SQL - Introduction

Java is a programming language (♦ see DEF) multiplatform and object oriented, created in 1995. The Oracle company owns the Java technology, after having bought it from Sun Microsystems.

Java allows you to create, among other things, Web App. and websites, software and games .

→ Let's start with very simple codes. The more you progress, page after page, the more sophisticated the scripts will be. However, you must go over 30 to 40 pages per level, before moving on to the next step...

→ In order to evaluate your codes, click on the icon on the left at the bottom of the page (gears), then choose a compiler from the list that will be open in another tab. Finally, test your work.

NOW REPRODUCE AND IMMERSE YOURSELF!

public class Main {
  public static void main(String[] args) {
    System.out.println("Hello World !");
  }
}

public class Main {
  public static void main(String[] args) {
    String name = "John";
    System.out.println(name);
  }
}

public class Main {
  public static void main(String[] args) {
    int myNum = 10;               // Integer
    float myFloatNum = 3.99f;    // Floating point
    char myLetter = 'F';         // Character
    boolean myBool = true;       // Boolean
    String myText = "Bonjour tout le monde !";     // String
    System.out.println(myNum);
    System.out.println(myFloatNum);
    System.out.println(myLetter);
    System.out.println(myBool);
    System.out.println(myText);
  }
}

public class Main {
  public static void main(String[] args) {
    int x = 60;
    int y = 28;
    if (x > y) {
      System.out.println("x is bigger than y");
    }  
  }
}

public class Main {
  public static void main(String[] args) {
    int myNum;
    myNum = 45;
    System.out.println(myNum);
  }
}

public class Main {
  public static void main(String[] args) {
    int myNum = 25;
    myNum = 45;
    System.out.println(myNum);
  }
}

public class Main {
  public static void main(String[] args) {
    int myNum = 68;               // integer (whole number)
    float myFloatNum = 10.45f;    // floating point number
    char myLetter = 'J';         // character
    boolean myBool = false;       // boolean
    String myText = "Good day";     // String    
    System.out.println(myNum);
    System.out.println(myFloatNum);
    System.out.println(myLetter);
    System.out.println(myBool);
    System.out.println(myText);
  }
}

public class Main {
  public static void main(String[] args) {
    boolean iloveprogramming= true;
    boolean iloveworkingduringthenight = false;    
    System.out.println(iloveprogramming);
    System.out.println(iloveworkingduringthenight);
  }
}