public static void main() {
    String name;
   
   // System.out.print(name);   // will crash - name not initialized
    String name2 ="";
    System.out.println(name2);
    System.out.print(name2.length());
    String name3= " ";
    System.out.println(name3.length());
    String name4 = new String("Joe");
    System.out.println(name4);

}