mismatch in printing the value of a variable

[Rajat Bhatnagar]

i have a simple class Gertude in which i have a private variable number of type int.

I access this variable by getter and setter methods.

initially i set the value of this number to 100 by saying gerry.setNumber(100);and print it back by System.out.println(gerry.getNumber()) where gerry is a Gerude object.

Everything runs fine till here

But When I try printing the value of this gertude variable
by saying (new Gertude()).getNumber() it always comes to 0

I cant understand as to why this mismatch is happening

My code is

 
class Gertude {
   private int number;
   private int getNumber(){
      return number;
   }
   private void setNumber(int number){
      this.number = number;
   }
   public static void main(String[] args){
       Gertude gerry = new Gertude();
       gerry.setNumber(100);
       System.out.println("Value of gerry.getNumber() Is " +gerry.getNumber());
       //Wrong value whenPrinting by Query way-> It prints the value as 0 instead of 100
       System.out.println("Value of (new Gertude()).getNumber() is  "+ ((new Gertude()).getNumber()));
      
   }
}
   

[saurav sarkar]

what is your question?.
Both the objects are different.Your second SOP will print '0' always
as the instance variable of type int is initialized default to 0.

[marc weber]

Originally posted by Rajat Bhatnagar:
... But When I try printing the value of this gertude variable
by saying (new Gertude()).getNumber() it always comes to 0...

You're creating a new instance of Gertude, and then calling getNumber() before setting the number to anything, so number has its default of 0.

[Rajat Bhatnagar]

It still doesn't work..

Even when i set the value by saying (new Gertude()).setNumber(200);
before the SOP it still prints the value as 0

 package generalProgsConsoleBased;
 
class Gertude {
   private int number;
   private int getNumber(){
      return number;
   }
   private void setNumber(int number){
      this.number = number;
   }
   public static void main(String[] args){
          (new Gertude()).setNumber(200);
       //Wrong value whenPrinting by Query way-> It prints the value as 0 instead of 100
       System.out.println("Value of (new Gertude()).getNumber() is  "+ ((new Gertude()).getNumber()));
      
   }
}
   

[saurav sarkar]

again you are creating two instances of your class.
calling new Gertrude() everytime creates a new instance for you.

[Rajat Bhatnagar]

I got it ..

thnks

[Ernest Friedman-Hill]

Gertrude g = new Gertude();
g.setNumber(200);
System.out.println("Value of g.getNumber() is "+ g.getNumber());