- In java access modifiers is the accessibility or scope of a field, method, constructor, or class.
- The access specifiers are used to define how the variables and functions can be accessed outside the class.
- We can change the access level of constructors, fields, methods, and class by applying the access modifier.
- In C++ there are four types of access modifiers, they are:
- Private
- Public
- Protected
- Default
Private
- The private modifier is only within the class and it cannot be accessed from outside the class.
Sample Code
class A{
private int data=40;
private void msg(){System.out.println("Welcome to Wikitechy");}
}
public class Simple{
public static void main(String args[]){
A obj=new A();
System.out.println(obj.data);//Compile Time Error
obj.msg();//Compile Time Error
}
}
Output
Public
- The public modifier is everywhere, and it can access from within the class, outside the class, within the package and outside the package.
Sample Code
package pack;
public class A{
public void msg(){System.out.println("Welcome to Wikitechy");}
}
Output
Protected
- The protected modifier is within the package and outside the package through child class.
- It cannot be accessed from outside the package, if you do not make the child class.
Sample Code
package pack;
public class A{
protected void msg(){
System.out.println("Welcome to Wikitechy");
}
}
Output
Default
- The default modifier is only within the package and it cannot be accessed from outside the package.
- It will be the default, if you do not specify any access level.
Sample Code
package pack;
class A{
void msg(){System.out.println("Welcome to Wikitechy");}
}
Output
