From a4ba663e06c4306879027a7eb9ce951729977fce Mon Sep 17 00:00:00 2001
From: Vladimir Krivosheev <vladimir.krivosheev@jetbrains.com>
Date: Wed, 17 Dec 2014 11:45:17 +0100
Subject: [PATCH] cleanup

---
 .../CommonJavaRunConfigurationParameters.java |  1 +
 .../application/ApplicationConfiguration.java |  1 +
 .../jar/JarApplicationConfiguration.java      |  1 +
 .../execution/ui/AlternativeJREPanel.java     |  8 +++++---
 .../execution/util/JavaParametersUtil.java    | 19 +++++++++---------
 .../execution/util/JreVersionDetector.java    | 16 +++++++--------
 .../intellij/execution/JavaExecutionUtil.java | 20 +++++++++----------
 .../LocatableConfigurationBase.java           | 17 +++++++++-------
 .../ModuleBasedConfiguration.java             |  2 +-
 .../configurations/RunConfigurationBase.java  | 11 ++++++----
 .../RunConfigurationModule.java               |  2 +-
 .../execution/ExternalizablePath.java         | 14 +++++--------
 .../intellij/execution/ProgramRunnerUtil.java | 10 ++++++----
 .../JavaCoverageEnabledConfiguration.java     |  8 ++++----
 .../groovy/mvc/MvcRunConfiguration.java       |  1 +
 .../runner/GroovyScriptRunConfiguration.java  |  1 +
 .../configuration/TestNGConfiguration.java    |  1 +
 17 files changed, 71 insertions(+), 62 deletions(-)

diff --git a/java/execution/impl/src/com/intellij/execution/CommonJavaRunConfigurationParameters.java b/java/execution/impl/src/com/intellij/execution/CommonJavaRunConfigurationParameters.java
index 46333b9668bf..35fe0eec7733 100644
--- a/java/execution/impl/src/com/intellij/execution/CommonJavaRunConfigurationParameters.java
+++ b/java/execution/impl/src/com/intellij/execution/CommonJavaRunConfigurationParameters.java
@@ -26,6 +26,7 @@ public interface CommonJavaRunConfigurationParameters extends CommonProgramRunCo
 
   void setAlternativeJrePathEnabled(boolean enabled);
 
+  @Nullable
   String getAlternativeJrePath();
 
   void setAlternativeJrePath(String path);
diff --git a/java/execution/impl/src/com/intellij/execution/application/ApplicationConfiguration.java b/java/execution/impl/src/com/intellij/execution/application/ApplicationConfiguration.java
index de8bcbb84ae6..7acf0578ab4c 100644
--- a/java/execution/impl/src/com/intellij/execution/application/ApplicationConfiguration.java
+++ b/java/execution/impl/src/com/intellij/execution/application/ApplicationConfiguration.java
@@ -214,6 +214,7 @@ public class ApplicationConfiguration extends ModuleBasedConfiguration<JavaRunCo
      ALTERNATIVE_JRE_PATH_ENABLED = enabled;
    }
 
+   @Nullable
    @Override
    public String getAlternativeJrePath() {
      return ALTERNATIVE_JRE_PATH;
diff --git a/java/execution/impl/src/com/intellij/execution/jar/JarApplicationConfiguration.java b/java/execution/impl/src/com/intellij/execution/jar/JarApplicationConfiguration.java
index c76b5873389a..7e5434a44bbb 100644
--- a/java/execution/impl/src/com/intellij/execution/jar/JarApplicationConfiguration.java
+++ b/java/execution/impl/src/com/intellij/execution/jar/JarApplicationConfiguration.java
@@ -145,6 +145,7 @@ public class JarApplicationConfiguration extends LocatableConfigurationBase impl
     myBean.ALTERNATIVE_JRE_PATH_ENABLED = enabled;
   }
 
