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oefremidisoefremidis
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JDBC Into
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10 files changed

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Diff for: ‎java-path-core-databases/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>java-path-core</artifactId>
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<groupId>gr.codelearn</groupId>
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<version>2021.1.0</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>java-path-core-databases</artifactId>
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<properties>
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<maven.compiler.source>17</maven.compiler.source>
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<maven.compiler.target>17</maven.compiler.target>
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</properties>
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<dependencies>
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<!-- https://mvnrepository.com/artifact/com.h2database/h2 -->
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<dependency>
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<groupId>com.h2database</groupId>
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<artifactId>h2</artifactId>
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<version>1.4.200</version>
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</dependency>
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</dependencies>
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</project>

Diff for: ‎java-path-core-databases/src/main/java/gr/codelearn/core/showcase/databases/DataBaseSimple.java

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import com.thedeanda.lorem.Lorem;
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import com.thedeanda.lorem.LoremIpsum;
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import org.h2.tools.Server;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.sql.*;
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public class DataBaseSimple {
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private static final Logger logger = LoggerFactory.getLogger(DataBaseSimple.class);
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private static final Lorem generator = LoremIpsum.getInstance();
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private static final String DB_CONNECTION_URL_MEMORY_MODE = "jdbc:h2:mem:sample";
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private static final String DB_USERNAME = "sa";
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private static final String DB_PASSWORD = "";
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private static Server server;
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public static void main(String[] args) throws Exception {
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server = Server.createTcpServer("-tcpAllowOthers", "-tcpDaemon");
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server.start();
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logger.info("H2 server has started with status '{}'.", server.getStatus());
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org.h2.Driver.load();
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logger.info("H2 JDBC driver server has been successfully loaded.");
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Connection connection = DriverManager.getConnection(DB_CONNECTION_URL_MEMORY_MODE, DB_USERNAME, DB_PASSWORD);
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Statement statement = connection.createStatement();
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int result = statement.executeUpdate("CREATE TABLE IF NOT EXISTS Registration (" +
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" id INTEGER not NULL PRIMARY KEY, " +
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" first VARCHAR(20), " +
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" last VARCHAR(50), " +
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" age INTEGER " +
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");"
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);
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logger.info("Created table command was successful with result {}.", result);
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int rowsAffected = statement.executeUpdate("INSERT INTO Registration VALUES (101, 'John', 'Smith', 18)");
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logger.info("Update command was successful with {} row(s) affected.", rowsAffected);
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ResultSet resultSet = statement.executeQuery("SELECT * FROM Registration");
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while (resultSet.next()) {
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logger.info("ID: {}, First Name:{}, Last Name:{}, Age: {}",
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resultSet.getString("id"),
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resultSet.getString("first"),
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resultSet.getString("last"),
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resultSet.getString("age"));
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}
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server.stop();
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server.shutdown();
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logger.info("H2 server has been shutdown.");
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}
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}

Diff for: ‎java-path-core-databases/src/main/resources/log4j2.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<Configuration status="WARN" monitorInterval="30">
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<Properties>
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<Property name="LOG_PATTERN">
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%d{yyyy-MM-dd HH:mm:ss.SSS} %5p ${hostName} - [%15.15t] %-30.30c{1.} : %m%n%ex
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</Property>
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</Properties>
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<Appenders>
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<Console name="ConsoleAppender" target="SYSTEM_OUT" follow="true">
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<PatternLayout pattern="${LOG_PATTERN}"/>
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</Console>
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<!-- Rolling Random Access File Appender with a default buffer of 256 * 1024 bytes -->
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<RollingRandomAccessFile name="RollingRandomAccessFileAppender"
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fileName="logs/java-path-core-databases.log"
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filePattern="logs/java-path-core-databases-%d{yyyy-MM-dd}.zip">
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<PatternLayout>
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<Pattern>${LOG_PATTERN}</Pattern>
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</PatternLayout>
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<Policies>
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<TimeBasedTriggeringPolicy/>
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</Policies>
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<DefaultRolloverStrategy>
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<Delete basePath="logs">
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<IfLastModified age="30d"/>
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</Delete>
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</DefaultRolloverStrategy>
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</RollingRandomAccessFile>
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</Appenders>
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<Loggers>
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<AsyncLogger name="gr.codelearn" level="debug" additivity="false">
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<AppenderRef ref="ConsoleAppender"/>
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<AppenderRef ref="RollingRandomAccessFileAppender"/>
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</AsyncLogger>
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<Root level="info">
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<AppenderRef ref="ConsoleAppender"/>
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<AppenderRef ref="RollingRandomAccessFileAppender"/>
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</Root>
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</Loggers>
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</Configuration>

Diff for: ‎java-path-core-oop/src/main/java/gr/codelearn/core/showcase/oop/collections/Main.java

