init

.gitignore

+/.gradle/
+/.idea/
+/build/

build.gradle

+plugins {
+    id 'java'
+}
+
+group 'org.example'
+version '1.0-SNAPSHOT'
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.7.0'
+    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.7.0'
+
+    compileOnly 'org.projectlombok:lombok:1.18.20'
+    annotationProcessor 'org.projectlombok:lombok:1.18.20'
+
+    testCompileOnly 'org.projectlombok:lombok:1.18.20'
+    testAnnotationProcessor 'org.projectlombok:lombok:1.18.20'
+}
+
+test {
+    useJUnitPlatform()
+}
\ No newline at end of file

gradle/wrapper/gradle-wrapper.properties

+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.8-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  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 "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+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 or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; 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=`expr $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"
+
+exec "$JAVACMD" "$@"

gradlew.bat

+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@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 Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@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="-Xmx64m" "-Xms64m"
+
+@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 execute
+
+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 execute
+
+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
+
+: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 %*
+
+: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

settings.gradle

+rootProject.name = 'ChatClient'
+

src/main/java/Client.java

+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.PrintWriter;
+import java.net.Socket;
+
+public class Client extends Thread{
+    private Integer port;
+    private String ip;
+    private Socket clientSocket;
+    private PrintWriter out;
+    private BufferedReader in;
+
+    Client(String ip, Integer port){
+        this.ip = ip;
+        this.port = port;
+    }
+
+    @Override
+    public void run() {
+        try {
+            System.out.println("CLient Run...");
+            startConnection(this.ip, this.port);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public void startConnection(String ip, int port) throws IOException {
+        System.out.println("Creating connection");
+        clientSocket = new Socket(ip, port);
+
+        out = new PrintWriter(clientSocket.getOutputStream(), true);
+        in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
+        System.out.println("Already");
+    }
+
+    public String sendMessage(String msg) throws IOException {
+        System.out.println("Send message");
+        out.println(msg);
+        String resp = in.readLine();
+        return resp;
+    }
+
+    public void stopConnection() throws IOException {
+        in.close();
+        out.close();
+        clientSocket.close();
+    }
+}
\ No newline at end of file

src/main/java/ClientApp.java

+import CommandLine.CommandLineController;
+
+import java.io.IOException;
+
+public class ClientApp {
+    private static EchoServer echoServer = new EchoServer(7777);
+    private static Client client = new Client("localhost", 7777);
+    private static CommandLineController commandLineController = new CommandLineController();
+
+    public static void main(String[] args) throws IOException, InterruptedException {
+//        System.out.println("StartApp");
+//        echoServer.start();
+//        client.start();
+//        Thread.sleep(1000);
+        commandLineController.askNickname();
+        commandLineController.displayMessage("message");
+
+        //System.out.println(commandLineController.getNickname());
+//        client.sendMessage(commandLineController.getNickname());
+    }
+
+}

