Test.java 4 t1 unused declaration Method is never used. Test.java 5 t2 unused declaration Method is never used. Test.java 6 t3 unused declaration Method is never used. Test.java 7 t4 unused declaration Method is never used. Test.java 10 t5 unused declaration Method is never used. Test.java 11 t6 unused declaration Method is never used. Test.java 3 Demo unused declaration Class is never used.