+  @Nullable
   @Override
   public String getAlternativeJrePath() {
     return myBean.ALTERNATIVE_JRE_PATH;
diff --git a/java/execution/impl/src/com/intellij/execution/ui/AlternativeJREPanel.java b/java/execution/impl/src/com/intellij/execution/ui/AlternativeJREPanel.java
index 9891d983c328..d4f4534f2b85 100644
--- a/java/execution/impl/src/com/intellij/execution/ui/AlternativeJREPanel.java
+++ b/java/execution/impl/src/com/intellij/execution/ui/AlternativeJREPanel.java
@@ -29,7 +29,9 @@ import com.intellij.ui.InsertPathAction;
 import com.intellij.ui.PanelWithAnchor;
 import com.intellij.ui.TextFieldWithHistory;
 import com.intellij.ui.components.JBCheckBox;
+import com.intellij.util.PathUtil;
 import net.miginfocom.swing.MigLayout;
+import org.jetbrains.annotations.Nullable;
 
 import javax.swing.*;
 import java.awt.event.ActionEvent;
@@ -115,8 +117,8 @@ public class AlternativeJREPanel extends JPanel implements PanelWithAnchor {
     return FileUtil.toSystemIndependentName(myPathField.getChildComponent().getText().trim());
   }
 
-  private void setPath(final String path) {
-    myPathField.getChildComponent().setText(FileUtil.toSystemDependentName(path == null ? "" : path));
+  private void setPath(@Nullable String path) {
+    myPathField.getChildComponent().setText(StringUtil.notNullize(PathUtil.toSystemDependentName(path)));
   }
 
   public boolean isPathEnabled() {
@@ -128,7 +130,7 @@ public class AlternativeJREPanel extends JPanel implements PanelWithAnchor {
     enabledChanged();
   }
 
-  public void init(String path, boolean isEnabled){
+  public void init(@Nullable String path, boolean isEnabled){
     setPathEnabled(isEnabled);
     setPath(path);
   }
diff --git a/java/execution/impl/src/com/intellij/execution/util/JavaParametersUtil.java b/java/execution/impl/src/com/intellij/execution/util/JavaParametersUtil.java
index c13f76791f65..bec77294cebb 100644
--- a/java/execution/impl/src/com/intellij/execution/util/JavaParametersUtil.java
+++ b/java/execution/impl/src/com/intellij/execution/util/JavaParametersUtil.java
@@ -36,6 +36,8 @@ import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.psi.PsiClass;
 import com.intellij.psi.PsiFile;
 import org.intellij.lang.annotations.MagicConstant;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.io.File;
 import java.util.List;
@@ -96,7 +98,7 @@ public class JavaParametersUtil {
   public static void configureModule(final RunConfigurationModule runConfigurationModule,
                                      final JavaParameters parameters,
                                      @MagicConstant(valuesFromClass = JavaParameters.class) final int classPathType,
-                                     final String jreHome) throws CantRunException {
+                                     @Nullable String jreHome) throws CantRunException {
     Module module = runConfigurationModule.getModule();
     if (module == null) {
       throw CantRunException.noModuleConfigured(runConfigurationModule.getModuleName());
@@ -104,20 +106,20 @@ public class JavaParametersUtil {
     configureModule(module, parameters, classPathType, jreHome);
   }
 
-  public static void configureModule(Module module, JavaParameters parameters, @MagicConstant(valuesFromClass = JavaParameters.class) int classPathType, String jreHome) throws CantRunException {
+  public static void configureModule(Module module, JavaParameters parameters, @MagicConstant(valuesFromClass = JavaParameters.class) int classPathType, @Nullable String jreHome) throws CantRunException {
     parameters.configureByModule(module, classPathType, createModuleJdk(module, jreHome));
   }
 
-  public static void configureProject(Project project, final JavaParameters parameters, @MagicConstant(valuesFromClass = JavaParameters.class) final int classPathType, final String jreHome)
+  public static void configureProject(Project project, final JavaParameters parameters, @MagicConstant(valuesFromClass = JavaParameters.class) final int classPathType, @Nullable String jreHome)
     throws CantRunException {
     parameters.configureByProject(project, classPathType, createProjectJdk(project, jreHome));
   }
 
-  private static Sdk createModuleJdk(final Module module, final String jreHome) throws CantRunException {
+  private static Sdk createModuleJdk(final Module module, @Nullable String jreHome) throws CantRunException {
     return jreHome == null ? JavaParameters.getModuleJdk(module) : createAlternativeJdk(jreHome);
   }
 
