4.0.0 net.sourceforge.pmd pmd 5.4.4-SNAPSHOT pom PMD org.sonatype.oss oss-parent 7 PMD scans Java source code and looks for potential problems like:

Possible bugs - empty try/catch/finally/switch statements
Dead code - unused local variables, parameters and private methods
Suboptimal code - wasteful String/StringBuffer usage
Overcomplicated expressions - unnecessary if statements, for loops that could be while loops
Duplicate code - copied/pasted code means copied/pasted bugs

You can download everything from here, and you can get an overview of all the rules at the rulesets index page.

PMD is integrated with JDeveloper, Eclipse, JEdit, JBuilder, BlueJ, CodeGuide, NetBeans/Sun Java Studio Enterprise/Creator, IntelliJ IDEA, TextPad, Maven, Ant, Gel, JCreator, and Emacs.

]]> https://pmd.github.io/ https://travis-ci.org/pmd/pmd 2002 BSD-style http://pmd.sourceforge.net/license.html repo PMD development https://lists.sourceforge.net/lists/listinfo/pmd-devel https://lists.sourceforge.net/lists/listinfo/pmd-devel https://sourceforge.net/p/pmd/mailman/pmd-devel PMD commits https://lists.sourceforge.net/lists/listinfo/pmd-commits https://lists.sourceforge.net/lists/listinfo/pmd-commits https://sourceforge.net/p/pmd/mailman/pmd-commits tomcopeland Tom Copeland tom@infoether.com InfoEther Developer dpeugh David Dixon-Peugh ddp@apache.org Lockheed Martin Corporation Developer olemartin Ole-Martin Mork olemartin@users.sourceforge.net Bekk Consulting Developer mikkey Miguel Griffa mikkey@users.sourceforge.net Developer phherlin Philippe Herlin phherlin@users.sourceforge.net Developer jigerjava Jiger Patel jigerjava@users.sourceforge.net Developer kubacki Radim Kubacki kubacki@users.sourceforge.net Developer tomslot Tomasz Slota tomslot@users.sourceforge.net Developer ezust Alan Ezust ezust@users.sourceforge.net Developer nascif Nascif Abousalh Neto nascif@users.sourceforge.net Developer allancaplan Allan Caplan allancaplan@users.sourceforge.net Developer holobender Sven Jacob holobender@users.sourceforge.net Developer wfzelle Wouter Zelle wfzelle@users.sourceforge.net Developer hooperbloob Brian Remedios hooperbloob@users.sourceforge.net Developer xlv Xavier Le Vourch xlv@users.sourceforge.net Developer rgustav Ryan Gustafson rgustav@users.sourceforge.net Developer bluejohn Johan Nagels bluejohn@users.sourceforge.net Developer tkleiber Torsten Kleiber http://develishdevelopment.wordpress.com tkleiber@users.sourceforge.net Developer rpelisse Romain Pelisse rpelisse@users.sourceforge.net http://belaran.eu/ Atos Origin https://osc-service.si.fr.atosorigin.com/ Developer +1 http://belaran.eu/wordpress/wp-content/uploads/2008/05/RomainPELISSE.jpg adangel Andreas Dangel adangel@users.sourceforge.net Developer +1 acanda Philip Graf acanda@users.sourceforge.net Developer juansotuyo Juan Martín Sotuyo Dodero jmsotuyo@monits.com Developer -3 scm:git:git://github.com/pmd/pmd.git scm:git:ssh://git@github.com/pmd/pmd.git https://github.com/pmd/pmd HEAD local file:///tmp/pmd-site PMD https://pmd.github.io/ https://github.com/pmd/pmd/issues 5.0 2.18.1 2.16 3.5 1.7 0.7.5.201505241946 1.9.6 2.10.3 4.5.2-1 UTF-8 http://pmd.sourceforge.net/snapshot/${project.artifactId} -Xmx512m -Dfile.encoding=${project.build.sourceEncoding} ${basedir}/pmd-core ${config.basedir}/src/main/resources/rulesets/internal/dogfood.xml ${config.basedir}/etc/checkstyle-config.xml ${config.basedir}/etc/checkstyle-suppressions.xml org.apache.maven.wagon wagon-ssh 2.10 org.antlr antlr4-maven-plugin ${antlr.version} ${project.build.sourceEncoding} antlr antlr4 org.apache.maven.plugins maven-antrun-plugin 1.8 org.apache.maven.plugins maven-assembly-plugin 2.5.5 org.apache.maven.plugins maven-dependency-plugin 2.10 org.apache.maven.plugins maven-release-plugin 2.5.2 pmd-release false true true pmd_releases/@{project.version} deploy org.apache.maven.plugins maven-clean-plugin 2.6.1 org.apache.maven.plugins maven-compiler-plugin 3.3 ${java.version} ${java.version} org.apache.maven.plugins maven-deploy-plugin 2.8.2 org.apache.maven.plugins maven-install-plugin 2.5.2 org.apache.maven.plugins maven-jar-plugin 2.6 org.apache.maven.plugins maven-resources-plugin 2.7 org.apache.maven.plugins maven-site-plugin 3.4 org.apache.maven.doxia doxia-module-markdown 1.6 org.apache.maven.plugins maven-surefire-plugin ${surefire.version} once alphabetical org.apache.maven.plugins maven-toolchains-plugin 1.1 toolchain ${java.version} org.codehaus.mojo build-helper-maven-plugin 1.9.1 net.sourceforge.pmd pmd-build 0.10 pmd-pre-site org.apache.maven.plugins maven-source-plugin 2.4 org.apache.maven.plugins maven-javadoc-plugin ${javadoc.plugin.version} org.apache.maven.plugins maven-checkstyle-plugin ${checkstyle.version} org.apache.maven.plugins maven-enforcer-plugin 1.4.1 org.apache.maven.plugins maven-pmd-plugin ${pmd.plugin.version} org.eclipse.m2e lifecycle-mapping 1.0.0 org.apache.maven.plugins maven-antrun-plugin [1.7,) run false true org.apache.maven.plugins maven-site-plugin false attach-site-descriptor attach-descriptor org.apache.maven.plugins maven-antrun-plugin true pmd-clean clean PMD specific tasks: cleaning generated xdocs run org.jacoco jacoco-maven-plugin ${jacoco.version} default-prepare-agent prepare-agent org.apache.maven.plugins maven-pmd-plugin verify pmd cpd 100 ${java.version} ${pmd.dogfood.ruleset} target/generated-sources/javacc org.apache.maven.plugins maven-checkstyle-plugin verify checkstyle ${checkstyle.configLocation} ${checkstyle.suppressionsFile} org.apache.maven.plugins maven-toolchains-plugin org.apache.maven.plugins maven-jxr-plugin 2.5 org.apache.maven.plugins maven-javadoc-plugin ${javadoc.plugin.version} -Xdoclint:none javadoc test-javadoc aggregate test-aggregate org.apache.maven.plugins maven-pmd-plugin ${pmd.plugin.version} true 100 ${java.version} ${pmd.dogfood.ruleset} target/generated-sources/javacc org.apache.maven.plugins maven-checkstyle-plugin ${checkstyle.version} ${checkstyle.configLocation} ${checkstyle.suppressionsFile} checkstyle org.apache.maven.plugins maven-project-info-reports-plugin 2.8.1 summary dependencies dependency-convergence dependency-info dependency-management modules plugin-management plugins project-team mailing-list cim issue-tracking license scm org.apache.maven.plugins maven-surefire-report-plugin ${surefire.version} org.jacoco jacoco-maven-plugin ${jacoco.version} org.codehaus.mojo versions-maven-plugin 2.2 dependency-updates-report plugin-updates-report property-updates-report org.antlr antlr4-runtime ${antlr.version} org.apache.ant ant ${ant.version} org.apache.ant ant-testutil ${ant.version} jaxen jaxen 1.1.6 xercesImpl xerces xalan xalan icu4j com.ibm.icu com.beust jcommander 1.48 org.ow2.asm asm 5.0.4 net.sourceforge.pmd pmd-core ${project.version} net.sourceforge.pmd pmd-test ${project.version} net.sourceforge.saxon saxon 9.1.0.8 net.sourceforge.saxon saxon 9.1.0.8 dom org.mozilla rhino 1.7.7 junit junit 4.12 net.java.dev.javacc javacc ${javacc.version} commons-io commons-io 2.4 org.mockito mockito-all 1.10.19 org.apache.commons commons-lang3 3.4 org.slf4j slf4j-api 1.7.12 com.github.tomakehurst wiremock 1.57 com.github.stefanbirkner system-rules 1.8.0 sonatype-nexus-snapshots Sonatype Nexus Snapshots https://oss.sonatype.org/content/repositories/snapshots false true central Central Repository https://repo.maven.apache.org/maven2 false central Central Repository https://repo.maven.apache.org/maven2 never false sonatype-nexus-plugin-snapshots Sonatype Nexus Snapshots https://oss.sonatype.org/content/repositories/snapshots false true pmd-release https://pmd.github.io/pmd-${project.version}/${project.artifactId} sf-release pmd-repo Default Repository scp://shell.sourceforge.net/home/project-web/pmd/htdocs/maven2 pmd-site Default Site scp://shell.sourceforge.net/home/project-web/pmd/htdocs/pmd-${project.version} https://pmd.github.io/pmd-${project.version}/${project.artifactId} true org.apache.maven.plugins maven-source-plugin attach-sources jar true org.apache.maven.plugins maven-javadoc-plugin attach-javadocs jar true org.apache.maven.plugins maven-deploy-plugin true sf-snapshot pmd-snapshot-repo Snapshot Repository scp://shell.sourceforge.net/home/project-web/pmd/htdocs/snapshot/maven2 true pmd-snapshot-site Default Site scp://shell.sourceforge.net/home/project-web/pmd/htdocs/snapshot jdk8-modules 1.8 pmd-java8 pmd-ui jdk9-disabled !1.9 pmd-scala travis env.TRAVIS true maven-toolchains-plugin none site 1.8 pmd-core pmd-cpp pmd-cs pmd-dist pmd-fortran pmd-go pmd-java pmd-javascript pmd-jsp pmd-matlab pmd-objectivec pmd-php pmd-plsql pmd-python pmd-ruby pmd-swift pmd-test pmd-vm pmd-xml