diff --git a/dev-java/slf4j-jdk14/Manifest b/dev-java/slf4j-jdk14/Manifest
index b0afcf9..e9ef31c 100644
--- a/dev-java/slf4j-jdk14/Manifest
+++ b/dev-java/slf4j-jdk14/Manifest
@@ -1 +1 @@
-DIST slf4j-1.7.30.tar.gz 2272772 BLAKE2B c6692a20406983fa333bdb27bf8da599140d7d37fe55da6dfa2c2aff1825ee57c9d6b7bf0015e4b41b3c15ac0971559b3dd4bb5244e5393cd209ee26fac5e93d SHA512 4f05c996532560b16f22d78fcd47f8c4ba14691ce218a51ee6d50b283a51f8e40475a3a47f1117c1898a7be922e3f85806c4a7eb526759f0e7ea8426b5c6035f
+DIST slf4j-jdk14-1.7.30-sources.tar.gz 2272772 BLAKE2B c6692a20406983fa333bdb27bf8da599140d7d37fe55da6dfa2c2aff1825ee57c9d6b7bf0015e4b41b3c15ac0971559b3dd4bb5244e5393cd209ee26fac5e93d SHA512 4f05c996532560b16f22d78fcd47f8c4ba14691ce218a51ee6d50b283a51f8e40475a3a47f1117c1898a7be922e3f85806c4a7eb526759f0e7ea8426b5c6035f
diff --git a/dev-java/slf4j-jdk14/files/1.7.30-build.xml b/dev-java/slf4j-jdk14/files/1.7.30-build.xml
deleted file mode 100644
index 9eaf832..0000000
--- a/dev-java/slf4j-jdk14/files/1.7.30-build.xml
+++ /dev/null
@@ -1,223 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<project name="slf4j-jdk14-from-maven" default="package" basedir=".">
-
-  <!-- ====================================================================== -->
-  <!-- Build environment properties                                           -->
-  <!-- ====================================================================== -->
-
-  <property file="${user.home}/.m2/maven.properties"/>
-  <property file="maven-build.properties"/>
-
-  <property name="maven.build.finalName" value="slf4j-jdk14-1.7.30"/>
-  <property name="maven.build.dir" value="target"/>
-  <property name="maven.build.outputDir" value="${maven.build.dir}/classes"/>
-  <property name="maven.build.srcDir.0" value="src/main/java"/>
-  <property name="maven.build.resourceDir.0" value="src/main/resources"/>
-  <property name="maven.build.testOutputDir" value="${maven.build.dir}/test-classes"/>
-  <property name="maven.build.testDir.0" value="src/test/java"/>
-  <property name="maven.build.testResourceDir.0" value="src/test/resources"/>
-  <property name="maven.test.reports" value="${maven.build.dir}/test-reports"/>
-  <property name="maven.reporting.outputDirectory" value="${maven.build.dir}/site"/>
-
-  <property name="maven.repo.local" value="${user.home}/.m2/repository"/>
-  <property name="maven.settings.offline" value="false"/>
-  <property name="maven.settings.interactiveMode" value="true"/>
-
-  <!-- ====================================================================== -->
-  <!-- Defining classpaths                                                    -->
-  <!-- ====================================================================== -->
-
-  <path id="build.classpath">
-    <pathelement location="${maven.repo.local}/org/slf4j/slf4j-api/1.7.30/slf4j-api-1.7.30.jar"/>
-  </path>
-  <path id="build.test.classpath">
-    <pathelement location="${maven.repo.local}/org/slf4j/slf4j-api/1.7.30/slf4j-api-1.7.30.jar"/>
-    <pathelement location="${maven.repo.local}/org/slf4j/slf4j-api/1.7.30/slf4j-api-1.7.30-tests.jar"/>
-    <pathelement location="${maven.repo.local}/junit/junit/4.12/junit-4.12.jar"/>
-    <pathelement location="${maven.repo.local}/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar"/>
-  </path>
-
-  <!-- ====================================================================== -->
-  <!-- Cleaning up target                                                     -->
-  <!-- ====================================================================== -->
-
-  <target name="clean" description="Clean the output directory">
-    <delete dir="${maven.build.dir}"/>
-  </target>
-
-  <!-- ====================================================================== -->
-  <!-- Compilation target                                                     -->
-  <!-- ====================================================================== -->
-
-  <target name="compile" description="Compile the code">
