update findbugs gradle task

README.md

@@ -50,7 +50,7 @@ Type at the root of the PDDL4J distribution:
 > ./gradlew build
 
 if you want to build the project with findbug:
-> ./gradlew build -Pfindbug
+> ./gradlew build -Pfindbugs
 
 The jar "pddl4j-VERSION.jar" is available in the build/libs directory.
 

build.gradle

@@ -72,16 +72,17 @@ clean.doLast() {
     cleanGenerated.execute()
 }
 
+findbugsMain.onlyIf() { project.hasProperty('findbugs') }
+findbugsTest.onlyIf() { project.hasProperty('findbugs') }
+
 findbugsMain.doLast() {
     println("Find bug process completed without finding an issue")
 }
 
-findbugsMain.onlyIf() { project.hasProperty('findbug') }
-findbugsTest.onlyIf() { project.hasProperty('findbug') }
-
 findbugs {
     effort= "max"
     reportLevel = "low"
+    excludeFilter = file("$rootProject.projectDir/config/findbugs/excludeFilter.xml")
 }
 
 javadoc.doFirst() {

config/findbugs/excludeFilter.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<FindBugsFilter>
+	<Match>
+		<Class name="~fr.uga.pddl4j.parser.lexer\.[^.]+"/>
+	</Match>
+	<Match>
+		<Class name="fr.uga.pddl4j.util.MemoryAgent" />
+		<Method name="isSharedFlyweight" />
+	</Match>
+</FindBugsFilter>