?? original.java
字號:
package p1;
public class Original
{
int n_friendly = 1;
private int n_private = 2;
protected int n_protected = 3;
public int n_public = 4;
void Access( )
{
System.out.println("**** In same class, you can access ...");
System.out.println("friendly member "+n_friendly);
System.out.println("private member "+n_private);
System.out.println("protected member "+n_protected);
System.out.println("public member "+n_public);
}
}
class Derived extends Original
{
void Access( )
{
System.out.println("**** In subClass of same package, you can access member of this class ...");
System.out.println("friendly member "+n_friendly);
// System.out.println("private member "+n_private);
System.out.println("protected member "+n_protected);
System.out.println("public member "+n_public);
Original o = new Original( );
System.out.println("**** In subClass of same package, you can access member of superclass object ...");
System.out.println("friendly member "+o.n_friendly);
// System.out.println("private member "+o.n_private);
System.out.println("protected member "+o.n_protected);
System.out.println("public member "+o.n_public);
}
}
class SamePackage
{
void Access( )
{
Original o = new Original( );
System.out.println("**** In the same package, you can access ...");
System.out.println("friendly member "+o.n_friendly);
// System.out.println("private member "+o.n_private);
System.out.println("protected member "+o.n_protected);
System.out.println("public member "+o.n_public);
}
}
class AccessControl
{
public static void main( String args[ ] )
{
Original o = new Original( );
o.Access( );
Derived d = new Derived( );
d.Access( );
SamePackage s = new SamePackage( );
s.Access( );
}
}
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