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Part Two


Welcome to the beginner Java tutorial, this is the landing page for part two. I ask if you are new to programming and/or Java for that matter, please go in order to reduce possible confusion.




Preface


We will be learning about Boolean Logic, and Comparison Operators in this part. We will be using this block of Java code for this part.

public class JavaIntro2 {                        //This creates the "class", for now think of each class like a document or file
    public static void main(String args[]) {    //This line lets Java know what to run when you click execute below
      boolean b1 = true;                        //boolean variables can only hold true or false
      boolean b2 = false;

      System.out.println("AND: b1 && b2: " + (b1 && b2));     //&& is AND, only when both values are true is && true
      System.out.println("OR: b1 || b2: " + (b1 || b2));        //|| is OR, when either value is true || is true
      System.out.println("NOT: !b1: " + !b1);                   //! is NOT, ! changes true to false, or false to true
      
      int x = 10;
      int y = 20;
      
      System.out.println("x < y: " + (x < y));                  //<, >, and == are comparison operators, they result in booleans
      System.out.println("x > y: " + (x > y));                  //<=, >=, and != are also comparison operators, what do they do?
      System.out.println("x == y: " + (x == y));
      
    }                                           //End of main
}                                               //End of JavaIntro2




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