Cum folosim variabilele in Java ?

public class Application {

public static void main(String[] args) {
    int myNumber = 88;
    short myShort = 847;
    long myLong = 9797;

    double myDouble = 7.3243;
    float myFloat = 324.3f;

    char myChar = 'y';
    boolean myBoolean = false;

    byte myByte = 127;


    System.out.println(myNumber);
    System.out.println(myShort);
    System.out.println(myLong);
    System.out.println(myDouble);
    System.out.println(myFloat);
    System.out.println(myChar);
    System.out.println(myBoolean);
    System.out.println(myByte);

  }
}
Output is:
88
847
9797
7.3243
324.3
y
false
127