java hello world tutorial

New Android project, then the default "Next" to complete the creation;2. Add a button3. Add the following red code to the SRC Mainactivity.javaImport android.support.v7.app.ActionBarActivity;Import Android.support.v7.app.ActionBar;Import android.support.v4.app.Fragment;Import android.content.Intent;Import Android.os.Bundle;Import Android.view.LayoutInflater;Import Android.view.Menu;Import Android.view.MenuItem;Import Android.view.View;Import Android.view.View.OnClickListener;Import Android.view.

The basic configuration of JUnit 4 is described here:Package Com.sun.junit4;public class T {//test this method public int add (int x, int y) {return x + y;}}Package Com.sun.test;import static Org.junit.assert.*;import Org.junit.test;public class Bbest {@Testpublic void Testadd () {fail ("not yet implemented");}}The Testadd () method Here is a test method for the T.java Add method, which modifies the code inside toPackage Com.sun.test;import static Org.junit.assert.*;import Org.junit.test;import

session = Sf.opensession (); Transaction ts=session.begintransaction (); Employee emp= (Employee) session.load (Employee.class, 2); Session.delete (EMP); Ts.commit ();} private static void Upempoyee () {Configuration cfg=new configuration (); Sessionfactory SF = cfg.configure ("Hibernate.cfg.xml"). Buildsessionfactory (); Session session = Sf.opensession (); Transaction ts= session.begintransaction (); Employee emp= (Employee) session.load (EmPloyee.class, 1); Emp.setname ("Usagi"); Ts.commit (

2.hello,java!Welcome to the world of Java, in the previous chapter, we have completed the basic DOS operation learning and Java Environment Building, in this chapter we Java to complete a simple DOS program.2.1

Hello world! (Hello, world!)"Hello, World", this is the most basic and simplest program in every computer programming language, and the first program we started writing to determine the compiler, program development environment, a

Helloclienthandler ());}); /Connect to local 8000port server Bootstrap.connect (New inetsocketaddress ("127.0.0.1", 8000));} private static class Helloclienthandler extends Simplechannelhandler {/** * triggers when bound to the server, prints "Hello World, I ' m client." * @alia Onecoder * @author lihzh */@Overridepublic void channelconnected (Channelhandlercontext ctx,channelstateevent e) {S Ystem.out.pr

If you don't know what Netty is, you can do something. That can be a simple search to find out. I can only say that Netty is a NIO framework that can be used to develop distributed Java programs. What can be done, you can try to play the imagination. Technology is to serve people and not to limit people.If you already have everything, let's start with a piece of code. Programmers are accustomed to the first step, nature is "

If you don't know what Netty is, you can do something. That can be a simple search to find Out. I can only say that Netty is a NIO framework that can be used to develop distributed Java Programs. What can be done, you can try to play the Imagination. Technology is to serve people and not to limit People.If you already have everything, let's start with a piece of code. Programmers are accustomed to the first step, nature is "

Helloclienthandler ());}); /Connect to local 8000port server Bootstrap.connect (New inetsocketaddress ("127.0.0.1", 8000));} private static class Helloclienthandler extends Simplechannelhandler {/** * triggers when bound to the server, prints "Hello World, I ' m client." * @alia Onecoder * @author lihzh */@Overridepublic void channelconnected (Channelhandlercontext ctx,channelstateevent e) {S Ystem.out.pr

#10 Do, 1 SUB #11 Do, 1 SUB #12 Do, 1 SUB #13 Please READ out, 1GIVE upIptscrae.===================================On ENTER {"Hello," "world!" SAY}. Java===================================Command line interface:Class Hello{public static void Main (String ars[]){System.out.print ("

! Eiffel Class Hello_world creation make feature be local io:basic_io do !! Io io.put_string ("%N Hello, world!") End--Make end- -Class Hello_world Erlang -module (hello). -export ([hello_world/0]). Hello_world ()-> io:fwrite ("Hello, world