A toString() is an in-built method in Java that returns the value given to it in string format. Hence, any object that this method is applied on, will then be returned as a string object.

All classes have a toString method. Its purpose is to return a String representing the data of the object.

The toString method is called automatically (implicitly) when an object reference is used with the print or println  methods.

 How to Use toString method

class Student

{ 

                int id; 

                String name; 

                String dept; 

                public String toString()  

                {

                              return id+" "+name+" "+dept; 

               } 

}