java perf tool

Java command line program build tool-airline In the past, I used to develop Java command line programs. I had a lot of trouble parsing parameters and some help information, today, when studying the interface test, I accidentally discovered a tool that allows you to quickly build a command line program. Github address

and consumes the license (the license becomes unavailable) and, if the license is unavailable, is blocked.The Unpark () method, in turn, makes a license available.This feature makes it possible for the next park () operation to return immediately, even if the Unpark () operation occurs before Park (). This is why the above example code ended successfully.At the same time, the park () suspended thread will not be as suspend () as the thread state Runnable,park () will explicitly give the waiting

The Apache Toolkit Common-lang has a very useful tool class for handling strings, one of which is stringescapeutils, a tool class that is added to the 2.3 version above, and it can be easily html,xml with The escape and reversal semantics of Java, but also the key string can be processed to prevent SQL injection, but it seems like common-lang3.0 after I looked li

Creation ReasonThe simplified conversion of Chinese is a very common requirement.But a lot of tool classes are simply mapping. (Use Map, collection, properties) and so on.There is a serious problem: there may be a problem with the conversion of special phrases .OpenccOPENCC is a very good conversion tool. However, there are no direct Java-friendly jars available.

or decrement a time field Get (Intfield) Returns the value of the given Calendar field getactualmaximum (Intfield) Returns the current maximum value for a given time field getactualminimum (Intfield) Returns the current minimum value for a given time field getinstance () Returns a calendar instance. Because the calendar is an abstract class and cannot be instantiated, you can only get an instance of it by using this method getTime () Return

Directory location in the project under the tool class:1. Chinese into pinyin, initials, Chinesechartopinyin, when using this class must be added Pinyin.jar,pinyin.jar has been placed in the Hqhop-framework-web project Lib directory;How to use:The Chinesechartopinyin provides only two methods:public static string Getpinyin (String src) {...} Convert Chinese characters to full spellpublic static string Getpinyinheadchar (String str) {...} Extract the f

In Java, the Jsonobject and Jsonarray base classes are provided in the Json-lib-2.3-jdk15.jar package for JSON serialization and deserialization operations. But we are more accustomed to encapsulating it further and achieving better reuse.The encapsulated JSON tool class Jsonutils.java code is as follows:Jsonutils Code, click ExpandImport java.util.ArrayList;Import java.util.Collection;Import Java.util.Hash

Tags: upd dstat void jdb Java Tool class successful cat code offJdbcutils class: 1. Create a private property * (four variables necessary to connect to the database): Dreiver URL user password 2. Privatize the constructor 3. Write the registration drive to a static block of code 4. The outside world can only get the database connection by invoking the static method of the

JconsoleStarts a graphical console that lets you monitor and manage Java applications.SynopsisJconsole [ Options ] [Connection ...]Options The command-line options. See Options. Connection = PID |Host:port | Jmxurl The pid value is the process ID of a local Java Virtual machine (JVM). The JVM must is running with the same user ID as the user ID running the jcons

This seat has previously published an articleArticle: Log cutting and cleaning tools implemented in Java are heavily reproduced on the Network (although most of them do not indicate the source of the original article ^_^ ). There are a lot of official comments to this seat, hoping to provide toolsSource code. Therefore, this seat does not dare to copy itself, and now the sourceCodeShare it for your study and exchange. If you have less time, please ste

Factors to consider:1. A simple convention is better than the configuration of the same Name property copy2. Nested Properties Copy3.flattern (flat) support, to support the N-layer structure of the copy to a layer of structure.4. PerformanceHere's a page that mentions a lot of tools.Http://stackoverflow.com/questions/1432764/any-tool-for-java-object-to-object-mappingNote that many tools use static

Java concurrency and multithreading 4: Use the universal synchronization tool CountDownLatch to implement thread waitingCountDownLatch, a synchronization helper class that allows one or more threads to wait until a group of operations are being performed in another thread.Initialize CountDownLatch with the given count. Because the countDown () method is called, The await method will be blocked until the cur