Java

Java RSS

public void close () VS. private void close ()

•

Join Date: Oct 2009

Posts: 29

Reputation: COKEDUDE is an unknown quantity at this point

Solved Threads: 1

COKEDUDE

Offline

Light Poster

public void close () VS. private void close ()

20 Days Ago

Can someone please explain what both of these mean and the good details about them. Please also explain the parameters of how to use it.

•

Join Date: Aug 2008

Posts: 205

Reputation: llemes4011 is an unknown quantity at this point

Solved Threads: 13

llemes4011 llemes4011 is offline

Offline

Posting Whiz in Training

20 Days Ago

Hello.
Adding the private modifier to a method means that you can ONLY call it from within that class.
The public modifier means that you can access that method with the dot (.) operator from other classes.

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
public class Foo{
    public Foo{
        doSomethingInternal(); // Legal (This is the same as this.doSomethingInternal();
        doSomethingExternal(); // Legal (This is the same as this.doSomethingExternal();
    }
    public void doSomethingExternal(){/*code*/}
    private void doSomethingInternal(){/*code*/}
}
public class Foo{
    public Foo{
        doSomethingInternal(); // Legal (This is the same as this.doSomethingInternal();
        doSomethingExternal(); // Legal (This is the same as this.doSomethingExternal();
    }
    public void doSomethingExternal(){/*code*/}
    private void doSomethingInternal(){/*code*/}
}

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
public class Bar{
    public static void main(String[] args){
        Foo foo = new Foo();
        foo.doSomethingExternal(); // Legal
        foo.doSomethingInternal(); // NOT Legal
    }
}
public class Bar{
    public static void main(String[] args){
        Foo foo = new Foo();
        foo.doSomethingExternal(); // Legal
        foo.doSomethingInternal(); // NOT Legal
    }
}

Hope that clears things up =)

Last edited by llemes4011; 20 Days Ago at 6:29 pm. Reason: correction

•

Join Date: Aug 2008

Posts: 205

Reputation: llemes4011 is an unknown quantity at this point

Solved Threads: 13

llemes4011 llemes4011 is offline

Offline

Posting Whiz in Training

20 Days Ago

Good points about the public modifier - You can modify variables in the class through gettor/settor methods. These methods can be called by using the dot (.) operator.
Good points about the private modifier - It allows methods that should ONLY BE CALLED BY THE CLASS (initing vars, handling events, ect) to be non-accessible to anything outside the class. These methods cannot be called by using the dot (.) operator.

(Sorry for double post)