Intance methods

[Duran Harris]

Hi...
Can I call instance methods if I am in another instance method of the same class(without static modifier)?

[James Tharakan]

hope i understood your question

class A
 {
     void fun(){
         funny();
     }
     
     void funny(){
       System.out.println("Is this you are looking for")    ;
     }
     public static void main(String... arg){
         new A().fun();
     }
     
 }

[Duran Harris]

Oh I see what I'm confused about.
The static modifier needed to be added to protect the variables...
not to allow the instance method to be called.

[Jesper de Jong]

Duran Harris wrote:The static modifier needed to be added to protect the variables...

What do you mean? The 'static' keyword does not 'protect' variables in any way.

[Ankit Garg]

Replying to the original question, Yes you can call an instance method (or non-static method) from another instance method...

[Duran Harris]

In this case..adding the static modifier to the synchronized method made the Thread obtain the class lock as oppossed to the 'this' lock.(I think)

[Ankit Garg]

Duran Harris wrote:In this case..adding the static modifier to the synchronized method made the Thread obtain the class lock as oppossed to the 'this' lock.(I think)

Duran are you talking about this post or are lost in some other post :P

[Duran Harris]

Yes.I was trying to explain to Jesper how static would protect the static variables

[Duran Harris]

But something new now:


System.out.printf("%+(04.2f",12.6542);

Doesn't the 4.2 in the format string indicate that the number should have 4 digits before the decimal point and 2 after it(as well as signing it,enclosing negatives in brackets,padding with zeroes)???

[camilo lopes]

to call intance methods, you must to create only one object of the class that you want. after you can call anything instance methods this class without problem.

class A{

void setName(){}

void setLastName(){}

public static void main(String args[]){

A calling = new A();
calling.setName();
calling.setLastName();
}

[Punit Singh]

Duran Harris wrote:But something new now:

System.out.printf("%+(04.2f",12.6542);

Doesn't the 4.2 in the format string indicate that the number should have 4 digits before the decimal point and 2 after it(as well as signing it,enclosing negatives in brackets,padding with zeroes)???

No Duran.

4.2f, it is say 4 places minimum to be occupied including decimal point but after decimal only 2 places maximum allowed.

It will only restrict you in fractional part so .65 is allowed only

so 4.2f===> 12.65;
12345 //total 5 places occupied already
04.2f====> more than 4 places already occupied so no place remained for 0 padding so===> 12.65
(04.2f====> there is no minus sign ====>12.65
+(04.2f===> number is positive here so===> +12.65

same for

System.out.printf("%+(02.2f",12.6542);====>+12.65
                                                                               123456 places occupied so no padding of 0
System.out.printf("%+(06.2f",12.6542);===> +12.65//6 places already occupied so no padding of 0
System.out.printf("%+(07.2f",12.6542);===> +012.65//one 0 padding required
System.out.printf("%+(08.2f",12.6542);===> +0012.65//two 0 padding required