Java Fundamentals Chapter I (Install configuration Java, simple DOS command)

First, install the configuration Java

Download installation

1.java Download jdk (32-bit or 64-bit depending on your computer).

2. Double-click the Jdk.exe file to install.

environment variable configuration

Right-click My Computer-Properties-Advanced system settings-environment variables-Find PATH variable-Enter the path of the bin in the Java file at the front of the path variable--and then find the CLASSPATH variable at the front of the English ".;

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5. Finally click Confirm to complete the Java configuration.

6. Enter Javac at the command prompt to see if the configuration was successful.

The display is configured successfully.

Second, Java Common DOS command

1.dir no parameters to view the files and folders of the current directory.

2.CD Directory name to enter a specific directory.

3.cd\, go back to the root directory.

4.cd.., return to the previous level of the directory.

5.MD directory name to create a specific folder.

6.RD directory name, delete the specific folder.

7.cls, clear the screen.

8.del filename, delete a file.

9.del * *, delete all files under the current file.

Java Fundamentals Chapter I (Install configuration Java, simple DOS command)