JAVA1 Encapsulation 예제 (임시저장)

// 캡슐화( Encapsulation )   접근제한자에 따른 멤버 접근

class Encap
{

 private int a = 10;
 int b = 20;      // default
 protected int c = 30;
 public int d = 40;
 public int getA()
 {
  return a;
 }
}

class EncapEx
{
 public int aa = 1;
 int bb = 2;      //default
 protected int cc = 3;
 public int dd = 4;

 public static void main(String[] args)
 {
  EncapEx ee = new EncapEx();
  System.out.println( "Encap aa : " + ee.aa );
  System.out.println( "Encap bb : " + ee.bb );
  System.out.println( "Encap cc : " + ee.cc );
  System.out.println( "Encap dd : " + ee.dd );

  Encap ec = new Encap();
  // System.out.println( "Encap a : " + ec.a );    // 같은 멤버만 접근
  System.out.println( "Encap a : " + ec.getA() );
  System.out.println( "Encap b : " + ec.b );    // 같은 폴더만 접근
  System.out.println( "Encap c : " + ec.c );    // 같은 폴더이거나 상속받았을 때 접근
  System.out.println( "Encap d : " + ec.d );    // 아무나 접근
 }
}