-  public static Sdk createProjectJdk(final Project project, final String jreHome) throws CantRunException {
+  public static Sdk createProjectJdk(final Project project, @Nullable String jreHome) throws CantRunException {
     return jreHome == null ? createProjectJdk(project) : createAlternativeJdk(jreHome);
   }
 
@@ -129,7 +131,7 @@ public class JavaParametersUtil {
     return jdk;
   }
 
-  private static Sdk createAlternativeJdk(final String jreHome) throws CantRunException {
+  private static Sdk createAlternativeJdk(@NotNull String jreHome) throws CantRunException {
     final Sdk configuredJdk = ProjectJdkTable.getInstance().findJdk(jreHome);
     if (configuredJdk != null) {
       return configuredJdk;
@@ -145,9 +147,8 @@ public class JavaParametersUtil {
 
   public static void checkAlternativeJRE(CommonJavaRunConfigurationParameters configuration) throws RuntimeConfigurationWarning {
     if (configuration.isAlternativeJrePathEnabled()) {
-      final String alternativeJrePath = configuration.getAlternativeJrePath();
-      if (alternativeJrePath == null ||
-          alternativeJrePath.length() == 0 ||
+      String alternativeJrePath = configuration.getAlternativeJrePath();
+      if (StringUtil.isEmpty(alternativeJrePath) ||
           ProjectJdkTable.getInstance().findJdk(alternativeJrePath) == null && !JavaSdk.checkForJre(alternativeJrePath)) {
         throw new RuntimeConfigurationWarning(
           ExecutionBundle.message("jre.path.is.not.valid.jre.home.error.mesage", alternativeJrePath));
diff --git a/java/execution/impl/src/com/intellij/execution/util/JreVersionDetector.java b/java/execution/impl/src/com/intellij/execution/util/JreVersionDetector.java
index d6ff9723653d..125aa50201cf 100644
--- a/java/execution/impl/src/com/intellij/execution/util/JreVersionDetector.java
+++ b/java/execution/impl/src/com/intellij/execution/util/JreVersionDetector.java
@@ -30,28 +30,26 @@ import com.intellij.openapi.projectRoots.JavaSdkVersion;
 import com.intellij.openapi.projectRoots.Sdk;
 import com.intellij.openapi.roots.ModuleRootManager;
 import com.intellij.openapi.roots.ProjectRootManager;
+import com.intellij.openapi.util.Comparing;
 import org.jetbrains.annotations.Nullable;
 
 public class JreVersionDetector {
-  private String myLastAlternativeJrePath = null; //awful hack
+  private String myLastAlternativeJrePath ; //awful hack
   private boolean myLastIsJre50;
 
-
   public boolean isModuleJre50Configured(final ModuleBasedConfiguration configuration) {
     final Module module = configuration.getConfigurationModule().getModule();
     if (module != null && !module.isDisposed()) {
-      final ModuleRootManager rootManager = ModuleRootManager.getInstance(module);
-      final Sdk jdk = rootManager.getSdk();
-      return isJre50(jdk);
+      return isJre50(ModuleRootManager.getInstance(module).getSdk());
     }
-
-    final Sdk projectJdk = ProjectRootManager.getInstance(configuration.getProject()).getProjectSdk();
-    return isJre50(projectJdk);
+    return isJre50(ProjectRootManager.getInstance(configuration.getProject()).getProjectSdk());
   }
 
