Espressioni 5

... x='a';

... x="b";

... x='a'+"b";

... x='a'+'b';

String s1="Alfa",
       s2=new String(s1),
       s3=s1.toUpperCase(),
       s4=s1.substring(1),
       s5=s1.substring(1, 2);
char   c =s.charAt(1);

String  s1="alfa",
        s2="Alfa";
boolean b1=s1==s1,
        b2=s1==s2,
        b3=s1.equals(s1),
        b4=s1.equals(s2),
        b5=s1.equalsIgnoreCase(s2);

int    a=123;
String s="";
while(a != 0)
{
   s=(a%10)+" "+s;
   a=(a/10);
}

int    a=123;
String s="";
while(a != 0)
{
   s=s+" "+(a%10);
   a=(a/10);
}