-    <mkdir dir="${maven.build.outputDir}"/>
-    <javac destdir="${maven.build.outputDir}" 
-           nowarn="false" 
-           debug="true" 
-           optimize="false" 
-           deprecation="true" 
-           target="1.8" 
-           verbose="false" 
-           fork="false" 
-           source="1.8">
-      <src>
-        <pathelement location="${maven.build.srcDir.0}"/>
-      </src>
-      <classpath refid="build.classpath"/>
-    </javac>
-    <copy todir="${maven.build.outputDir}">
-      <fileset dir="${maven.build.resourceDir.0}"/>
-    </copy>
-  </target>
-
-  <!-- ====================================================================== -->
-  <!-- Test-compilation target                                                -->
-  <!-- ====================================================================== -->
-
-  <target name="compile-tests" 
-          depends="compile" 
-          description="Compile the test code" 
-          unless="maven.test.skip">
-    <mkdir dir="${maven.build.testOutputDir}"/>
-    <javac destdir="${maven.build.testOutputDir}" 
-           nowarn="false" 
-           debug="true" 
-           optimize="false" 
-           deprecation="true" 
-           target="1.8" 
-           verbose="false" 
-           fork="false" 
-           source="1.8">
-      <src>
-        <pathelement location="${maven.build.testDir.0}"/>
-      </src>
-      <classpath>
-        <path refid="build.test.classpath"/>
-        <pathelement location="${maven.build.outputDir}"/>
-      </classpath>
-    </javac>
-  </target>
-
-  <!-- ====================================================================== -->
-  <!-- Run all tests                                                          -->
-  <!-- ====================================================================== -->
-
-  <target name="test" 
-          depends="compile-tests, junit-missing" 
-          unless="junit.skipped" 
-          description="Run the test cases">
-    <mkdir dir="${maven.test.reports}"/>
-    <junit printSummary="yes" haltonerror="true" haltonfailure="true" fork="true" dir=".">
-      <sysproperty key="basedir" value="."/>
-      <formatter type="xml"/>
-      <formatter type="plain" usefile="false"/>
-      <classpath>
-        <path refid="build.test.classpath"/>
-        <pathelement location="${maven.build.outputDir}"/>
-        <pathelement location="${maven.build.testOutputDir}"/>
-      </classpath>
-      <batchtest todir="${maven.test.reports}" unless="test">
-        <fileset dir="${maven.build.testDir.0}">
-          <include name="**/Test*.java"/>
-          <include name="**/*Test.java"/>
-          <include name="**/*TestCase.java"/>
-          <exclude name="**/AllTest.java"/>
-          <exclude name="**/PackageTest.java"/>
-        </fileset>
-      </batchtest>
-      <batchtest todir="${maven.test.reports}" if="test">
-        <fileset dir="${maven.build.testDir.0}">
-          <include name="**/${test}.java"/>
-          <exclude name="**/AllTest.java"/>
-          <exclude name="**/PackageTest.java"/>
-        </fileset>
-      </batchtest>
-    </junit>
-  </target>
-
-  <target name="test-junit-present">
-    <available classname="junit.framework.Test" property="junit.present" classpathref="build.test.classpath"/>
-  </target>
-
-  <target name="test-junit-status" 
-          depends="test-junit-present">
-    <condition property="junit.missing">
-      <and>
-        <isfalse value="${junit.present}"/>
-        <isfalse value="${maven.test.skip}"/>
-      </and>
-    </condition>
-    <condition property="junit.skipped">
-      <or>
-        <isfalse value="${junit.present}"/>
-        <istrue value="${maven.test.skip}"/>
-      </or>
-    </condition>
-  </target>
-
-  <target name="junit-missing" 
-          depends="test-junit-status" 
-          if="junit.missing">
-    <echo>=================================== WARNING ===================================</echo>
