public class DumpUse 
{
    static boolean OK = true;                   //static fields
    static int    num = 1;
    static String str = "Hello World";          
    
    public    boolean   yes  = true;            //instance fields
              double    num1 = 1;               
    protected double    num2;
    private   Double    num3 = 3.0;             //Wrapper class
    private   String    str1 = "xx";  
    public    String    str2 = "";
    private   String[] stuff = {"Sam","Bill",null,"Steve","Jim"};
    
    public static void main(String[] args) 
    {
        System.out.println();
        System.out.println("OK=> "  + Dump.content(OK)  + "\n");        //static field
        System.out.println("num=> " + Dump.content(num) + "\n");    
        System.out.println("str=> " + Dump.content(str) + "\n");    

        DumpUse d = new DumpUse();          //instantiate an object of this class

        System.out.println("num2=> "  + Dump.content(d.num1)  + "\n");  //instancefield
        System.out.println("num3=> "  + Dump.content(d.num2)  + "\n");  
        System.out.println("num4=> "  + Dump.content(d.num3)  + "\n");  
        System.out.println("str1=> "  + Dump.content(d.str1)  + "\n");  
        System.out.println("str2=> "  + Dump.content(d.str2)  + "\n");  
        System.out.println("stuff=> " + Dump.content(d.stuff) + "\n");  //instance array

        System.out.println("d obj=> " + Dump.content(d)       + "\n");  //the whole object
    }
}