class for a varargs call
  cast to Class[] for a non-varargs call and to suppress this warning
src/utils/com/gentlyweb/utils/Getter.java:413: warning: non-varargs call of varargs method with inexact argument type for last parameter;
			     null);
			     ^
  cast to Class for a varargs call
  cast to Class[] for a non-varargs call and to suppress this warning
src/utils/com/gentlyweb/utils/Getter.java:432: warning: non-varargs call of varargs method with inexact argument type for last parameter;
				null);
				^
  cast to Class for a varargs call
  cast to Class[] for a non-varargs call and to suppress this warning
Note: src/utils/com/gentlyweb/utils/GeneralFilter.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
6 errors
4 warnings
make: *** [debian/rules:14: build] Error 123