Getting started with getting started with Java--JDK

Baidu has a lot of tutorials on how to get started with JDK, but most of them are less detailed and not systematic. Share the JDK download, environment configuration, and how to use it below.

Install the JDK first, in general, the installation directory is the C-drive program (x86) directory.

The next most important part: Configuring the Environment

1. Right-click My Computer-Properties-Advanced system Settings-advanced-environment variables--Find the path in the system variable (if no new directory is selected)

2. If there is already an item in path, add it after the project; If you do not skip this step, click New directly under the WIN10 system

3. Locate the JDK installation directory in My computer and locate it in the Bin folder, and copy the location.

4. Paste the position in the value of the variable in path

In general, the configuration is successful, let's test

Windows+r Start Run

Input cmd boot dos

Enter JAVAC in the DOS interface

If a lot of configuration information appears, the configuration is successful

Conversely, if a word such as an invalid command appears, the configuration does not succeed

So after the configuration is successful, how do you write the program next?

We're going to use a software that has a few people on every computer--notepad.

Use Notepad to write a simple program, general beginners with HelloWorld

As follows:

Save as Helloworld.java file type for all files

Then start the DOS command

Enter the save location after the CD with the text you just added

Then enter Javac Helloworld,java

Continue entering Java without errors. HelloWorld

And then enter

Hello World appears

That's when the build was successful.

Getting started with getting started with Java--JDK