I need help on java modifiers, pls.

[mayfjf]

1. Hello, I wonder what are the differences between modifiers? Private, public, default, static...? I have reread and reread my java book, but I just can't understand. Thanks for any info...

May

[hirak1984]

look at this. or this

[mayfjf]

look at this. or this

Thanks... It really helps!

May

[hirak1984]

there is a request please dont post more than one thread with same question.It
really makes people confused.
Best of luck.

[mayfjf]

there is a request please dont post more than one thread with same question.It
really makes people confused.
Best of luck.

Yeah, sorry for making anyone confused. I am really new to TSDN and I myself didn't know how did I post two threads with one subject. Maybe I have clicked the 'Submit reply ' button twice. Next time, i'd be very careful.

May

[r035198x]

Yeah, sorry for making anyone confused. I am really new to TSDN and I myself didn't know how did I post two threads with one subject. Maybe I have clicked the 'Submit reply ' button twice. Next time, i'd be very careful.

May

Yeah you probably hit the button twice.

[dmjpro]

1>Private is a modifier which can be used in class member
with in the the class scope u can use those members...

2>Public is a modifier whole packages can access those members

3>Default is a modifier which can be accessed through out the same package only

4>Static is modifier which is only accessed without using the class object reference.
the static can be further public private or default.
default means with out modifier specification it is default......

thankkksksssss............

[r035198x]

1>Private is a modifier which can be used in class member
with in the the class scope u can use those members...

2>Public is a modifier whole packages can access those members

3>Default is a modifier which can be accessed through out the same package only

4>Static is modifier which is only accessed without using the class object reference.
the static can be further public private or default.
default means with out modifier specification it is default......

thankkksksssss............

Default is not a Java modifier, the modifier is protected.
Static objects can be accessed using a class object reference.

[dmjpro]

in the same package the default access specifier and protected acts as same....
but in different package the protected can be accessed in subclasses but the default is not.

[mayfjf]

I have already tried some simple programs using static , and here is my sample codes, (these compile)...

//SAMPLE PROGRAM ON THE USE OF STATIC MODIFIER
 
package java_samples;
 
class samp1{
 
    public static void main(String args[]){
        System.out.println(1+2+"3");
        System.out.println("1"+ 2+1+2);
        class1.member1();
        class1.member2();
        System.out.println(class1.part1); // part1 is static, it can be   accessed even without creating an object.
    }
}
 
 

package java_samples;
 
//import java.io.*;
 
 class class1{
     static int part1 = 12;   // STATIC VARIABLE part1
     static void member1(){    // STATIC METHOD member1; STATIC METHOD IS IMPORTANT  TO CALL part1
 
 
        System.out.println("HELLO, THIS IS MEMBER1!!");
        System.out.println(class1.part1); 
    }
 
     static void member2(){
 
        class1.member1();
    }
}
 
 

But now, my question is: why can't I use the protected modifier on class1? class1 and samp1 belongs to the same package

[r035198x]

I have already tried some simple programs using static , and here is my sample codes, (these compile)...

//SAMPLE PROGRAM ON THE USE OF STATIC MODIFIER
 
package java_samples;
 
class samp1{
 
    public static void main(String args[]){
        System.out.println(1+2+"3");
        System.out.println("1"+ 2+1+2);
        class1.member1();
        class1.member2();
        System.out.println(class1.part1); // part1 is static, it can be accessed even without creating an object.
    }
}
 
 

package java_samples;
 
//import java.io.*;
 
class class1{
     static int part1 = 12; // STATIC VARIABLE part1
     static void member1(){    // STATIC METHOD member1; STATIC METHOD IS IMPORTANT TO CALL part1
 
 
        System.out.println("HELLO, THIS IS MEMBER1!!");
        System.out.println(class1.part1); 
    }
 
     static void member2(){
 
        class1.member1();
    }
}
 
 

But now, my question is: why can't I use the protected modifier on class1? class1 and samp1 belongs to the same package

Post the code that you want to try the protected modifier with. I'm not really getting your question.

[mayfjf]

Post the code that you want to try the protected modifier with. I'm not really getting your question.

I was just wondering before why cant I use the code:

 
protected class class1{
.
.
.
}
 
 

but I guess I have now the answer. Is it because protected is a method/field modifier??