Index: trunk/java-utils/src/main/java/de/ugoe/cs/util/console/PrintWriterListener.java
===================================================================
--- trunk/java-utils/src/main/java/de/ugoe/cs/util/console/PrintWriterListener.java	(revision 1899)
+++ trunk/java-utils/src/main/java/de/ugoe/cs/util/console/PrintWriterListener.java	(revision 1899)
@@ -0,0 +1,130 @@
+//   Copyright 2012 Georg-August-Universität Göttingen, Germany
+//
+//   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
+//
+//       http://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.
+
+package de.ugoe.cs.util.console;
+
+import java.io.PrintWriter;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.logging.Level;
+
+import de.ugoe.cs.util.console.listener.IErrorListener;
+import de.ugoe.cs.util.console.listener.IExceptionListener;
+import de.ugoe.cs.util.console.listener.IOutputListener;
+import de.ugoe.cs.util.console.listener.ITraceListener;
+
+/**
+ * <p>
+ * A listener that gets a PrintWriter and outputs all information to that PrintWriter. 
+ * </p>
+ * 
+ * @author Steffen Herbold
+ */
+public class PrintWriterListener implements IOutputListener, IErrorListener, ITraceListener,
+    IExceptionListener
+{
+
+    /**
+     * <p>
+     * Defines the trace level used by this console.
+     * </p>
+     */
+    private Level traceLevel;
+
+    private final SimpleDateFormat ft = new SimpleDateFormat("HH:mm:ss");
+
+    private final PrintWriter out;
+
+    /**
+     * <p>
+     * Creates a new PrintWriterListener. The trace level is {@link Level#WARNING}.
+     * </p>
+     */
+    public PrintWriterListener(PrintWriter out) {
+        this(out, Level.WARNING);
+    }
+
+    /**
+     * <p>
+     * Creates a new PrintWriterListener.
+     * </p>
+     * 
+     * @param traceLevel
+     *            trace level used by this text console
+     */
+    public PrintWriterListener(PrintWriter out, Level traceLevel) {
+        this.out = out;
+        this.traceLevel = traceLevel;
+    }
+
+    /**
+     * <p>
+     * Prints messages to out.
+     * </p>
+     * 
+     * @see ConsoleObserver#outputMsg(java.lang.String)
+     */
+    public void outputMsg(String newMessage) {
+        out.print(newMessage);
+    }
+
+    /**
+     * <p>
+     * Prints messages to out.
+     * </p>
+     * 
+     * @see ConsoleObserver#errorMsg(String)
+     */
+    @Override
+    public void errorMsg(String errMessage) {
+        out.print(errMessage);
+    }
+
+    /**
+     * <p>
+     * Prints the stacktrace of an exception to out if the log level is more or equally detailed to
+     * <code>Level.FINE</code>. Otherwise, it just prints a line naming the exception or only the
+     * message, if any.
+     * </p>
+     * 
+     * @see ConsoleObserver#logException(Exception)
+     */
+    @Override
+    public void logException(Exception e) {
+        if (traceLevel.intValue() > Level.FINE.intValue()) {
+            if (e.getMessage() != null) {
+                out.println(e.getMessage());
+            }
+            else {
+                out.println(e);
+            }
+        }
+        else {
+            e.printStackTrace(out);
+        }
+    }
+
+    /**
+     * <p>
+     * Prints messages to out. These message are only printed if the trace level is higher than the
+     * defined minimum.
+     * </p>
+     */
+    @Override
+    public void traceMsg(String traceMessage, Level level) {
+        if (level.intValue() >= traceLevel.intValue()) {
+            out.print("[" + level.toString() + "] [" + ft.format(new Date()) + "] " + traceMessage);
+        }
+    }
+}