face recognition using java

the thread pool (thread pool)?A: In object-oriented programming, it takes time to create and destroy objects because you create an object to acquire memory resources or other resources. More so in Java, virtual machines will attempt to track each object so that it can be garbage collected after the object is destroyed. Therefore, one of the means to improve the efficiency of the service process is to minimize the number of objects created and destroy

Java Advanced programmer face test 1. What do you think is the most important process in the project? Try to identify progress priorities in the analysis and design phase 2. If you give a team of 4-6 people, how to assign. Pick a technically competent person as my substitute. Others distribute tasks evenly, perform a comprehensive task assignment every week, and each person receives a week's work and repor

How the ClassLoader unloads bytecode The difference between IO and NIO, NIO benefits Java thread Pool Implementation principle, KeepAliveTime parameters such as the role. HTTP connection Pooling Implementation principle Database connection pooling Implementation principles How the database is implemented Technical framework See what open source framework of source code What are the pros and cons of

message queue identifiers. Message Queuing overcomes the disadvantages of less signal transmission information, only unformatted byte stream, and limited buffer size. Shared storage sharedmemory: Shared memory is the mapping of memory that can be accessed by other processes, which is created by a process, but can be accessed by multiple processes. Shared memory is the fastest IPC approach and is specifically designed for low-efficiency operation of other interprocess communication modes. It

This article mainly for everyone to organize Java common face test questions for your reference, the specific contents are as follows 1. The difference between sleep and wait in Java ① the two methods come from different classes, sleep comes from the thread class, and wait comes from the object class.Sleep is the static class method of thread, who calls who goe

implementation), they all complete the map interface, the main difference is that the HASHMAP allows null (NULL) key value (key), because of non-thread security, in the case of only one thread access, More efficient than Hashtable.HashMap allows NULL to be used as a entry key or value, and Hashtable is not allowed.HashMap hashtable contains method removed, changed to Containsvalue and ContainsKey. Because the contains method is easy to cause misunderstanding.Hashtable inherits from the dictiona

kind of request forwarding, when a single hyperlink, the browser's address bar will appear the current request address, if the server-side response is completed, found that the address bar address changed, it is proved that the indirect request forwarding. Conversely, if the address does not change, it represents a direct request forward or no forwarding.Q: What are the principles and differences between direct forwarding and indirect forwarding?A: Forward and redirect represent two kinds of re

http://www.ibm.com/developerworks/cn/java/j-lo-compose/index.htmlimplementing modular parser with Java Sun Yu, DengIntroduction: Ward Cunningham once said that clean code clearly expresses what the code writer wants to express, while graceful code goes further, and beautiful code looks like it's a problem to be solved. In this article, we will show the design and implementation of a modular parser, the fina

) receiver.receive(); r_session.commit(); // output message text String body = r_msg.getText(); System.out.println("message was '"+body+"'"); ..}} Create call SPEC:create or replace procedure jmsproc (t1 IN VARCHAR) as language java name 'jmsSample.main (java.lang.String[])';/ Call the stored procedure:call jmsproc('hello'); Database-assisted Web Publishing (cache failure) A common problem that application structures must

understanding of the learning content. 5. test the system. It mainly includes exercise questions and test questions for chapters or topics, and is used to check students' self-check on their basic knowledge and skills, including objective questions and subjective questions. answers can be given to objective questions, the subjective questions can provide reference answers or ideas. Web courseware design methods and technologies The general idea is to divide the courseware design method into two

to use. The bean is then referenced by name (Tempsensor). Spring uses a mechanism that creates the object and associates it with other objects based on the description of the Simplesensor.xml file. It is used to inject dependencies--in this case, instantiate the Rs232adapter object and associate it with the Temperaturesensor object by passing it as a parameter to the Sensordelegate () method. In comparison, it is not difficult to accomplish this task using