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2004-04-01

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2004-04-02

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2004-04-03

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_ rjb-0.0.6

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test.rb¤«¤éÈ´¿è¡£
  class TestIter
    def initialize()
      @i = 5
    end
    def hasNext()
      @i > 0
    end
    def next()
      @i -= 1
      @i.to_s
    end
  end
 
  def test_newobject()
    it = TestIter.new
    it = bind(it, 'java.util.Iterator')
    test = import('jp.co.infoseek.hp.arton.rjb.Test')
    a = test.new
    assert("43210", a.concat(it))
  end
¤Ç¡¢Âбþ¤¹¤ëjp.co.infoseek.hp.arton.rjb.Test¤Ï¡¢
package jp.co.infoseek.hp.arton.rjb;
import java.util.Iterator;
 
public class Test {
    public String concat(Iterator i) {
	StringBuffer sb = new StringBuffer();
	for (; i.hasNext(); ) {
	    sb.append(i.next());
	}
	return new String(sb);
    }
}
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// O1.java
package com.example;
public class O1 {
    public void hello() {
	System.out.println("hello!");
    }
    public class I1 {
	public void hello() {
	    System.out.println("hello");
	}
    }
}
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//O2.java
package com.example;
public class O2 extends O1 {
    public void hello() {
	System.out.println("hell!");
    }
    public class I1 extends O1.I1 {
	public void hello() {
	    System.out.println("hell");
	}
    }
}
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// Oc.java
 package com.example;
public class Oc {
    public static void main(String[] args) {
	O1 o = new O2();
	o.hello();	 // ²¾ÁÛ²½¤µ¤ì¤Æ¤¤¤ë¤Î¤Çhell!
	O1.I1 in = o.new I1();
	in.hello();
	in = ((O2)o).new I1();
	((O2)o).hello(); // ÅöÁ³hell!
	in.hello();
    }
}
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class Foo
 def initialize()
   @bar = nil
 end
 attr_accessor :bar
end
 
foo = Foo.new
if foo.bar.nil?   #foo.bar¤¬nil¤È¤¤¤¦¾õÂÖ¤«È½Äê
  puts 'nil'
else
  do_something(foo.bar)
end
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 class Foo {
     Bar bar;
     Bar getBar() {
         return bar;
     }
 }
 ...
 foo = new Foo();
 if (foo.getBar() == null) {
    System.out.println("null");
 } else {
    doSomething(foo.getBar());
 }
 ...
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 Bar bar = foo.getBar();
 doSomething(bar);
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 foo.doSomething();
 ...
class Foo {
  Bar bar;
  void doSomething() {
    if (bar != null) {
       bar.doSomething();
    }
  }
}
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    }
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public interface BarReceiver {
  void setBar(Bar bar);
}
 
public class Foo {
  private Bar createBar() throws OperationException {
    ....
  }
  /**
   * ¡Á¤·¤Æ¡Á¤·¤Æ¡Á¤·¤¿¤¦¤¨¤Çbar¤òÀßÄꤹ¤ë¡£¤¿¤À¤·¡Á¤Î¾ì¹ç¤Ë¤Ïbar¤òÀßÄꤷ¤Ê¤¤¡£
   * @param barReceiver bar¤òÀßÄꤹ¤ë¥ª¥Ö¥¸¥§¥¯¥È
   * @return bar¤òÀßÄꤷ¤¿¤é¿¿¡£ÀßÄꤷ¤Ê¤±¤ì¤Ðµ¶¡£¡ÊÃí¡§ÌÀ¼¨Åª¤Ënull¤òÀßÄꤹ¤ë¤³¤È¤Ï¤Ê¤¤¡Ë
   * @throws OperationException ½èÍý¤Ë¼ºÇÔ¡£¤³¤Î¾ì¹ç¡¢bar¤ÎÀßÄê¤Ï¹Ô¤ï¤ì¤Ê¤¤
   */
  boolean fetchBar(BarReceiver barReceiver) throws OperationException {
     boolean isBarCreatable = false;
    ...
     // ¤¤¤í¤¤¤íÁ°Äó¾ò·ï¤Î¥Á¥§¥Ã¥¯
    ...
     if (isBarCreatable) {
       barReceiver.setBar(createBar());
     }
     return isBarCreatable;
  }
}
 
