Log4j v2 replaces the out-dated log4j v1

Author: jlolling

.classpath

@@ -30,7 +30,6 @@
 	<classpathentry kind="lib" path="libs/sapdbc-7_6_00_30_5567.jar"/>
 	<classpathentry kind="lib" path="libs/db2jcc_license_cu.jar"/>
 	<classpathentry kind="lib" path="libs/db2jcc4.jar"/>
-	<classpathentry kind="lib" path="libs/log4j-1.2.15.jar" sourcepath="libs/log4j-1.2.15-src.zip"/>
 	<classpathentry kind="lib" path="libs/jgoodies-looks-2.4.2.jar"/>
 	<classpathentry kind="lib" path="libs/tinylaf.jar"/>
 	<classpathentry kind="lib" path="libs/vertica_4.1.7_jdk_5.jar"/>
@@ -41,5 +40,7 @@
 	<classpathentry kind="lib" path="libs/postgresql-42.1.1.jar"/>
 	<classpathentry kind="lib" path="libs/ojdbc7.jar"/>
 	<classpathentry kind="lib" path="libs/mysql-connector-java-8.0.25.jar"/>
+	<classpathentry kind="lib" path="libs/log4j-api-2.17.1.jar" sourcepath="libs/log4j-api-2.17.1-sources.jar"/>
+	<classpathentry kind="lib" path="libs/log4j-core-2.17.1.jar" sourcepath="libs/log4j-core-2.17.1-sources.jar"/>
 	<classpathentry kind="output" path="classes"/>
 </classpath>

libs/log4j-1.2.15.jar

@@ -1 +1 @@
-20.8
+21.0

libs/log4j-api-2.17.1-sources.jar

@@ -5,7 +5,8 @@
 import java.sql.SQLException;
 import java.util.ArrayList;
 
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 
 
 /**
@@ -14,7 +15,7 @@
  */
 public abstract class CallableStatementDefinition extends PreparedStatementDefinition {
 
-    private static final Logger logger    = Logger.getLogger(CallableStatementDefinition.class);
+    private static final Logger logger    = LogManager.getLogger(CallableStatementDefinition.class);
 
     protected CallableStatement cs;
     private ArrayList<OutParameter>         outParams = new ArrayList<OutParameter>();

libs/log4j-api-2.17.1.jar

@@ -13,15 +13,16 @@
 import java.util.Properties;
 import java.util.StringTokenizer;
 
-import org.apache.log4j.Level;
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
 
 /**
  * Encapsulate a complete database.
  */
 public class DatabaseSession {
 
-    private static Logger staticLogger = Logger.getLogger(DatabaseSession.class);
+    private static Logger staticLogger = LogManager.getLogger(DatabaseSession.class);
 	private Logger currentLogger = staticLogger;
 
     /* id to provide access to multiple sessions */
@@ -154,20 +155,6 @@ public long getIdleTime() {
         }
     }
 
-    /**
-     * set debug-mode
-     * @param debug=true if additional output by the activities of database
-     * @deprecated
-     */
-    @Deprecated
-	public void setDebug(boolean debug_loc) {
-        if (debug_loc) {
-            currentLogger.setLevel(Level.DEBUG);
-        } else {
-            currentLogger.setLevel(Level.INFO);
-        }
-    }
-
     /**
      * marks this session as free for further usage
      * this method should only be used in class DatabaseSessionPool

libs/log4j-core-2.17.1-sources.jar

@@ -13,16 +13,17 @@
 import javax.management.MBeanServer;
 import javax.management.ObjectName;
 
-import org.apache.log4j.Appender;
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.core.Appender;
 
 /**
  * A database pool with static access and config methods which can be used in standalone applications.
  * @author Jan Lolling
  */
 public class DatabaseSessionPool {
 
-    private static final Logger logger = Logger.getLogger(DatabaseSessionPool.class);
+    private static final Logger logger = LogManager.getLogger(DatabaseSessionPool.class);
     private static final Vector<DatabaseSession> pool = new Vector<DatabaseSession>();
     private static String lastErrorMessage = null;
     private static final Object monitor = new Object();
@@ -45,26 +46,6 @@ public class DatabaseSessionPool {
 
     private DatabaseSessionPool() {}
 
-    /**
-     * add an appender only when appender is not already attached
-     * @param appender appender to add
-     */
-    public static void addAppender(Appender appender) {
-        if (logger.isAttached(appender) == false) {
-            logger.addAppender(appender);
-        }
-    }
-    
-    public static void removeAppender(Appender appender) {
-        if (logger.isAttached(appender)) {
-            logger.removeAppender(appender);
-        }
-    }
-    
-    public static void removeAllAppenders() {
-        logger.removeAllAppenders();
-    }
-    
     private static void error(String message, Exception e) {
         if (message == null) {
             message = "undeclared error";
@@ -432,7 +413,7 @@ private static class CheckPoolTask extends TimerTask {
         /**
          * Logger for this class
          */
-        private static final Logger logger = Logger.getLogger(CheckPoolTask.class);
+        private static final Logger logger = LogManager.getLogger(CheckPoolTask.class);
 
         public void run() {
             if (checkInProcess == false) {