   public boolean isJre50Configured(final CommonJavaRunConfigurationParameters configuration) {
     if (configuration.isAlternativeJrePathEnabled()) {
-      if (configuration.getAlternativeJrePath().equals(myLastAlternativeJrePath)) return myLastIsJre50;
+      if (Comparing.equal(configuration.getAlternativeJrePath(), myLastAlternativeJrePath)) {
+        return myLastIsJre50;
+      }
       myLastAlternativeJrePath = configuration.getAlternativeJrePath();
       final String versionString = JavaSdk.getJdkVersion(myLastAlternativeJrePath);
       myLastIsJre50 = versionString != null && isJre50(versionString);
diff --git a/java/execution/openapi/src/com/intellij/execution/JavaExecutionUtil.java b/java/execution/openapi/src/com/intellij/execution/JavaExecutionUtil.java
index 4c59e267b209..42ed3830364a 100644
--- a/java/execution/openapi/src/com/intellij/execution/JavaExecutionUtil.java
+++ b/java/execution/openapi/src/com/intellij/execution/JavaExecutionUtil.java
@@ -22,7 +22,6 @@ import com.intellij.execution.filters.TextConsoleBuilder;
 import com.intellij.execution.filters.TextConsoleBuilderFactory;
 import com.intellij.execution.runners.ExecutionEnvironment;
 import com.intellij.execution.runners.ExecutionEnvironmentBuilder;
-import com.intellij.execution.runners.ExecutionUtil;
 import com.intellij.execution.util.ExecutionErrorDialog;
 import com.intellij.openapi.actionSystem.DataContext;
 import com.intellij.openapi.module.Module;
@@ -140,7 +139,7 @@ public class JavaExecutionUtil {
   }
 
   @Nullable
-  public static String getPresentableClassName(final String rtClassName) {
+  public static String getPresentableClassName(@Nullable String rtClassName) {
     return getPresentableClassName(rtClassName, null);
   }
 
@@ -149,13 +148,13 @@ public class JavaExecutionUtil {
    */
   @Deprecated
   @Nullable
-  public static String getPresentableClassName(final String rtClassName, final JavaRunConfigurationModule configurationModule) {
-    if (StringUtil.isEmpty(rtClassName)) return null;
-    final int lastDot = rtClassName.lastIndexOf('.');
-    if (lastDot == -1 || lastDot == rtClassName.length() - 1) {
-      return rtClassName;
+  public static String getPresentableClassName(@Nullable String rtClassName, JavaRunConfigurationModule configurationModule) {
+    if (StringUtil.isEmpty(rtClassName)) {
+      return null;
     }
-    return rtClassName.substring(lastDot + 1, rtClassName.length());
+
+    int lastDot = rtClassName.lastIndexOf('.');
+    return lastDot == -1 || lastDot == rtClassName.length() - 1 ? rtClassName : rtClassName.substring(lastDot + 1, rtClassName.length());
   }
 
   public static Module findModule(@NotNull final PsiClass psiClass) {
@@ -196,9 +195,8 @@ public class JavaExecutionUtil {
     return PsiLocation.fromPsiElement(classes[0]);
   }
 
-  public static String getShortClassName(final String fqName) {
-    if (fqName == null) return "";
-    return StringUtil.getShortName(fqName);
+  public static String getShortClassName(@Nullable String fqName) {
+    return fqName == null ? "" : StringUtil.getShortName(fqName);
   }
 
   public static void showExecutionErrorMessage(final ExecutionException e, final String title, final Project project) {
diff --git a/platform/lang-api/src/com/intellij/execution/configurations/LocatableConfigurationBase.java b/platform/lang-api/src/com/intellij/execution/configurations/LocatableConfigurationBase.java
index 0e610d52b0c6..ccfa80316c25 100644
--- a/platform/lang-api/src/com/intellij/execution/configurations/LocatableConfigurationBase.java
+++ b/platform/lang-api/src/com/intellij/execution/configurations/LocatableConfigurationBase.java
@@ -18,8 +18,9 @@ package com.intellij.execution.configurations;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.util.InvalidDataException;
 import com.intellij.openapi.util.WriteExternalException;
-import com.intellij.util.xmlb.annotations.Transient;
+import com.intellij.util.xmlb.annotations.Attribute;
 import org.jdom.Element;
+import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 /**
@@ -34,13 +35,12 @@ public abstract class LocatableConfigurationBase extends RunConfigurationBase im
 
   private boolean myNameIsGenerated;
 
-  protected LocatableConfigurationBase(Project project,
-                                       ConfigurationFactory factory, String name) {
+  protected LocatableConfigurationBase(Project project, @NotNull ConfigurationFactory factory, String name) {
     super(project, factory, name);
   }
 
