Java

Problem description:The project runs on weblogic10. Every time I modify a classCodeWhen you access a page through the interceptor, an exception is reported:Java. Lang. classcastexception: COM. xxx cannot be cast to com. xxxThe logic is that the

Java coding comprehension keywords: Java coding, Unicode, getbytes () come from my notes: youdao note-Java coding understanding the coding involved in various programs is nothing more than the encoding of source code files, the encoding of the

The last post talked about the optimization of the garbage collector. After a long time, I didn't continue to talk about finalize (in fact, this is a bit of a problem with GC ). Today, let's take a look at the performance topics related to finalize

In the Java performance optimization series, memory management is a key factor of priority. When it comes to memory allocation, it will inevitably involve basic types and reference types. So today we will introduce the two types of their respective

Document directory HTML tags and JavaScript tutorial HTML tags and JavaScript tutorial Use Java to accurately calculate floating point numbers Question:What do we see if we compile and run the following program?Public class test {Public

1. Abstraction:Abstraction is to ignore those aspects irrelevant to the current target in a topic, so that you can pay more attention to the aspects related to the current target. Abstraction is not intended to understand all problemsBut only select

1. Use the singleton whenever possible The use of Singleton can reduce the load burden, shorten the loading time, and improve the loading efficiency, but not all of them are applicable to singleton. Simply put, the Singleton is applicable to the

Re: Ava. Io. invalidclassexception: local class incompatible: stream classdesFeb 29,200 8 AM (Reply 15 of 19)   My Java version is the 1.5.0 _ 14 and the value-3126998878902358585l comes from a solution that I read in a forum.

JVM After JVM is started, JVM sets some system attributes to indicate the default regions of JVM. User. Language, user. region, file. encoding, etc. You can use system. getproperties () to view all System Properties in detail. For example, in an

  I, Construction (builder) mode structure diagram The builder mode hides the product structure and product part construction process from the client, and separates the responsibility for directing the construction process from the responsibility

I have made some optimizations on the memory usage of the program recently, and have achieved good results. I have summarized some experiences. I believe it will be helpful for you to write high-quality programs. The following discussion is not

Recently, due to work requirements, a tool class for Excel operations is based on poi. Share with you. Package COM. shine. framework. core. office; import Java. io. fileinputstream; import Java. io. filenotfoundexception; import Java. io.

Recently, I participated in the Java development project. The development environment is myeclipse + weblogic. I also posted several posts to introduce some of the technologies used. How to use struct in a Java program to input multiple data records

Static inner section:  Package innerclass; public class outclass1 { Public int OID; Public String oname; Public static class innerstaticclass1 { Public int IID; Public String INAME; }} Package innerclass; Import innerclass.

Java Modeling Language (JML) is a symbolic language for detailed design. It encourages you to look at Java classes and methods in a brand new way. In this tutorial, Joe verzulli, a senior consultant for Java programming, will introduce this new tool

The Java Cryptography Extension is an important part of jdk1.4. Basically, it consists of some packages which form a framework and implement encryption, key Generation Algorithms, protocols, message authentication codes, and other algorithms. This

Recently, I was reading objective Java, where I talked about cloning, so today I want to study cloning.   We all know that there are two better ways to copy a corresponding one, one is serialization, and the other is cloning. It is convenient to use

Due to resource or network speed requirements, in mobile games or general web games, we hope to compress images to the maximum extent possible to save resources. Recently, my company also had a need for this project, so I spent a long time on the

Another product of the company, when monitoring CTI, the recording format is PCM.To play in IE, You need to convert it into a standard WAV. previously, I used a com library for conversion. Now I can't use that library for various reasons (64-bit

With the popularization of the concept of patterns, there are more and more programmers who understand patterns and use patterns. Many people may have the following question when learning patterns: "Is it necessary to make it so complicated ?".