package c0409;

public class Outer {

private int x = 100;
private static int y = 200;

public Outer() {}

public void disp() {
System.out.println("\nOuter Class Method");
System.out.printf("x = %d\n", x);
System.out.printf("y = %d\n", y);
}

public void setX(int x) {
this.x = x;
}

public int getX() {
return x;
}

static class Inner {
private int a = 10;
private static int b = 20;     // static Class 에서만 허용

public Inner(){}

public void disp_in() {
  System.out.println("Inner Class Method");
  System.out.printf("a = %d\n", a);
  System.out.printf("b = %d\n", b);
 
  // System.out.printf("x = %d\n", out.getX());
  new Outer().disp();
 
  System.out.printf("\ny = %d\n", y);
}

}

public static void main(String ... args) {

Outer.Inner oi = new Outer.Inner();
oi.disp_in();  
}

}

private int x = 100;
private static int y = 200;

public Outer() {}

public void disp() {
System.out.println("\nOuter Class Method");
System.out.printf("x = %d\n", x);
System.out.printf("y = %d\n", y);
}

static class Inner {
private int a = 10;
private static int b = 20;     // static Class 에서만 허용
// static int b = 20;     // 직접 변수 접근법2

public Inner(){}

public void disp_in() {
  System.out.println("Inner Class Method");
  System.out.printf("a = %d\n", a);
  System.out.printf("b = %d\n", b);
 
  // System.out.printf("x = %d\n", out.getX());
  new Outer().disp();
 
  System.out.printf("\ny = %d\n", y);
}

public static int getB() {
  return b;
}
}
}

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class InputEx {

/**
  * @param args
  */
public static void main(String[] args) {
 
 InputStreamReader is = new InputStreamReader(System.in);
 BufferedReader bs = new BufferedReader(is);
 
 int a = 0;
 
 System.out.print("숫자를 입력하세요 : ");
 
 try {
  a = Integer.parseInt(bs.readLine());
 } catch(IOException ioe) {
  ioe.printStackTrace();
 } catch(NumberFormatException nfe) {
  nfe.printStackTrace();
 }
 
 if(a > 0)
  System.out.printf("a = %d", a);
 
}

}

public class Outer {

private int x = 100;
private static int y = 200;

public Outer() {}

public void disp() {
System.out.println("Outer Class Method");
System.out.printf("x = %d\n", x);
System.out.printf("y = %d\n", y);
}

class Inner {
private int a = 100;
//private static int b = 200;

public Inner(){}

public void disp_in() {
  System.out.println("Inner Class Method");
  System.out.printf("a = %d\n", a);
  disp();          // 안에서는 바깥 메소드에 접근할 수 있따.
}

class Other_Inner {}
}

public static void main(String ... args) {

Outer out = new Outer();      // Outer Class 생성
out.disp();

Outer.Inner in = new Outer().new Inner();  // Inner Class 생성
in.disp_in();
// in.disp();         // Outer Class의 메소드 접근이 불가능 하다.

Outer.Inner in2 = out.new Inner();    // Inner Class 생성2
in2.disp_in();
}

}

public class Outer {

int x = 100;
private static int y = 200;

public Outer() {}

public void disp() {
System.out.println("Outer Class Method");
System.out.printf("x = %d\n", x);
System.out.printf("y = %d\n", y);
}

class Inner {
private int a = 100;
//private static int b = 200;     // static Class 에서만 허용

public Inner(){}

public void disp_in() {
  System.out.println("Inner Class Method");
  System.out.printf("x = %d\n", x);
  //disp();          // 안에서는 바깥 메소드에 접근할 수 있따.
}

class Other_Inner {}
}

public static void main(String ... args) {

Outer out = new Outer();      // Outer Class 생성
     
Outer.Inner in = out.new Inner();    // Inner Class 생성
out.x = 200;
in.disp_in();

Outer out2 = new Outer();      // Outer Class2 생성
out2.x = 300;

Outer.Inner in2 = out2.new Inner();    // Inner Class2 생성
in2.disp_in();  
in2.disp_in();

}

}