diff --git a/build.gradle b/build.gradle
index 77cfa67b56..bbfeb03c22 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,111 +1 @@
-plugins {
-    id 'org.springframework.boot' version '1.5.8.RELEASE'
-    id 'com.github.kt3k.coveralls' version '2.6.3'
-}
-
-springBoot {
-    mainClass = "ru.atom.chat.ChatApplication"
-}
-
-// constants declaration
-ext {
-    jdkVersion = 1.8
-
-    junitVersion = "4.12"
-    log4jVersion = "2.7"
-    jetbrainsAnnotationVersion = "15.0"
-    okhttpVersion = "3.6.0"
-    gsonjVersion = "2.7"
-    postgresVersion = "9.4-1200-jdbc41"
-    jetbrainsAnnotationVersion = "15.0"
-    hibernateVersion = "5.1.10.Final"
-    jolVersion = "0.8"
-}
-
-allprojects {
-    group = "technoatom"
-    version = "1.0-SNAPSHOT"
-
-    apply plugin: 'java'
-    apply plugin: 'checkstyle'
-    apply plugin: 'jacoco'
-
-    repositories {
-        mavenCentral()
-    }
-
-    sourceCompatibility = jdkVersion
-    targetCompatibility = jdkVersion
-}
-
-subprojects {
-    if (!project.name.equals('bomberman/frontend'))
-        apply plugin: 'org.springframework.boot'
-
-
-    checkstyle {
-        ignoreFailures = false
-        toolVersion = '7.5'
-        configFile = rootProject.file('config/checkstyle/checkstyle.xml')
-    }
-
-    tasks.withType(Checkstyle) {
-        reports {
-            xml.enabled false
-            html.destination "$rootProject.buildDir/report/${project.name}.html"
-            html.stylesheet resources.text.fromFile(rootProject.file('config/checkstyle/checkstyle-custom.xsl'))
-        }
-    }
-
-}
-
-// common libraries declaration
-ext.libraries = [
-        spring_boot : [
-            "org.springframework.boot:spring-boot-starter-web",
-            "org.springframework.boot:spring-boot-starter-actuator",
-        ],
-
-        spring_boot_test : "org.springframework.boot:spring-boot-starter-test",
-
-        spring_boot_websocket: "org.springframework.boot:spring-boot-starter-websocket",
-        spring_boot_jpa: "org.springframework.boot:spring-boot-starter-data-jpa",
-
-        junit: "junit:junit:$junitVersion",
-        log4j: [
-            "org.apache.logging.log4j:log4j-api:$log4jVersion",
-            "org.apache.logging.log4j:log4j-core:$log4jVersion"
-        ],
-        jetbrainsAnnotations: "org.jetbrains:annotations:$jetbrainsAnnotationVersion",
-        okhttp: "com.squareup.okhttp3:okhttp:$okhttpVersion",
-        gson: "com.google.code.gson:gson:$gsonjVersion",
-        postgres: "org.postgresql:postgresql:$postgresVersion",
-        hibernate: "org.hibernate:hibernate-core:$hibernateVersion",
-        jol: "org.openjdk.jol:jol-core:$jolVersion",
-        jol_samples: "org.openjdk.jol:jol-samples:$jolVersion"
-]
-
-// code coverage settings
-jacocoTestReport {
-    additionalSourceDirs = files(subprojects.sourceSets.main.allSource.srcDirs)
-    sourceDirectories = files(subprojects.sourceSets.main.allSource.srcDirs)
-    classDirectories = files(subprojects.sourceSets.main.output)
-    executionData = files(subprojects.jacocoTestReport.executionData)
-    onlyIf = {
-        true
-    }
-
-    reports {
-            xml.enabled = true
-            html.enabled = true
-    }
-    doFirst {
-        executionData = files(executionData.findAll {
-            it.exists()
-        })
-    }
-}
-
-coveralls {
-    sourceDirs = files(subprojects.sourceSets.main.allSource.srcDirs).files.absolutePath
-}
+apply plugin: 'java'
diff --git a/lecture01/build.gradle b/lecture01/build.gradle
index fcf825dd7d..83a96b30b8 100644
--- a/lecture01/build.gradle
+++ b/lecture01/build.gradle
@@ -1,16 +1,22 @@
+repositories {
+    mavenCentral()
+}
+
+apply plugin: 'java'
+apply plugin: 'checkstyle'
+
 dependencies {
-    testCompile rootProject.libraries.junit
+    // https://mvnrepository.com/artifact/junit/junit
+    testCompile group: 'junit', name: 'junit', version: '4.4'
 }
 
-sourceSets {
-    main {
-        java {
-            srcDirs = ['src/main/java']
-        }
-    }
-    test {
-        java {
-            srcDirs = ['src/test/java']
-        }
-    }
-}
\ No newline at end of file
+checkstyle {
+    ignoreFailures = false
+    toolVersion = '7.5'
+    configFile = new File('../config/checkstyle/checkstyle.xml')
+}
+
+jar {
+    from configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }
+    manifest { attributes 'Main-Class': 'ru.atom.HelloWorld' }
+}
diff --git a/lecture01/gradle/wrapper/gradle-wrapper.jar b/lecture01/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000000..ed88a042a2
Binary files /dev/null and b/lecture01/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/lecture01/gradle/wrapper/gradle-wrapper.properties b/lecture01/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000000..f51202dd25
--- /dev/null
+++ b/lecture01/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.5.1-bin.zip
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/lecture01/gradlew b/lecture01/gradlew
new file mode 100755
index 0000000000..cccdd3d517
--- /dev/null
+++ b/lecture01/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/lecture01/gradlew.bat b/lecture01/gradlew.bat
new file mode 100644
index 0000000000..e95643d6a2
--- /dev/null
+++ b/lecture01/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/lecture01/src/test/java/ru/atom/HelloWorldTest.java b/lecture01/src/test/java/ru/atom/HelloWorldTest.java
index f7652d6182..c5b5f07a8f 100644
--- a/lecture01/src/test/java/ru/atom/HelloWorldTest.java
+++ b/lecture01/src/test/java/ru/atom/HelloWorldTest.java
@@ -2,15 +2,12 @@
 
 import org.junit.Test;
 
-import static org.hamcrest.MatcherAssert.assertThat;
-import static org.hamcrest.core.Is.is;
-import static org.hamcrest.core.IsEqual.equalTo;
-import static org.hamcrest.core.IsNot.not;
+import static junit.framework.Assert.assertEquals;
 
 public class HelloWorldTest {
+
     @Test
-    public void getHelloWorld() throws Exception {
-        assertThat(HelloWorld.getHelloWorld(), is(equalTo("Hello, World!")));
-        assertThat(HelloWorld.getHelloWorld(), is(not(equalTo("Some strange string"))));
+    public void getHelloWorld() {
+        assertEquals("Hello, World!", HelloWorld.getHelloWorld());
     }
 }
\ No newline at end of file
diff --git a/settings.gradle b/settings.gradle
index c9e92c1eb9..930059b4c0 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1,15 +1,2 @@
 rootProject.name = 'atom'
 include 'lecture01'
-include 'lecture02'
-include 'lecture03'
-include 'lecture04'
-include 'lecture05'
-include 'lecture06'
-include 'lecture07'
-include 'lecture08'
-include 'lecture09'
-include 'lecture10'
-include 'lecture11'
-include 'lecture12'
-include 'bomberman/frontend'
-include 'homeworks/HW2'