The String.valueof(Object) method uses the output from Object.ToString()

The default behavior of this method is:

getClass().getName() + '@' + Integer.toHexString(hashCode())

All this is from the Java 1.4.2 documentation. I advise that you
download it. Sun has provided some of the most complete documentation
I have ever seen.

test code:

public class ValueTest{
int i;
String s;

ValueTest(){
i = 3;
s = "test";
}

public static void main(String[] args){
ValueTest t = new ValueTest();

System.out.println(String.valueOf(t));
System.out.println(t.toString());
}
}

Sorry, forgot to mention that if you want a different behavior, just
override the toString method in your class.

thanks, i have tested it both way....its giving me the result as
expected.

valueOf() is used to convert all the data types into
strings.toString() is used to convert objects into
strings.If u pass a object  into valueOf() methos it
internally calls toString() method.
hope i clarified atleast some of ur doubts

I dont know what you want to do, but to convert object  to String, just do
this:
Ojbect[] varobject = {"First String", new Integer(1000), new
Double(100.55)};
String test  = (String)varobject[0];

In your case:
sample p = new sample(12,45.60,"test");
String x = String.valueOf(p.x);
String y = String.valueOf(p.y);
String s = p.s;