cool java programs

A simple addition, subtraction, multiplication, division, automatic generation of small programs (JAVA), addition, subtraction, multiplication, division, and java When I was studying software engineering, I encountered such a problem. When a programmer's son went to the second grade of elementary school, the teacher asked the parents to give 30 questions to the s

Edit compiled multiplication table under Linux print out (Java Basics exercise)[Email protected] chengxu]# VI Test.javapublic class test{public static void Main (String args[]) {for (int i=0;ifor (int J =1;jSystem.out.print (j+ "*" +i+ "=" +i*j+ "");}System.out.println ();}}}[Email protected] chengxu]# Javac Test.java[[Email protected] chengxu]# java test1*1=11*2=2 2*2=41*3=3 2*3=6 3*3=91*4=4 2*4=8 3*4=12 4

else's PC and click on the Kailugaji.exe file to run it without installing the JRE file.Four, packaged into the installation package program, like a small software, can be installed anywhere on the machine to run:1. Open Inno Setup Compiler2.3.4. Determination of the way5. In the "WRR" folder just generated an output folder, there is a Setup.exe file, which is successful, so that you can install the Setup.exe on any PC to execute.6. Copy the Setup.exe file to another PC that does not have the J

First, in Eclipse, the Java program is made into a runnable jar package1. Simply package the SRC directory and the third-party jar in the Lib directory　　2. After selecting these two positions, "next", then "Finish", generate the Jar package3. Build a ZIP package for the project structureThen, the project into a zip package, note that only the required program directory structure and configuration folder can be4. Click "Finish" to complete the ZIP pack

The first step: Modify the hidden file extension in the folder, so that its file extension display all;The second step: Create a new text file in the folder and change its Extension property to the Hello.java file name extension;The third step: right-click Open mode with txt text openFourth step; Write code:Class Hello{public static void Main (String [] args){System.out.println ("Hello World");System.out.println ("Hello World");System.out.println ("Hello World");System.out.println ("Hello World"

running Tomcat under the console window;7. Test the above configured services and run the C: \ Myservapp\bin\installmyapp-nt.bat will install your application (here, nioblockingserver) into the WIN32 system service.8. Open Control Panel-hypervisor-services, see NiO nonblocking server is already in system service, and other usage is the same as the familiar Windows service.Tomcat uses Java service wrapper mode two, which requires minor changes to exis

=1;i8 // {9 // //generates a random number that represents the ASCII of the A~zTen //int intvalue = (int) (Math.random () *26+97); One // //Converts this random number to its corresponding letter and connects to the back of STR A //str = str + (char) intvalue; - // } - // } the - Public Static voidMain (string[] args) { - //generates a 6-bit random string of lowercase letters - intWeishu=6; +String str = ""; - for(inti=1;i) +

Program Summary IKVM. NET is a MonoAnd the Java implementation of the Microsoft. NET Framework, designed to run Java programs on the. NET platform. This article will give a more detailed introduction to the rationale of the tool, how to get started with Java applications. NET application and how to develop it in

The biggest advantage of writing applications in the Java language is "compile once, run everywhere", but this is not to say that all Java programs have cross-platform features, and in fact, quite a few Java programs do not operate correctly on other operating systems. So ho

(James·Gaussian forest)Arthur Van Hoff(Arthur·where·Hof)Andy Bechtolsheim(Andy·Bectock), or"Just another Vague acronym"(just another vague abbreviation). There is also a more credible argument is that the name is out of the love of coffee, so toJavacoffee to name it. The first four bytes of a class file, if read in hexadecimal, areCA FE BA be, it will spell two words"CAFE BABE"(coffee baby). 1994yearsTenmonths,HotJavaand theJavaPlatform for the company's high-level demonstration. 1994years,

Java is across-platform, interpreted languageJava Source Code compilation Intermediate "bytecode" is stored in the class file. A class file is an intermediate code in the form of a bytecode that includes a lot of source code information, such as variable names, method names, and so on. Therefore, the anti-compilation of the Java intermediate code becomes very easy. There are many free, commercially availabl

command: javac [options] [SourceFiles] [classes] [@argfiles] Compiler for Javac:java languages, compiling Java source files using the command line, output bytecode files. class. Sourcefiles:java the relative path of the source file. Options: Here is the-D, directory shorthand, which represents the location of the output bytecode, "." Represents the current directory, "..." Represents the parent directory, ".. \ bin "represents the si

Notes for compiling cross-platform Java programs-general Linux technology-Linux programming and kernel information. For details, refer to the following. The biggest advantage of using Java to write an application is "one-time compilation and running everywhere". However, this does not mean that all Java

How to Use jdb to debug Android Java programs When I get used to GDB, I always feel that eclipse is too bloated and uncomfortable. See Li Xijing wrote an article "using jdb/jdbshell debugging Android program" (http://www.limodev.cn/blog/archives/1281), with the next, feel more comfortable than eclipse. Jdb commands are so awkward. I wrote a jdbshell and added the command history and alias (several common gd

Programming experience: Notes for compiling cross-platform Java programs-general Linux technology-Linux programming and kernel information. The following is a detailed description. The biggest advantage of using Java to write an application is "one-time compilation and running everywhere". However, this does not mean that all

--- From the computer world daily (Wen/Huang Jian)---- The biggest advantage of using Java to write an application is "one-time compilation and running everywhere". However, this does not mean that all Java programs have cross-platform features. In fact, A considerable number of Java

Parallel programming is more prevalent when CPUs are in the multi-core era, but writing parallel programs is more prone to error. During the development process, an engineer can notice that the same program is correct in a single-threaded run, but it can be wrong in multiple threads. The causes of the errors associated with parallelism are often obscure, and in a single test, their appearance is highly random. Because multiple threads in a program may

Java implements dual daemon and Linux daemon for linux server programs I. IntroductionMany of the current server-side programs are developed based on Java. For Socket programs developed for Java, You need to manually restart the s

Program Writing cross-platform Java program considerations The biggest advantage of writing an application in the Java language is "compile once, run everywhere," but that's not to say that all Java programs have cross-platform features, and in fact, quite a bit of Java

Java Memory leakage is not a new topic. Jim Patrick wrote this article as early as 2001. However, this does not mean that Java Memory leakage is an outdated or even unimportant topic. On the contrary, Java Memory leakage should be a must for every programmer concerned about program robustness and high performance.This article will reveal when to pay attention to