   @Override
-  @Transient
+  @Attribute("nameIsGenerated")
   public boolean isGeneratedName() {
     return suggestedName() != null && myNameIsGenerated;
   }
@@ -65,20 +65,23 @@ public abstract class LocatableConfigurationBase extends RunConfigurationBase im
   @Override
   public void readExternal(Element element) throws InvalidDataException {
     super.readExternal(element);
-    myNameIsGenerated = "true".equals(element.getAttributeValue(ATTR_NAME_IS_GENERATED));
+
+    if (!isNewSerializationUsed()) {
+      myNameIsGenerated = "true".equals(element.getAttributeValue(ATTR_NAME_IS_GENERATED));
+    }
   }
 
   @Override
   public void writeExternal(Element element) throws WriteExternalException {
     super.writeExternal(element);
-    if (myNameIsGenerated && suggestedName() != null) {
+
+    if (!isNewSerializationUsed() && myNameIsGenerated && suggestedName() != null) {
       element.setAttribute(ATTR_NAME_IS_GENERATED, "true");
     }
   }
 
   @Override
   public void checkConfiguration() throws RuntimeConfigurationException {
-
   }
 
   /**
diff --git a/platform/lang-api/src/com/intellij/execution/configurations/ModuleBasedConfiguration.java b/platform/lang-api/src/com/intellij/execution/configurations/ModuleBasedConfiguration.java
index 9f640fb6a5b3..9c5e7f9613ae 100644
--- a/platform/lang-api/src/com/intellij/execution/configurations/ModuleBasedConfiguration.java
+++ b/platform/lang-api/src/com/intellij/execution/configurations/ModuleBasedConfiguration.java
@@ -48,7 +48,7 @@ public abstract class ModuleBasedConfiguration<ConfigurationModule extends RunCo
   protected static final String TO_CLONE_ELEMENT_NAME = "toClone";
 
   public ModuleBasedConfiguration(final String name,
-                                  final ConfigurationModule configurationModule, final ConfigurationFactory factory) {
+                                  @NotNull ConfigurationModule configurationModule, @NotNull ConfigurationFactory factory) {
     super(configurationModule.getProject(), factory, name);
     myModule = configurationModule;
   }
diff --git a/platform/lang-api/src/com/intellij/execution/configurations/RunConfigurationBase.java b/platform/lang-api/src/com/intellij/execution/configurations/RunConfigurationBase.java
index a9849d142309..020395f3005f 100644
--- a/platform/lang-api/src/com/intellij/execution/configurations/RunConfigurationBase.java
+++ b/platform/lang-api/src/com/intellij/execution/configurations/RunConfigurationBase.java
@@ -63,7 +63,7 @@ public abstract class RunConfigurationBase extends UserDataHolderBase
   private boolean myShowConsoleOnStdErr = false;
   private String myFileOutputPath = null;
 
-  protected RunConfigurationBase(final Project project, final ConfigurationFactory factory, final String name) {
+  protected RunConfigurationBase(final Project project, @NotNull ConfigurationFactory factory, final String name) {
     myProject = project;
     myFactory = factory;
     myName = name;
@@ -211,11 +211,14 @@ public abstract class RunConfigurationBase extends UserDataHolderBase
     final Element fileOutputElement = element.getChild(FILE_OUTPUT);
     if (fileOutputElement != null) {
       myFileOutputPath = fileOutputElement.getAttributeValue(OUTPUT_FILE);
-      final String isSave = fileOutputElement.getAttributeValue(SAVE);
+      String isSave = fileOutputElement.getAttributeValue(SAVE);
       mySaveOutput = isSave != null && Boolean.parseBoolean(isSave);
     }
-    myShowConsoleOnStdOut = Boolean.parseBoolean(element.getAttributeValue(SHOW_CONSOLE_ON_STD_OUT));
-    myShowConsoleOnStdErr = Boolean.parseBoolean(element.getAttributeValue(SHOW_CONSOLE_ON_STD_ERR));
+
+    if (!isNewSerializationUsed()) {
+      myShowConsoleOnStdOut = Boolean.parseBoolean(element.getAttributeValue(SHOW_CONSOLE_ON_STD_OUT));
+      myShowConsoleOnStdErr = Boolean.parseBoolean(element.getAttributeValue(SHOW_CONSOLE_ON_STD_ERR));
+    }
   }
 
