javac.compilerargs=-Xlint:deprecation -Xlint:unchecked

examples/nbproject/project.properties

@@ -52,15 +52,15 @@ javac.classpath=\
     ${file.reference.open-dis_4.16.jar}:\
     ${file.reference.dis-enums-1.3.jar}
 # Space-separated list of extra javac options
-javac.compilerargs=
+javac.compilerargs=-Xlint:deprecation -Xlint:unchecked
 javac.deprecation=false
 javac.external.vm=true
 javac.modulepath=
 javac.processormodulepath=
 javac.processorpath=\
     ${javac.classpath}
-javac.source=1.8
-javac.target=1.8
+javac.source=16
+javac.target=16
 javac.test.classpath=\
     ${javac.classpath}:\
     ${build.classes.dir}