learn and dive deep in Java Course. Wrapper Classes lecture

Main.java

public class Main {
  public static void main(String[] args) {


      System.out.println("byte min : " + Byte.MIN_VALUE + ", byte max : " + Byte.MAX_VALUE );
      System.out.println("short min : " + Short.MIN_VALUE + ", short max : " + Short.MAX_VALUE );
      System.out.println("integer min : " + Integer.MIN_VALUE + ", integer max : " + Integer.MAX_VALUE );
      System.out.println("long min : " + Long.MIN_VALUE + ", long max : " + Long.MAX_VALUE );

      System.out.println("float min : " + Float.MIN_VALUE + ", float max : " + Float.MAX_VALUE );
      System.out.println("double min : " + Double.MIN_VALUE + ", double max : " + Double.MAX_VALUE );



    String stringNumber = "5";
    String stringNumber2 = "5";
    System.out.println(stringNumber + stringNumber2);

    int num1 = Integer.parseInt(stringNumber);
    int num2 = Integer.parseInt("6");
    System.out.println(num1 + num2);

    // boxing
    Integer x = 5;
    Integer b = Integer.valueOf(5);

    // unboxing
    int d = b;
    d = b.intValue();
  }
}