tm1.addProvide("version", "1.5");
        tm1.addProvide("vendor", "sun");
        Xpp3Dom configuration1 = new Xpp3Dom("configuration");
        Xpp3Dom jdkHome1 = new Xpp3Dom("jdkHome");
        jdkHome1.setValue("${env.JAVA_HOME}");
        configuration1.addChild(jdkHome1);
        tm1.setConfiguration(configuration1);

        ToolchainModel tm2 = new ToolchainModel();
        tm1.setType("jdk");

 * @since 2.0.9, renamed from DefaultJavaToolChain in 3.2.4
 */
public class JavaToolchainImpl extends DefaultToolchain implements JavaToolchain {
    private String javaHome;

    public static final String KEY_JAVAHOME = "jdkHome"; // NOI18N

    JavaToolchainImpl(ToolchainModel model, Logger logger) {
        super(model, "jdk", logger);
    }

    public String getJavaHome() {
        return javaHome;
    }

                    systemPath = systemPath.replace('/', File.separatorChar).replace('\\', File.separatorChar);
                    String jdkHome = request.getSystemProperties().get("java.home") + File.separator + "..";
                    if (systemPath.startsWith(jdkHome)) {
                        msg += ". Please verify that you run Maven using a JDK and not just a JRE.";
                    }
                    addViolation(