public class Client implements BarReceiver {
  private Bar bar;
  public void setBar(Bar newBar) {
    bar = newBar;
  }
  void someMethod {
    ....
    Foo foo = new Foo();
    bar = Bar.createDefault();
    foo.fetchBar(this); // ÀßÄê/̤ÀßÄê¤òÌä¤ï¤Ê¤¤
    bar.doSomething();
    ...
    bar = null;
    if (foo.fetchBar(this)) { // ÀßÄꤵ¤ì¤¿¾ì¹ç¤Î¤ß½èÍý
       bar.doSomething();
    }
    ...
  }
}
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public interface BarReceiver {
  void doWithBar(Bar bar) throws OperationException;
}
//Foo¤Ï¤Û¤È¤ó¤ÉƱ¤¸¡Ê¸Æ¤Ó½Ð¤¹¥á¥½¥Ã¥É¤¬¾å¤Î¤ËÊѤï¤ë¡Ë
 
//Client
  void someMethod {
    ....
    Foo foo = new Foo();
    foo.fetchBar(new BarReceiver() {
        public doWithBar(Bar bar) throws OperationException {
           .. bar¤ò»È¤Ã¤¿½èÍý
        }
    });
    ...
  }
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¥×¥í¤Î¥³¡¼¥É¡¢¥¢¥Þ¤Î¥³¡¼¥É(4/23¥¢¥ó¥«¡¼Êѹ¹) ÌÌÅݤÊÉôʬ¤ÏºÆÍøÍÑ
import java.io.*;
public class Gcp {
    private static final String te[] = {"¥°¡¼", "¥Á¥ç¥­", "¥Ñ¡¼"};
    private int win;
    private int loose;
    private int fair;
    private BufferedReader reader;
    private final Result[][] state;
 
    public Gcp () throws IOException {
	reader = new BufferedReader(new InputStreamReader(System.in));
	state = new Result[3][3];
	state[0][0] = state[1][1] = state[2][2] = new Fair();
	state[0][1] = state[1][2] = state[2][0] = new Win();
	state[0][2] = state[1][0] = state[2][1] = new Loose();
    }
    private abstract class Result {
	void execute(int you, int com) {
	    System.out.print(" ¥³¥ó¥Ô¥å¡¼¥¿¡§" + te[com] + 
			       ",¥×¥ì¥¤¥ä¡¼¡§" + te[you] + ":");
	}
    }
    private class Win extends Result {
	void execute(int you, int com) {
	    super.execute(you, com);
	    System.out.println("¤¢¤Ê¤¿¤Î¾¡¤Á¤Ç¤¹¡ª");
	    win++;
	}
    }
    private class Loose extends Result {
	void execute(int you, int com) {
	    super.execute(you, com);
	    System.out.println("¤¢¤Ê¤¿¤ÎÉ餱¤Ç¤¹¡ª");
	    loose++;
	}
    }
    private class Fair extends Result {
	void execute(int you, int com) {
	    super.execute(you, com);
	    System.out.println("°ú¤­Ê¬¤±¤Ç¤¹¡ª");
	    fair++;
	}
    }
 
    public void execute(int count) {
         win = loose = fair = 0;
	for (int i = 0; i < count; i++) {
	    int you = read();
	    int com = (int)(Math.random() * 2 + 1);
	    state[you][com].execute(you, com);
	}
	System.out.println("¥×¥ì¥¤¥ä¡¼¤Î¾¡ÇÔ¿ô¡§" + win + "¾¡" +
			   loose + "Éé" + fair + "°ú¤­Ê¬¤±");
    }
 
    private int read() {
	for (;;) {
	    System.out.print("¤¢¤Ê¤¿¤Î¼ê¡Ê0¡§¥°¡¼¡¢1¡§¥Á¥ç¥­¡¢2¡§¥Ñ¡¼¡Ë");
	    String s;
	    try {
		s = reader.readLine();
	    } catch (IOException e) {
		continue;
	    }
	    if (s.length() > 0) {
		if (s.equals("q")) { // ¥Ð¥Ã¥¯¥É¥¢
		    System.exit(1);
		}
		try {
		    int n = Integer.parseInt(s);
		    if (n >= 0 && n <= 2) return n;
		} catch (NumberFormatException e) {
		}
	    }
	}
    }
 
    public static void main(String[] args) throws Exception {
	Gcp gcp = new Gcp();
	gcp.execute(5);
    }
}
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Friend Interface FnKeyHandler
    Friend Sub handleEvent(ByVal frm As MyForm)
End Class
 
Private fnCommands() As FnKeyHandler = New FnKeyHandler() {
    New F1Handler(),
    New F2Hanlder(),
    ...
}
 
Private Sub Form_KeyDown(...) Handles MyForm.OnKeyDown
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    End If
End Sub
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