End of Life
(1 upper and 1 lower alarm limit) Warning Limits: 2 individually programmable alarm limits (1 upper and 1 lower alarm limit) Alarm Time: 1 Minute to 23h 59min (alarm and/or warnings can be disabled) Temperature measurement interval: Every minute (Log interval 10 minutes) Accuracy of temperature measurement +/- 0.8°C from -40 to -30°C (+/-1. ±0.5°C (±1.0°F) Accuracy; Factory Pre-Set Alarms: 2°C and 8°C; 3 Year Non-Replaceable Battery; Visual and Audible Alarms; Electronic Signature on Files to Meet FDA 21 CFR Part 11; Includes a NIST traceable calibration certificate, compliant to ISO/IEC. To keep food at its perfect temperature, chilled or frozen, GE Appliances offers a range of refrigerators to fit your space. We provide the most innovative refrigerator technologies—our smart fridges can be monitored and send alerts from almost anywhere via our Smart HQ app and your mobile device. TextFridge1.2.0.app (5222 KB) Store text you often use (was TextOnTrays). SysDeep1.0.torrent (2662 KB) Examine system processes on your Mac.
On August 5, 2015 the Logging Services Project Management Committee announced that Log4j 1.x had reached end of life. For complete text of the announcement please see the Apache Blog. Users of Log4j 1 are recommended to upgrade to Apache Log4j 2.
Security Vulnerabilities
A security vulnerability, CVE-2019-17571 has been identified against Log4j 1. Log4j includes a SocketServer that accepts serialized log events and deserializes them without verifying whether the objects are allowed or not. This can provide an attack vector that can be expoited. Since Log4j 1 is no longer maintained this issue will not be fixed. Users are urged to upgrade to Log4j 2.
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Java Version Incompatibilities
The version detection algorithm changed in Java 9 which causes the MDC not to work properly. See Log4j 1.2 is broken on Java 9 for details.
Apache log4j™ 1.2
Welcome to Apache log4j, a logging library for Java. Apache log4j is an Apache Software Foundation Project and developed by a dedicated team of Committers of the Apache Software Foundation. For more info, please see The Apache Software Foundation. Apache log4j is also part of a project which is known as Apache Logging. Please see the License.
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Epub packager 1 4 – make books in epub format. If you are interested in the recent changes, visit our changes report.
Why logging?
Inserting log statements into your code is a low-tech method for debugging it. It may also be the only way because debuggers are not always available or applicable. This is often the case for distributed applications. Totalspaces 2 8 6 x 2.
On the other hand, some people argue that log statements pollute source code and decrease legibility. (We believe that the contrary is true). In the Java language where a preprocessor is not available, log statements increase the size of the code and reduce its speed, even when logging is turned off. Given that a reasonably sized application may contain thousands of log statements, speed is of particular importance.
Why log4j?
With log4j it is possible to enable logging at runtime without modifying the application binary. The log4j package is designed so that these statements can remain in shipped code without incurring a heavy performance cost. Logging behavior can be controlled by editing a configuration file, without touching the application binary.
Logging equips the developer with detailed context for application failures. On the other hand, testing provides quality assurance and confidence in the application. Logging and testing should not be confused. They are complementary. When logging is wisely used, it can prove to be an essential tool.
One of the distinctive features of log4j is the notion of inheritance in loggers. Using a logger hierarchy it is possible to control which log statements are output at arbitrarily fine granularity but also great ease. This helps to reduce the volume of logged output and the cost of logging.
The target of the log output can be a file, an OutputStream, a java.io.Writer, a remote log4j server, a remote Unix Syslog daemon, or many other output targets.
Performance
On an AMD Duron clocked at 800Mhz running JDK 1.3.1, it costs about 5 nanoseconds to determine if a logging statement should be logged or not. Actual logging is also quite fast, ranging from 21 microseconds using the SimpleLayout, 37 microseconds using the TTCCLayout. The performance of the PatternLayout is almost as good as the dedicated layouts, except that it is much more flexible.
Download Apache log4j 1.2.17
Apache log4j 1.2.17 is distributed under the Apache License, version 2.0.
The link in the Mirrors column should display a list of available mirrors with a default selection based on your inferred location. If you do not see that page, try a different browser. The checksum and signature are links to the originals on the main distribution server.
Mirrors | Checksum | Signature | |
Apache log4j 1.2.17 (tar.gz) | log4j-1.2.17.tar.gz | log4j-1.2.17.tar.gz.md5 | log4j-1.2.17.tar.gz.asc |
Apache log4j 1.2.17 (zip) | log4j-1.2.17.zip | log4j-1.2.17.zip.md5 | log4j-1.2.17.zip.asc |
It is essential that you verify the integrity of the downloaded files using the PGP or MD5 signatures. Please read Verifying Apache HTTP Server Releases for more information on why you should verify our releases.
The PGP signatures can be verified using PGP or GPG. First download the KEYS as well as the asc signature file for the relevant distribution. Make sure you get these files from the main distribution directory, rather than from a mirror. Then verify the signatures using
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Apache log4j 1.2.17 is signed by Christian Grobmeier 42196CA8
Alternatively, you can verify the MD5 signature on the files. A unix program called md5 or md5sum is included in many unix distributions.
Previous Releases
All previous releases of Apache log4j can be found in the archive repository.