Trouble with -Xlint:all and maven

Question

I\'m trying to get maven to output lint level warnings. I\'ve created a small test program that should generate a warning about using a static method from a non-static context,

Answer 1

This "works for me" with your sources.

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.buck</groupId>
  <artifactId>mavenproject3</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>mavenproject3</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.0</version>
        <configuration>
          <source>1.6</source>
          <target>1.6</target>
          <compilerArgument>-Xlint:all</compilerArgument>
          <showWarnings>true</showWarnings>
          <showDeprecation>true</showDeprecation>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

I imagine that the reason your commented out attempt with

                <compilerArguments>
                    <Xlint:all />
                </compilerArguments>

is failing because of the XML namespace "Xlint" that the "all" tag would fall into, which means that the entire tag "Xlint:all" probably wasn't even seen by the maven configuration parser (being in a different namespace and all).

By the way, the relevant lines of output

Compiling 1 source file to C:\Users\edwbuck\Documents\NetBeansProjects\mavenproject3\target\classes
bootstrap class path not set in conjunction with -source 1.6
com/buck/mavenproject3/App.java:[12,35] static method should be qualified by type name, java.lang.String, instead of by an expression

and my environment

Apache Maven 3.0.4 (r1232337; 2012-01-17 02:44:56-0600)
Maven home: C:\Program Files\NetBeans 7.2.1\java\maven
Java version: 1.7.0_07, vendor: Oracle Corporation
Java home: C:\Program Files (x86)\Java\jdk1.7.0_07\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 7", version: "6.1", arch: "x86", family: "windows"

Perhaps you stepped on a platform specific bug?