public class BasiJava{
	public static void main(String[] args){
/*	    System.out.println("Hello world!");
	
	    //Utilizzo metodi statici ed overload
            System.out.println("Hello world!".toUpperCase()); 
 	    System.out.println("Hello World".indexOf("llo",0));

	    //Passaggio dei parametri
     	    System.out.println("ja".toUpperCase().concat("va".toUpperCase()));
            System.out.println("ja".concat("v").concat("a").toUpperCase());
		
	    //Metodi statici e non statici
     	    System.out.println(Math.max(5,6));
            System.out.println("test".toUpperCase());

	    //Variabili	
	    System.out.println("ultima lettera di john: "+ "john".charAt("john".length()-1));
	    String nome = "John";
	    System.out.println("ultima lettera di nome: "+ nome.charAt(nome.length()-1));

       	    System.out.println("john maiuscolo: "+ "john".toUpperCase());
	    System.out.println("john maiuscolo: "+ "john".toUpperCase());

	    nome = "john".toUpperCase();
            System.out.println("nome: "+ nome);
	    System.out.println("nome: "+ nome);

	    //Manipolazione di stringhe
            String s = "ciao";
            String t = s;
            String v = new String("ciao");
            System.out.println("s: "+s);
	    System.out.println("t: "+t);
	    System.out.println("v: "+v);
*/
	    //Oggetti immutabili
	    System.out.println("Oggetti Immutabili");	
            String s1 = "ciao";
            System.out.println("s1 maiuscolo: " + s1.toUpperCase());
            System.out.println("s1 maiuscolo: " + s1);	

	    //Oggetti mutabili
	    System.out.println("Oggetti Mutabili");	
	    StringBuffer sb = new StringBuffer("ciao");
            System.out.println("sb con !: "+sb.append("!"));
            System.out.println("sb :"+sb);
   
            //side effect
	    System.out.println("Oggetti Mutabili: Side Effect ");	
	    StringBuffer sb1 = new StringBuffer("ciao");
            StringBuffer sb2 = sb1;
            sb1.append("!");
            System.out.println("sb1: "+sb1);
            System.out.println("sb2: "+sb2);

	    System.out.println("Oggetti Mutabili: Side Effect ");
	    StringBuffer sbSafe1 = new StringBuffer("ciao");
            StringBuffer sbSafe2 = new StringBuffer(sbSafe1);;
            sbSafe1.append("!");
            System.out.println("sb safe 1: "+sbSafe1);
            System.out.println("sb safe 2: "+sbSafe2);



	}
}