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The difference between the operation of Linux and Windows
The operation of Windows is first through the graphical interface and then through the background to generate commands to the operating system
. Linux is to directly operate the commands to the operating system
. The structure of Windows is >> drive letter >> clip
The structure of Linux is >> clip
Download and installation of Linux
1. First install the VM program from
Then download the image file of centOS7 on the Internet
2. Create a new virtual machine in vm and configure the configuration of the virtual machine
Directory Structure of CentOS Linux
Linux commands
Linux JDK download and installation
1. Obtain the download path of JDK on the official website of Oracle Corporation
2. Download from the wget command of Linux
3. Unzip the file by tar -zvx-f filename
JDK environment configuration
Writing Java code in Linux
Java syntax rules
1. The grammatical structure of Java is the same as C\C++ 2. Java is case-
sensitive
3. Parentheses appear in pairs
4. Each code must end with a semicolon
5. A Java file can contain multiple classes but only There is a class decorated with public and must be the same as the Java file name. The compiled file is named after the text after your class