   @Override
diff --git a/platform/lang-api/src/com/intellij/execution/configurations/RunConfigurationModule.java b/platform/lang-api/src/com/intellij/execution/configurations/RunConfigurationModule.java
index 21292428f11d..3d0df1bb7cb5 100644
--- a/platform/lang-api/src/com/intellij/execution/configurations/RunConfigurationModule.java
+++ b/platform/lang-api/src/com/intellij/execution/configurations/RunConfigurationModule.java
@@ -120,7 +120,7 @@ public class RunConfigurationModule implements JDOMExternalizable {
   }
 
   public String getModuleName() {
-    return myModuleName != null ? myModuleName : "";
+    return StringUtil.notNullize(myModuleName);
   }
 
   private ModuleManager getModuleManager() {
diff --git a/platform/lang-impl/src/com/intellij/execution/ExternalizablePath.java b/platform/lang-impl/src/com/intellij/execution/ExternalizablePath.java
index 481d71d132f1..84f593513a1a 100644
--- a/platform/lang-impl/src/com/intellij/execution/ExternalizablePath.java
+++ b/platform/lang-impl/src/com/intellij/execution/ExternalizablePath.java
@@ -18,10 +18,12 @@ package com.intellij.execution;
 import com.intellij.openapi.util.InvalidDataException;
 import com.intellij.openapi.util.JDOMExternalizable;
 import com.intellij.openapi.util.WriteExternalException;
+import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.openapi.vfs.LocalFileSystem;
 import com.intellij.openapi.vfs.VirtualFileManager;
 import org.jdom.Element;
 import org.jetbrains.annotations.NonNls;
+import org.jetbrains.annotations.Nullable;
 
 import java.io.File;
 
@@ -51,16 +53,10 @@ public class ExternalizablePath implements JDOMExternalizable {
   }
 
   public static String urlValue(String localPath) {
-    if (localPath == null) return "";
-    localPath = localPath.trim();
-    if (localPath.length() == 0) return "";
-    return VirtualFileManager.constructUrl(LocalFileSystem.PROTOCOL, localPath.replace(File.separatorChar, '/'));
+    return StringUtil.isEmptyOrSpaces(localPath) ? "" : VirtualFileManager.constructUrl(LocalFileSystem.PROTOCOL, localPath.trim().replace(File.separatorChar, '/'));
   }
 
-  public static String localPathValue(String url) {
-    if (url == null) return "";
-    url = url.trim();
-    if (url.length() == 0) return "";
-    return VirtualFileManager.extractPath(url).replace('/', File.separatorChar);
+  public static String localPathValue(@Nullable String url) {
+    return StringUtil.isEmptyOrSpaces(url) ? "" : VirtualFileManager.extractPath(url.trim()).replace('/', File.separatorChar);
   }
 }
diff --git a/platform/lang-impl/src/com/intellij/execution/ProgramRunnerUtil.java b/platform/lang-impl/src/com/intellij/execution/ProgramRunnerUtil.java
index 5ad5f73b954a..6e332d48459f 100644
--- a/platform/lang-impl/src/com/intellij/execution/ProgramRunnerUtil.java
+++ b/platform/lang-impl/src/com/intellij/execution/ProgramRunnerUtil.java
@@ -142,10 +142,12 @@ public class ProgramRunnerUtil {
     return configurationIcon;
   }
 
