JAVA introductory system tutorial (1) Configuring JAVA development environment

Configuring the JAVA development environment

1. Download and install the JDKDownload the JDK through the www.oracle.com

website ( Java develop kit) JAVA development kit

Install the downloaded jdk in a fool-proof way

Note: The installation path cannot contain Chinese characters

2. Configure environment variables

Right-click My Computer--> Properties --> Advanced system settings--> Environment variables

##Click New under System Variables--> Set the variable name: JAVA_HOME --> The variable value is the path where the JDK is installed --> Confirm

## in Find Path under System Variables and double-click --> Click New under win10 (enter directly at the front under win7) %JAVA_HOME%\bin --> Confirm

3. Verify whether the configuration is successful

Click on the keyboard win R --> Enter cmd --> Enter java -version

##This means that we have successfully matched it. Next, let’s complete 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 certain disk in cmd: Set the path to the disk --> cd The file we just entered Path

5) Use javac to compile the program into a class file

After compilation, a file with a .class extension will appear

6) Execute the first program hello world

Enter java helloworld

##Execution completed~

But we cannot execute code in this way every time we develop, so we must have a compiler

The compiler used in our development process is: eclipse

With this software we can start our java development journey

We will explain it first next time How to use eclipse

#END

Related articles:

JAVA entry system tutorial (2) Installing and using eclipse

JAVA entry system tutorial (3) Basic syntax (1)

The above is the detailed content of JAVA introductory system tutorial (1) Configuring JAVA development environment. For more information, please follow other related articles on the PHP Chinese website!