Bug#912543: libnetx-java FTBFS with OpenJDK 11

[Adrian Bunk]

Source: libnetx-java
Version: 0.5-3
Severity: serious
Tags: ftbfs

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/libnetx-java.html

...
compile:
    [mkdir] Created dir: /build/1st/libnetx-java-0.5/classes
    [javac] /build/1st/libnetx-java-0.5/build.xml:20: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds
    [javac] Compiling 70 source files to /build/1st/libnetx-java-0.5/classes
    [javac] /build/1st/libnetx-java-0.5/src/netx/jnlp/runtime/JNLPClassLoader.java:633: warning: [dep-ann] deprecated item is not annotated with @Deprecated
    [javac]     public String getExtensionName() {
    [javac]                   ^
    [javac] /build/1st/libnetx-java-0.5/src/netx/jnlp/runtime/JNLPClassLoader.java:649: warning: [dep-ann] deprecated item is not annotated with @Deprecated
    [javac]     public String getExtensionHREF() {
    [javac]                   ^
    [javac] /build/1st/libnetx-java-0.5/src/netx/jnlp/runtime/JNLPSecurityManager.java:297: error: cannot find symbol
    [javac]         return super.checkTopLevelWindow(window);
    [javac]                     ^
    [javac]   symbol: method checkTopLevelWindow(Object)
    [javac] Note: Some input files use or override a deprecated API.
    [javac] Note: Recompile with -Xlint:deprecation for details.
    [javac] Note: Some input files use unchecked or unsafe operations.
    [javac] Note: Recompile with -Xlint:unchecked for details.
    [javac] 1 error
    [javac] 2 warnings