-  public static String shortenName(final String name, final int toBeAdded) {
-    if (name == null) return "";
+  public static String shortenName(@Nullable String name, final int toBeAdded) {
+    if (name == null) {
+      return "";
+    }
+
     final int symbols = Math.max(10, 20 - toBeAdded);
-    if (name.length() < symbols) return name;
-    else return name.substring(0, symbols) + "...";
+    return name.length() < symbols ? name : name.substring(0, symbols) + "...";
   }
 }
diff --git a/plugins/coverage/src/com/intellij/execution/configurations/coverage/JavaCoverageEnabledConfiguration.java b/plugins/coverage/src/com/intellij/execution/configurations/coverage/JavaCoverageEnabledConfiguration.java
index 9d68bc13a67c..5e0c5462651d 100644
--- a/plugins/coverage/src/com/intellij/execution/configurations/coverage/JavaCoverageEnabledConfiguration.java
+++ b/plugins/coverage/src/com/intellij/execution/configurations/coverage/JavaCoverageEnabledConfiguration.java
@@ -26,6 +26,7 @@ import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.util.DefaultJDOMExternalizer;
 import com.intellij.openapi.util.InvalidDataException;
 import com.intellij.openapi.util.WriteExternalException;
+import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.ui.classFilter.ClassFilter;
 import com.intellij.util.ArrayUtil;
 import org.jdom.Element;
@@ -220,10 +221,10 @@ public class JavaCoverageEnabledConfiguration extends CoverageEnabledConfigurati
     return myCoverageFilePath;
   }
 
-  public void setUpCoverageFilters(String className, String packageName) {
+  public void setUpCoverageFilters(@Nullable String className, @Nullable String packageName) {
     if (getCoveragePatterns() == null) {
       String pattern = null;
-      if (className != null && className.length() > 0) {
+      if (!StringUtil.isEmpty(className)) {
         int index = className.lastIndexOf('.');
         if (index >= 0) {
           pattern = className.substring(0, index);
@@ -233,8 +234,7 @@ public class JavaCoverageEnabledConfiguration extends CoverageEnabledConfigurati
         pattern = packageName;
       }
 
-
-      if (pattern != null && pattern.length() > 0) {
+      if (!StringUtil.isEmpty(pattern)) {
         setCoveragePatterns(new ClassFilter[]{new ClassFilter(pattern + ".*")});
       }
     }
diff --git a/plugins/groovy/src/org/jetbrains/plugins/groovy/mvc/MvcRunConfiguration.java b/plugins/groovy/src/org/jetbrains/plugins/groovy/mvc/MvcRunConfiguration.java
index eec06827a551..d921fe0aabbd 100644
--- a/plugins/groovy/src/org/jetbrains/plugins/groovy/mvc/MvcRunConfiguration.java
+++ b/plugins/groovy/src/org/jetbrains/plugins/groovy/mvc/MvcRunConfiguration.java
@@ -126,6 +126,7 @@ public abstract class MvcRunConfiguration extends ModuleBasedConfiguration<RunCo
     throw new UnsupportedOperationException();
   }
 
+  @Nullable
   @Override
   public String getAlternativeJrePath() {
     return null;
diff --git a/plugins/groovy/src/org/jetbrains/plugins/groovy/runner/GroovyScriptRunConfiguration.java b/plugins/groovy/src/org/jetbrains/plugins/groovy/runner/GroovyScriptRunConfiguration.java
index 984089056dfd..3d9ed638717e 100644
--- a/plugins/groovy/src/org/jetbrains/plugins/groovy/runner/GroovyScriptRunConfiguration.java
+++ b/plugins/groovy/src/org/jetbrains/plugins/groovy/runner/GroovyScriptRunConfiguration.java
@@ -339,6 +339,7 @@ public class GroovyScriptRunConfiguration extends ModuleBasedConfiguration<RunCo
     throw new UnsupportedOperationException();
   }
 
+  @Nullable
   @Override
   public String getAlternativeJrePath() {
     throw new UnsupportedOperationException();
diff --git a/plugins/testng/src/com/theoryinpractice/testng/configuration/TestNGConfiguration.java b/plugins/testng/src/com/theoryinpractice/testng/configuration/TestNGConfiguration.java
index 70b5693be574..034dc0ca9698 100644
--- a/plugins/testng/src/com/theoryinpractice/testng/configuration/TestNGConfiguration.java
+++ b/plugins/testng/src/com/theoryinpractice/testng/configuration/TestNGConfiguration.java
@@ -225,6 +225,7 @@ public class TestNGConfiguration extends ModuleBasedConfiguration<JavaRunConfigu
      this.ALTERNATIVE_JRE_PATH_ENABLED = enabled;
    }
 
+   @Nullable
    public String getAlternativeJrePath() {
      return ALTERNATIVE_JRE_PATH;
    }