#106 add checkstyle rules

checkstyle.xml

@@ -100,7 +100,7 @@
 
         <!-- Checks for imports                              -->
         <!-- See http://checkstyle.sf.net/config_import.html -->
-        <!--<module name="AvoidStarImport"/>-->
+        <module name="AvoidStarImport"/>
         <module name="IllegalImport"/> <!-- defaults to sun.* packages -->
         <module name="RedundantImport"/>
         <!--module name="UnusedImports">
@@ -136,7 +136,7 @@
         <module name="AvoidNestedBlocks"/>
         <module name="EmptyBlock"/>
         <module name="LeftCurly"/>
-        <!--<module name="NeedBraces"/>-->
+        <module name="NeedBraces"/>
         <module name="RightCurly"/>
 
         <!-- Checks for common coding problems               -->

src/main/java/ru/ulstu/core/model/BaseEntity.java

@@ -1,6 +1,10 @@
 package ru.ulstu.core.model;
 
-import javax.persistence.*;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.MappedSuperclass;
+import javax.persistence.Version;
 import java.io.Serializable;
 
 @MappedSuperclass

src/main/java/ru/ulstu/core/util/DateUtils.java

@@ -1,6 +1,11 @@
 package ru.ulstu.core.util;
 
-import java.time.*;
+import java.time.Instant;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+import java.time.Month;
+import java.time.ZoneId;
 import java.util.Arrays;
 import java.util.Calendar;
 import java.util.Date;

src/main/java/ru/ulstu/odin/model/OdinField.java

@@ -31,14 +31,13 @@ public abstract class OdinField implements Comparable {
             return this.name().toLowerCase();
         }
     }
-
-    private Field field;
     protected final OdinFieldType fieldType;
     protected final String fieldName;
     protected final String caption;
     protected final OdinVisible.OdinVisibleType visible;
     protected final boolean readOnly;
     protected final boolean notEmpty;
+    private Field field;
 
     public OdinField(Field field, OdinFieldType fieldType) {
         this.field = field;
@@ -126,8 +125,12 @@ public abstract class OdinField implements Comparable {
 
     @Override
     public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
         OdinField odinField = (OdinField) o;
         return Objects.equals(fieldName, odinField.fieldName);
     }

src/main/java/ru/ulstu/paper/service/LatexService.java

@@ -12,11 +12,11 @@ import java.nio.file.Files;
 
 @Service
 public class LatexService {
+    private final String pdfLatexError = "Errors occurred while executing pdfLaTeX.";
+    private final String bibtexError = "Errors occurred while executing bibtex.";
     private String errorMessage;
     private File pdfFile;
     private FileService fileService;
-    private final String pdfLatexError = "Errors occurred while executing pdfLaTeX.";
-    private final String bibtexError = "Errors occurred while executing bibtex.";
 
     public LatexService(FileService fileService) {
         this.fileService = fileService;
@@ -42,7 +42,9 @@ public class LatexService {
         InputStreamReader inputStreamReader = new InputStreamReader(process.getInputStream());
 
         try (BufferedReader bufferedReader = new BufferedReader(inputStreamReader)) {
-            while ((bufferedReader.readLine()) != null) ;
+            while ((bufferedReader.readLine()) != null) {
+                //
+            }
         }
 
         int exitCode = process.waitFor();
@@ -55,16 +57,18 @@ public class LatexService {
     private boolean generate(String filename, File dir) throws IOException, InterruptedException {
         startProcess(new String[]{"pdflatex", filename, "--interaction=nonstopmode"}, dir, pdfLatexError);
         startProcess(new String[]{"bibtex", filename}, dir, bibtexError);
-        if (startProcess(new String[]{"pdflatex", filename, "--interaction=nonstopmode"}, dir, pdfLatexError) != 0)
+        if (startProcess(new String[]{"pdflatex", filename, "--interaction=nonstopmode"}, dir, pdfLatexError) != 0) {
             return false;
+        }
         return checkPdf(filename, dir);
     }
 
     private boolean checkPdf(String filename, File dir) {
         pdfFile = new File(dir.getAbsolutePath() + File.separator + filename + ".pdf");
 
-        if (pdfFile.isFile()) return true;
-        else {
+        if (pdfFile.isFile()) {
+            return true;
+        } else {
             errorMessage = "The pdf file could not be created.";
             return false;
         }

src/main/java/ru/ulstu/students/controller/TaskController.java

@@ -3,7 +3,11 @@ package ru.ulstu.students.controller;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.ModelMap;
 import org.springframework.validation.Errors;
-import org.springframework.web.bind.annotation.*;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
 import ru.ulstu.deadline.model.Deadline;
 import ru.ulstu.students.model.Task;
 import ru.ulstu.students.model.TaskDto;
@@ -16,7 +20,9 @@ import java.util.List;
 import java.util.stream.Collectors;
 
 import static org.springframework.util.StringUtils.isEmpty;
-import static ru.ulstu.students.controller.Navigation.*;
+import static ru.ulstu.students.controller.Navigation.REDIRECT_TO;
+import static ru.ulstu.students.controller.Navigation.TASKS_PAGE;
+import static ru.ulstu.students.controller.Navigation.TASK_PAGE;
 
 @Controller()
 @RequestMapping(value = "/students")

src/main/java/ru/ulstu/students/model/Task.java

@@ -7,7 +7,19 @@ import ru.ulstu.core.model.BaseEntity;
 import ru.ulstu.deadline.model.Deadline;
 import ru.ulstu.tags.model.Tag;
 
-import javax.persistence.*;
+import javax.persistence.CascadeType;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.EnumType;
+import javax.persistence.Enumerated;
+import javax.persistence.FetchType;
+import javax.persistence.JoinColumn;
+import javax.persistence.JoinTable;
+import javax.persistence.ManyToMany;
+import javax.persistence.OneToMany;
+import javax.persistence.OrderBy;
+import javax.persistence.Temporal;
+import javax.persistence.TemporalType;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;

src/main/java/ru/ulstu/user/model/UserSession.java

@@ -2,7 +2,13 @@ package ru.ulstu.user.model;
 
 import ru.ulstu.core.model.BaseEntity;
 
-import javax.persistence.*;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.Table;
+import javax.persistence.Temporal;
+import javax.persistence.TemporalType;
 import javax.validation.constraints.NotNull;
 import java.util.Date;