+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.log4j.helpers;
+
+import java.util.Date;
+import java.text.FieldPosition;
+import java.text.ParsePosition;
+import java.text.DateFormat;
+
+/**
+ Formats a {@link Date} by printing the number of milliseconds
+ elapsed since construction of the format. This is the fastest
+ printing DateFormat in the package.
+
+ @author Ceki Gülcü
+
+ @since 0.7.5
+*/
+public class RelativeTimeDateFormat extends DateFormat {
+ private static final long serialVersionUID = 7055751607085611984L;
+
+
+ protected final long startTime;
+
+ public
+ RelativeTimeDateFormat() {
+ this.startTime = System.currentTimeMillis();
+ }
+
+ /**
+ Appends to <code>sbuf</code> the number of milliseconds elapsed
+ since the start of the application.
+
+ @since 0.7.5
+ */
+ public
+ StringBuffer format(Date date, StringBuffer sbuf,
+ FieldPosition fieldPosition) {
+ //System.err.println(":"+ date.getTime() + " - " + startTime);
+ return sbuf.append((date.getTime() - startTime));
+ }
+
+ /**
+ This method does not do anything but return <code>null</code>.
+ */
+ public
+ Date parse(java.lang.String s, ParsePosition pos) {
+ return null;
+ }
+}