basic stuff

app/build.gradle.kts

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+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ * This generated file contains a sample Java application project to get you started.
+ * For more details on building Java & JVM projects, please refer to https://docs.gradle.org/8.10.2/userguide/building_java_projects.html in the Gradle documentation.
+ */
+
+plugins {
+    // Apply the application plugin to add support for building a CLI application in Java.
+    application
+}
+
+repositories {
+    // Use Maven Central for resolving dependencies.
+    mavenCentral()
+    maven {
+        name = "papermc"
+        url = uri("https://repo.papermc.io/repository/maven-public/")
+    }
+}
+
+dependencies {
+    // Use JUnit Jupiter for testing.
+    testImplementation(libs.junit.jupiter)
+
+    testRuntimeOnly("org.junit.platform:junit-platform-launcher")
+
+    // This dependency is used by the application.
+    implementation(libs.guava)
+    
+    compileOnly("io.papermc.paper:paper-api:1.21.4-R0.1-SNAPSHOT")
+}
+
+// Apply a specific Java toolchain to ease working on different environments.
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(21)
+    }
+}

app/src/main/java/net/xuyezo/main/Handler.java

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+package net.xuyezo.main;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.SQLException;
+
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+
+import io.papermc.paper.event.player.AsyncChatEvent;
+import net.kyori.adventure.text.TextComponent;
+
+public class Handler implements Listener {
+	Connection cc;
+	
+	public Handler(Connection c) {
+		this.cc = c;
+    	PreparedStatement stmt;
+		try {
+			stmt = cc.prepareStatement("CREATE TABLE IF NOT EXISTS main.text (username TEXT, date REAL, content TEXT)");
+	    	stmt.executeUpdate();
+		} catch (SQLException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+	}
+	
+    @EventHandler
+    public void onChat(AsyncChatEvent event) {
+    	PreparedStatement stmt;
+		try {
+			stmt = cc.prepareStatement("INSERT INTO main.text (username, date, content) values (?, ?, ?)");
+			stmt.setString(1, event.getPlayer().getName());
+		    stmt.setLong(2,  System.currentTimeMillis());
+		    stmt.setString(3, ((TextComponent) event.message()).content());
+	    	stmt.executeUpdate();
+		} catch (SQLException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+    }
+	
+}

app/src/main/java/net/xuyezo/main/Main.java

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+package net.xuyezo.main;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import org.bukkit.Bukkit;
+import org.bukkit.Server;
+import org.bukkit.plugin.java.JavaPlugin;
+
+public class Main extends JavaPlugin {
+
+	@Override
+	public void onEnable() {
+    	String host = this.getConfig().getString("dbhost");
+    	String pass = this.getConfig().getString("dbpass");
+    	String user = this.getConfig().getString("dbuser");
+    	Connection c = null;
+    	try {
+            c = DriverManager
+               .getConnection(host,
+               user,pass);
+    	}catch (Exception e) {
+            e.printStackTrace();
+            System.err.println(e.getClass().getName()+": "+e.getMessage());
+            System.exit(0);
+         }
+		
+		Bukkit.getPluginManager().registerEvents(new Handler(c), this);
+
+        Server server = getServer();
+	}
+}

app/src/main/resources/plugin.yml

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+name: DerverCore
+version: 2.0.0
+main: net.xuyezo.main.Main
+description: A test plugin
+author: BiglyDerv
+website: https://dervland.net/
+api-version: '1.21.4'
+load: STARTUP