java.util.logging.SimpleFormatter Maven / Gradle / Ivy
/*
* 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 java.util.logging;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.text.MessageFormat;
import java.util.Date;
import libcore.io.IoUtils;
/**
* {@code SimpleFormatter} can be used to print a summary of the information
* contained in a {@code LogRecord} object in a human readable format.
*/
public class SimpleFormatter extends Formatter {
/**
* Constructs a new {@code SimpleFormatter}.
*/
public SimpleFormatter() {
}
/**
* Converts a {@link LogRecord} object into a human readable string
* representation.
*
* @param r
* the log record to be formatted into a string.
* @return the formatted string.
*/
@Override
public String format(LogRecord r) {
StringBuilder sb = new StringBuilder();
sb.append(MessageFormat.format("{0, date} {0, time} ",
new Object[] { new Date(r.getMillis()) }));
sb.append(r.getSourceClassName()).append(" ");
sb.append(r.getSourceMethodName()).append(System.lineSeparator());
sb.append(r.getLevel().getName()).append(": ");
sb.append(formatMessage(r)).append(System.lineSeparator());
if (r.getThrown() != null) {
sb.append("Throwable occurred: ");
Throwable t = r.getThrown();
PrintWriter pw = null;
try {
StringWriter sw = new StringWriter();
pw = new PrintWriter(sw);
t.printStackTrace(pw);
sb.append(sw.toString());
} finally {
IoUtils.closeQuietly(pw);
}
}
return sb.toString();
}
}