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package gr.codelearn.core.showcase.oop.collections;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashMap;
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import static java.util.Arrays.sort;
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public class Main {
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public static void main(String[] args) {
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String[] appsArray = new String[5];
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appsArray[0] = "word";
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appsArray[1] = "excel";
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appsArray[2] = "PowerPoint";
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appsArray[3] = "MS Team";
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appsArray[4] = "SharePoint";
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// for (int i = 0; i < appsArray.length; i++) {
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// System.out.println(appsArray[i]);
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// }
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//
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// System.out.println(appsArray[1]);
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//
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// for(String s : appsArray){
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// System.out.println(s);
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// }
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// float[] arr = new float[3];
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// arr[0] = 3.2f;
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System.out.println(Arrays.toString(appsArray));
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sort(appsArray);
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System.out.println(Arrays.toString(appsArray));
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// ArrayList
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// ArrayList appList = new ArrayList(); // Object
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// ArrayList<String> appList = new ArrayList<>();
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// appList.add("word");
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// appList.add("excel");
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// appList.add("powerpoint");
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// appList.add(5);
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// String ls = (String) appList.get(0);
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// System.out.println(appList.get(0));
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// System.out.println(appList.get(1));
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// for (int i = 0; i < appList.size(); i++) {
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// System.out.println(appList.get(i));
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// }
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//
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// for (String s : appList) {
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// System.out.println(s);
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// }
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// System.out.println(appList);
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// appList.remove("word");
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// appList.remove(0);
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// System.out.println(appList);
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// System.out.println(appsArray);
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// ArrayList<Float> alFloat = new ArrayList<>();
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// alFloat.add(12.7f);
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// float f = alFloat.get(0);
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// String s = new String("Hello");
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// Double d = 3.6;
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// Double d1 = new Double(5.2);
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// HashMap<String, String> appMap = new HashMap<>();
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// appMap.put("first", "word");
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// appMap.put("second", "excel");
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// appMap.put("third", "powerpoint");
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// appMap.put("first", "powerpoint");
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//
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// System.out.println(appMap);
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// System.out.println(appMap.get("second"));
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//
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// for (String key : appMap.keySet()) {
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// System.out.println(appMap.get(key));
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// }
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//
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// for(String value : appMap.values()){
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// System.out.println(value);
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// }
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}
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}

Diff for: ‎java-path-core-oop/src/main/java/gr/codelearn/core/showcase/oop/interfaces/LGControl.java

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package gr.codelearn.core.showcase.oop.interfaces;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class LGControl implements TVControl {
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private static final Logger logger = LoggerFactory.getLogger(LGControl.class);
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public void on(){
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logger.info("LG On");
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}
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public void off(){
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logger.info("LG Off");
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}
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public void selectChannel(){
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logger.info("LG Control ... selects....");
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}
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}

Diff for: ‎java-path-core-oop/src/main/java/gr/codelearn/core/showcase/oop/interfaces/MainInterfaces.java

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package gr.codelearn.core.showcase.oop.interfaces;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class MainInterfaces {
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private static final Logger logger = LoggerFactory.getLogger(MainInterfaces.class);
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public static void main(String[] args) {
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// TVControl tvControl = new TVControl();
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// tvControl.off();
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// LGControl lgControl = new LGControl();
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// lgControl.off();
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//
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// SamControl samControl = new SamControl();
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// samControl.off();
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TVControl tvControl = new LGControl();
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tvControl.off();
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tvControl = new SamControl();
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tvControl.off();
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}
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}

Diff for: ‎java-path-core-oop/src/main/java/gr/codelearn/core/showcase/oop/interfaces/SamControl.java

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package gr.codelearn.core.showcase.oop.interfaces;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class SamControl implements TVControl {
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private static final Logger logger = LoggerFactory.getLogger(SamControl.class);
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public void on(){
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logger.info("Samsung On");
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}
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public void off(){
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logger.info("Samsung Off");
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}
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public void selectChannel(){
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logger.info("Samsung Control ... selects....");
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}
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}

Diff for: ‎java-path-core-oop/src/main/java/gr/codelearn/core/showcase/oop/interfaces/StrangeControl.java

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package gr.codelearn.core.showcase.oop.interfaces;
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public class StrangeControl implements TVControl{
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@Override
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public void on() {
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}
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@Override
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public void off() {
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}
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}

Diff for: ‎java-path-core-oop/src/main/java/gr/codelearn/core/showcase/oop/interfaces/TVControl.java

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package gr.codelearn.core.showcase.oop.interfaces;
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public interface TVControl {
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void on();
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void off();
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default void selectChannel(){
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}
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}

Diff for: ‎pom.xml

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<module>java-path-core-basic</module>
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<module>java-path-core-maven</module>
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<module>java-path-core-oop</module>
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</modules>
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<module>java-path-core-databases</module>
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</modules>
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<!-- Properties/Variables -->
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<properties>

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