Java_Notes

Java practice notes

History:

• CREATORS > James Gosling, Mike Sheridan, and Patrick Naughton
  
• TIME OF ORIGIN > June 1991
  
• STABLE RELEASE > Java SE 14 / March 17, 2020; 56 days ago
  
• DEVELOPERS > Sun Microsystems
  

Description:

• TYPING DISCIPLINE > Static, strong, safe, nominative, manifest
  
• PARADIGM > Multi-paradigm: generic, object-oriented (class-based), imperative, reflective
  
• FILE NAME EXTENSIONS > .java, .class, .jar
  
• WEBSITE > oracle.com/java/
  

Installation for Ubuntu Linux:

NOTE: Prior to any step of installation, update the package index -

            sudo apt update    

• Java Runtime Environment (JRE) >
  

  • To check if its already installed (version check) -

          java -version    
    

  • If Java is not currently installed -

          sudo apt install default-jre  
    

• Java Development Kit (JDK) >
  

  • To check if its already installed (version check) -

          javac -version    
    

  • If Java is not currently installed -

          sudo apt install default-jdk
    

References/Sources:

• Mosh Hamedani YouTube
  
• tutorialspoint
  
• javaTpoint
  
• w3schools