src/main/java/CommandLine/Ansi.java

+package CommandLine;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Usage:
+ * <li>String msg = Ansi.Red.and(Ansi.BgYellow).format("Hello %s", name)</li>
+ * <li>String msg = Ansi.Blink.colorize("BOOM!")</li>
+ *
+ * Or, if you are adverse to that, you can use the constants directly:
+ * <li>String msg = new Ansi(Ansi.ITALIC, Ansi.GREEN).format("Green money")</li>
+ * Or, even:
+ * <li>String msg = Ansi.BLUE + "scientific"</li>
+ *
+ * NOTE: Nothing stops you from combining multiple FG colors or BG colors,
+ *       but only the last one will display.
+ *
+ * @author dain
+ *
+ */
+public final class Ansi {
+
+    // Color code strings from:
+    // http://www.topmudsites.com/forums/mud-coding/413-java-ansi.html
+    public static final String	SANE				= "\u001B[0m";
+
+    public static final String	HIGH_INTENSITY		= "\u001B[1m";
+    public static final String	LOW_INTENSITY		= "\u001B[2m";
+
+    public static final String	ITALIC				= "\u001B[3m";
+    public static final String	UNDERLINE			= "\u001B[4m";
+    public static final String	BLINK				= "\u001B[5m";
+    public static final String	RAPID_BLINK			= "\u001B[6m";
+    public static final String	REVERSE_VIDEO		= "\u001B[7m";
+    public static final String	INVISIBLE_TEXT		= "\u001B[8m";
+
+    public static final String	BLACK				= "\u001B[30m";
+    public static final String	RED					= "\u001B[31m";
+    public static final String	GREEN				= "\u001B[32m";
+    public static final String	YELLOW				= "\u001B[33m";
+    public static final String	BLUE				= "\u001B[34m";
+    public static final String	MAGENTA				= "\u001B[35m";
+    public static final String	CYAN				= "\u001B[36m";
+    public static final String	WHITE				= "\u001B[37m";
+
+    public static final String	BACKGROUND_BLACK	= "\u001B[40m";
+    public static final String	BACKGROUND_RED		= "\u001B[41m";
+    public static final String	BACKGROUND_GREEN	= "\u001B[42m";
+    public static final String	BACKGROUND_YELLOW	= "\u001B[43m";
+    public static final String	BACKGROUND_BLUE		= "\u001B[44m";
+    public static final String	BACKGROUND_MAGENTA	= "\u001B[45m";
+    public static final String	BACKGROUND_CYAN		= "\u001B[46m";
+    public static final String	BACKGROUND_WHITE	= "\u001B[47m";
+
+    public static final Ansi HighIntensity = new Ansi(HIGH_INTENSITY);
+    public static final Ansi Bold = HighIntensity;
+    public static final Ansi LowIntensity = new Ansi(LOW_INTENSITY);
+    public static final Ansi Normal = LowIntensity;
+
+    public static final Ansi Italic = new Ansi(ITALIC);
+    public static final Ansi Underline = new Ansi(UNDERLINE);
+    public static final Ansi Blink = new Ansi(BLINK);
+    public static final Ansi RapidBlink = new Ansi(RAPID_BLINK);
+
+    public static final Ansi Black = new Ansi(BLACK);
+    public static final Ansi Red = new Ansi(RED);
+    public static final Ansi Green = new Ansi(GREEN);
+    public static final Ansi Yellow = new Ansi(YELLOW);
+    public static final Ansi Blue = new Ansi(BLUE);
+    public static final Ansi Magenta = new Ansi(MAGENTA);
+    public static final Ansi Cyan = new Ansi(CYAN);
+    public static final Ansi White = new Ansi(WHITE);
+
+    public static final Ansi BgBlack = new Ansi(BACKGROUND_BLACK);
+    public static final Ansi BgRed = new Ansi(BACKGROUND_RED);
+    public static final Ansi BgGreen = new Ansi(BACKGROUND_GREEN);
+    public static final Ansi BgYellow = new Ansi(BACKGROUND_YELLOW);
+    public static final Ansi BgBlue = new Ansi(BACKGROUND_BLUE);
+    public static final Ansi BgMagenta = new Ansi(BACKGROUND_MAGENTA);
+    public static final Ansi BgCyan = new Ansi(BACKGROUND_CYAN);
+    public static final Ansi BgWhite = new Ansi(BACKGROUND_WHITE);
+
+    final private String[] codes;
+    final private String codes_str;
+    public Ansi(String... codes) {
+        this.codes = codes;
+        String _codes_str = "";
+        for (String code : codes) {
+            _codes_str += code;
+        }
+        codes_str = _codes_str;
+    }
+
+    public Ansi and(Ansi other) {
+        List<String> both = new ArrayList<String>();
+        Collections.addAll(both, codes);
+        Collections.addAll(both, other.codes);
+        return new Ansi(both.toArray(new String[] {}));
+    }
+
+    public String colorize(String original) {
+        return codes_str + original + SANE;
+    }
+
+    public String format(String template, Object... args) {
+        return colorize(String.format(template, args));
+    }
+}

src/main/java/CommandLine/CommandLineController.java

+package CommandLine;
+
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import java.text.SimpleDateFormat;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.Date;
+import java.util.Scanner;
+
+@Getter
+@Setter
+@NoArgsConstructor
+public class CommandLineController {
+    private String nickname;
+    private Scanner scanner = new Scanner(System.in);
+
+    public void askNickname() {
+        System.out.println(Ansi.Green.and(Ansi.Bold).colorize("Enter username: "));
+        nickname = scanner.nextLine();
+    }
+    public void displayMessage(String message) {
+        LocalDateTime myDateObj = LocalDateTime.now();
+        DateTimeFormatter myFormatObj = DateTimeFormatter.ofPattern("dd.MM.yyyy HH:mm:ss");
+        String formattedDate = myDateObj.format(myFormatObj);
+
+        // display of [formated date] nickname: message
+        System.out.println(
+                Ansi.Bold.and(Ansi.Magenta).format("[%s] ", formattedDate) +
+                Ansi.Green.format("%s: ",getNickname()) +
+                Ansi.Yellow.colorize(message)
+        );
+    }
+}

src/main/java/EchoServer.java

+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.PrintWriter;
+import java.net.ServerSocket;
+import java.net.Socket;
+
+public class EchoServer extends Thread {
+    private ServerSocket serverSocket;
+    private Socket clientSocket;
+    private PrintWriter out;
+    private BufferedReader in;
+    private Integer port;
+
+    EchoServer(Integer port) {
+        this.port = port;
+    }
+
+    @Override
+    public void run() {
+        try {
+            startServer(this.port);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public void startServer(int port) throws IOException {
+        System.out.println("Create socket");
+        serverSocket = new ServerSocket(port);
+        System.out.println("Waitng for client");
+        clientSocket = serverSocket.accept();
+        System.out.println("Connection accepted");
+        out = new PrintWriter(clientSocket.getOutputStream(), true);
+        in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
+
+        String inputLine;
+        System.out.println("Waitng for message");
+        while ((inputLine = in.readLine()) != null) {
+            System.out.println("Recive message: " + inputLine);
+            if (".".equals(inputLine)) {
+                out.println("good bye");
+                break;
+            }
+            out.println(inputLine);
+        }
+    }
+
+    public void stopServer() throws IOException {
+        in.close();
+        out.close();
+        serverSocket.close();
+    }
+
+    public static void main(String[] args) throws IOException {
+        EchoServer server=new EchoServer(6666);
+        server.start();
+    }
+}
\ No newline at end of file