'2008/10'에 해당되는 글 4건
자바 API를 클래스 다이어그램으로 보여주는 사이트 입니다.
API 문서만 봐서는 구조에 대한 부분이 많이 부족합니다. 아래 URL을 통해서 보세요.. ^^ http://www.falkhausen.de/en/index.html 
헐..
쌩뚱맞게 위와 같은 에러를 토하고 컴파일이 안되네요.. ^^;; 찾아보니.. 아래의 원인으로 발생한다고 합니다.
errors are caused by a Java version mismatch between the compiled proxies and your runtime
아래는 런타임과 버전에 대한 내용입니다.
Version 50.0 = Java 1.6.x
Version 49.0 = Java 1.5.x Version 48.0 = Java 1.4.x 'Java' 카테고리의 다른 글
Tag // java
자바는 unsigned primitive type을 지원하지 않습니다.
따라서, unsigned type을 사용할 수 있는 C/C++ 상호 호환을 위해서 Java쪽에서 unsigned type의 처리가 필요합니다. 아래의 코드는 http://www.javafaq.nu/java-example-code-342.html 에서 스크랩을 했습니다. package com.ronsoft.books.nio.buffers; import java.nio.ByteBuffer; /** * Utility class to get and put unsigned values to a ByteBuffer object. * All methods here are static and take a ByteBuffer object argument. * Since java does not provide unsigned primitive types, each unsigned * value read from the buffer is promoted up to the next bigger primitive * data type. getUnsignedByte() returns a short, getUnsignedShort() returns * an int and getUnsignedInt() returns a long. There is no getUnsignedLong() * since there is no primitive type to hold the value returned. If needed, * methods returning BigInteger could be implemented. * Likewise, the put methods take a value larger than the type they will * be assigning. putUnsignedByte takes a short argument, etc. * * @author Ron Hitchens (ron@ronsoft.com) * @version $Id: Unsigned.java,v 1.1 2002/02/12 22:06:44 ron Exp $ */ public class Unsigned { public static short getUnsignedByte (ByteBuffer bb){ return ((short)(bb.get() & 0xff)); } public static void putUnsignedByte (ByteBuffer bb, int value){ bb.put ((byte)(value & 0xff)); } public static short getUnsignedByte (ByteBuffer bb, int position){ return ((short)(bb.get (position) & (short)0xff)); } public static void putUnsignedByte (ByteBuffer bb, int position,int value){ bb.put (position, (byte)(value & 0xff)); } // --------------------------------------------------------------- public static int getUnsignedShort (ByteBuffer bb){ return (bb.getShort() & 0xffff); } public static void putUnsignedShort (ByteBuffer bb, int value){ bb.putShort ((short)(value & 0xffff)); } public static int getUnsignedShort (ByteBuffer bb, int position){ return (bb.getShort (position) & 0xffff); } public static void putUnsignedShort (ByteBuffer bb, int position, int value){ bb.putShort (position, (short)(value & 0xffff)); } // --------------------------------------------------------------- public static long getUnsignedInt (ByteBuffer bb){ return ((long)bb.getInt() & 0xffffffffL); } public static void putUnsignedInt (ByteBuffer bb, long value){ bb.putInt ((int)(value & 0xffffffffL)); } public static long getUnsignedInt (ByteBuffer bb, int position){ return ((long)bb.getInt (position) & 0xffffffffL); } public static void putUnsignedInt (ByteBuffer bb, int position, long value){ bb.putInt (position, (int)(value & 0xffffffffL)); } // --------------------------------------------------- public static void main (String [] argv) throws Exception { ByteBuffer buffer = ByteBuffer.allocate (20); buffer.clear(); Unsigned.putUnsignedByte (buffer, 255); Unsigned.putUnsignedByte (buffer, 128); Unsigned.putUnsignedShort (buffer, 0xcafe); Unsigned.putUnsignedInt (buffer, 0xcafebabe); for (int i = 0; i < 8; i++) { System.out.println ("" + i + ": " + Integer.toHexString ((int)getUnsignedByte (buffer, i))); } System.out.println ("2: " + Integer.toHexString (getUnsignedShort (buffer, 2))); System.out.println ("4: " + Long.toHexString (getUnsignedInt (buffer, 4))); } } 'Java' 카테고리의 다른 글
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