-    <echo> JUnit is not present in the test classpath or your $ANT_HOME/lib directory. Tests not executed.</echo>
-    <echo>===============================================================================</echo>
-  </target>
-
-  <!-- ====================================================================== -->
-  <!-- Javadoc target                                                         -->
-  <!-- ====================================================================== -->
-
-  <target name="javadoc" description="Generates the Javadoc of the application">
-    <javadoc sourcepath="${maven.build.srcDir.0}" 
-             packagenames="*" 
-             destdir="${maven.reporting.outputDirectory}/apidocs" 
-             access="protected" 
-             old="false" 
-             verbose="false" 
-             version="true" 
-             use="true" 
-             author="true" 
-             splitindex="false" 
-             nodeprecated="false" 
-             nodeprecatedlist="false" 
-             notree="false" 
-             noindex="false" 
-             nohelp="false" 
-             nonavbar="false" 
-             serialwarn="false" 
-             charset="ISO-8859-1" 
-             linksource="false" 
-             breakiterator="false"/>
-  </target>
-
-  <!-- ====================================================================== -->
-  <!-- Package target                                                         -->
-  <!-- ====================================================================== -->
-
-  <target name="package" depends="compile,test" description="Package the application">
-    <jar jarfile="${maven.build.dir}/${maven.build.finalName}.jar" 
-         compress="true" 
-         index="false" 
-         manifest="${basedir}/target/classes/META-INF/MANIFEST.MF" 
-         basedir="${maven.build.outputDir}" 
-         excludes="**/package.html"/>
-  </target>
-
-  <!-- ====================================================================== -->
-  <!-- A dummy target for the package named after the type it creates         -->
-  <!-- ====================================================================== -->
-
-  <target name="jar" depends="package" description="Builds the jar for the application"/>
-
-  <!-- ====================================================================== -->
-  <!-- Download dependencies target                                           -->
-  <!-- ====================================================================== -->
-
-  <target name="test-offline">
-    <condition property="maven.mode.offline">
-      <equals arg1="${maven.settings.offline}" arg2="true"/>
-    </condition>
-  </target>
-
-</project>
diff --git a/dev-java/slf4j-jdk14/metadata.xml b/dev-java/slf4j-jdk14/metadata.xml
index 37998bf..801406c 100644
--- a/dev-java/slf4j-jdk14/metadata.xml
+++ b/dev-java/slf4j-jdk14/metadata.xml
@@ -1,8 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
 <pkgmetadata>
-  <maintainer type="project">
-    <email>java@gentoo.org</email>
-    <name>Java</name>
-  </maintainer>
+	<maintainer type="project">
+		<email>java@gentoo.org</email>
+		<name>Java</name>
+	</maintainer>
+	<upstream>
+		<doc>http://www.slf4j.org/docs.html</doc>
+		<bugs-to>http://www.slf4j.org/bug-reporting.html</bugs-to>
+	</upstream>
 </pkgmetadata>
diff --git a/dev-java/slf4j-jdk14/slf4j-jdk14-1.7.30.ebuild b/dev-java/slf4j-jdk14/slf4j-jdk14-1.7.30.ebuild
index f5996cd..d564734 100644
--- a/dev-java/slf4j-jdk14/slf4j-jdk14-1.7.30.ebuild
+++ b/dev-java/slf4j-jdk14/slf4j-jdk14-1.7.30.ebuild
@@ -1,41 +1,64 @@
-# Copyright 1999-2020 Gentoo Authors
+# Copyright 1999-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
+# Skeleton command:
+# java-ebuilder --generate-ebuild --workdir . --pom slf4j-v_1.7.30/slf4j-jdk14/pom.xml --download-uri https://github.com/qos-ch/slf4j/archive/refs/tags/v_1.7.30.tar.gz --slot 0 --keywords "~amd64 ~arm64 ~ppc64 ~x86" --ebuild slf4j-jdk14-1.7.30.ebuild
+
 EAPI=7
-JAVA_PKG_IUSE="doc source"
 
