Java Starter System Tutorial (i) Configuring the Java Development environment

# # #配置JAVA开发环境 # #

1. Download and install the JDK

Download JDK (Java develop kit) Java SDK via www.oracle.com website

Install the downloaded JDK in a fool-friendly installation

Note: The installation path cannot have Chinese presence

2. Configure Environment variables

Right-click My Computer--Properties--Advanced system settings-environment variables

Under System variables, click New--Set variable named: Java_home---The variable value is the path to the installation JDK--confirm

under System variables, locate path and double-click Win10 under new (Win7 directly in front of the top input)%java_home %\bin --Confirm

3. Verify that the configuration is successful

Tap Keyboard win+r--Input cmd--input java-version

That means we've got it all together. Next we'll finish the first program "Hello World"

1) Create a new text under the path

2) Enter the main program of HelloWorld

Class helloworld{
public static void Main (string[] args) {
System.out.println ("Hello World");
}
}

After saving, change the extension to. java

4) Enter a disk in cmd: Set the path to that disk--CD just as we entered a good file path

5) Compile the program into class file by Javac

After compiling, A. class file with the extension will appear.

6) Execute the first program Hello World

Enter Java HelloWorld

Execution Complete ~

But we can't do that every time we develop this way, so we have to have a compiler

Here is the compiler used in our development process: Eclipse

With this software we can start our Java development journey.

Next time we'll explain how to use eclipse

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Introduction to Java Tutorial (ii) installation using Eclipse

Introduction to Java Tutorial (iii) Basic syntax (1)