Getting to know Java
Advantages and Features of Java
● Security
● Object-Oriented
● Portability
● High Performance
● Distributed
● Dynamic
● Multithreading
● Security
● Robustness
JDK, JRE, JVM
1.JDK: java development kit (java developer tool)
2.JRE: java runtime environment (java runtime environment)
3.JVM: java virtual machine (Java virtual machine)
Configuration of Java environment variables
Uninstall JDK
1. Click This Computer - Properties - Advanced System Settings - Environment Variables - View the installation location of JDK
2. Delete the JDK directory.
3. Delete Java-home in the environment variable.
4. Click on the path and then click Edit. 5. Delete the JDK
content in the path.
Command, enter Java -version to check