-inherit java-pkg-2 java-ant-2
+JAVA_PKG_IUSE="doc source test"
+MAVEN_ID="org.slf4j:slf4j-jdk14:1.7.30"
+JAVA_TESTING_FRAMEWORKS="junit-4"
 
-DESCRIPTION="Simple Logging Facade for Java"
-HOMEPAGE="http://www.slf4j.org/"
-SRC_URI="https://github.com/qos-ch/slf4j/archive/v_${PV}.tar.gz -> ${P/-jdk14/}.tar.gz"
+inherit java-pkg-2 java-pkg-simple
 
+DESCRIPTION="SLF4J JDK14 Binding"
+HOMEPAGE="http://www.slf4j.org"
+SRC_URI="https://github.com/qos-ch/slf4j/archive/refs/tags/v_${PV}.tar.gz -> ${P}-sources.tar.gz"
 LICENSE="MIT"
 SLOT="0"
-KEYWORDS="~amd64 ~ppc64 ~x86"
-IUSE=""
+KEYWORDS="~amd64 ~arm64 ~ppc64 ~x86"
 
-RDEPEND=">=virtual/jre-1.8
-	dev-java/slf4j-api:0"
-DEPEND=">=virtual/jdk-1.8
-	app-arch/unzip
-	dev-java/slf4j-api:0"
+# Common dependencies
+# POM: slf4j-v_${PV}/${PN}/pom.xml
+# org.slf4j:slf4j-api:1.7.30 -> >=dev-java/slf4j-api-1.7.30:0
 
-S="${WORKDIR}/${PN/-jdk14/}-v_${PV}/${PN}"
+CDEPEND="
+	>=dev-java/slf4j-api-1.7.30:0
+"
 
-RESTRICT="test"
+# Compile dependencies
+# POM: slf4j-v_${PV}/${PN}/pom.xml
+# test? junit:junit:4.12 -> >=dev-java/junit-4.12:4
+# test? org.slf4j:slf4j-api:1.7.30 -> >=dev-java/slf4j-api-1.7.30:0
 
-JAVA_ANT_REWRITE_CLASSPATH="yes"
-EANT_GENTOO_CLASSPATH="slf4j-api"
-EANT_EXTRA_ARGS="-Dmaven.build.finalName=${PN}"
+DEPEND="
+	>=virtual/jdk-1.8:*
+	${CDEPEND}
+	test? (
+		>=dev-java/slf4j-api-1.7.30:0
+	)
+"
+
+RDEPEND="
+	>=virtual/jre-1.8:*
+	${CDEPEND}"
+
+S="${WORKDIR}"
+
+JAVA_GENTOO_CLASSPATH="slf4j-api"
+JAVA_SRC_DIR="slf4j-v_${PV}/${PN}/src/main/java"
+JAVA_RESOURCE_DIRS=(
+	"slf4j-v_${PV}/${PN}/src/main/resources"
+)
+
+JAVA_TEST_GENTOO_CLASSPATH="junit-4,slf4j-api"
+JAVA_TEST_SRC_DIR="slf4j-v_${PV}/${PN}/src/test/java"
+JAVA_TEST_RESOURCE_DIRS=(
+	"slf4j-v_${PV}/${PN}/src/test/resources"
+)
 
 src_prepare() {
-	cp -v "${FILESDIR}"/${PV}-build.xml build.xml || die
-	java-pkg-2_src_prepare
-}
-
-src_install() {
-	java-pkg_dojar "${S}"/target/${PN}.jar
-	use doc && java-pkg_dojavadoc "${S}"/target/site/apidocs
-	use source && java-pkg_dosrc "${S}"/src/main/java/org
+	default
+	java-pkg_clean
 }