
If the SDK is popular, select the jdk installation directory
Click onjdk installation and environment variable configurationRemember where you installed jdk
Then click Next
Then click Next

Name the project Hello or other names in the first line
On the second line, click on the far right...Select the file address of the project
Click finish
The pop-up prompt box click close
Expand test1 right click src

Enter the class name and press Enter
Enter psvm and press Enter

Type sout and press enter
Click the green triangle to run

Operating normally.
Other projects can be developed.
Eclipse development File-> New-> Java Project, in the prompt box, enter the Project Name, such as Hello, then next, finnsh. Hello will appear in the directory project, as shown below Right-src, ...
No matter what language to learn, write the first program should start from Hello World. Although only a few simple lines of code, but just learning Java as a rookie, when I see myself writing program...
Note: The class name must be consistent with the file name. ...
Hello World Create a new folder to store the code In the folder below to create a new suffix .java java files, such as HelloWorld.java [Note To open the display system extension] [Note to write code c...
** The first program "Hello World" **...
Description: The first Java program. Create a folder to store the code. Open cmd, right click "Properties" to open cmd settings. Write fileHello.java Compilejavac Hello.java, Generate class ...
The first Java program: Hello World! Create a new folder to store the code Create a new java file The file extension is .java Hello.java [Note] The system may not display the suffix name, you need to ...
A code Three problems (the following figure reports an error, you need to set the classpath directory)...
My first Java program - Hello World Code Class is a keyword for defining a class. In Java, the class can be seen as a program, all code needs to write in the class. HelloWorld class name, Class and cl...
note: 1. The class name is the same as the file name. 2, {} must match. Preferably, when entering, simultaneously entering the code in {}. 3, pay attention to the difference between case. 4. Output ch...