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Java - ¤¿¤Þ¤Ë¤Ã¤­¡£

ºÇ½ª¹¹¿·»þ´Ö: 2008-09-04 19:19

2004-11-14 Sun

¢£ ºÇ¿·¥Ð¡¼¥¸¥ç¥ó¤Ï 1.5.0 ¤Ê¤Î¤« 5.0 ¤Ê¤Î¤«

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Java 2 Platform Standard Edition 5.0, J2SE 5.0

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J2SE Development Kit 5.0, JDK 5.0
J2SE Runtime Environment 5.0, JRE 5.0

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Category: [Java]

2004-11-05 Fri

¢£ CodeRuler

CodeRuler¤ÇÃæÀ¤À¤³¦¤Î²¦¹ñ¤ò¹¶Î¬
RoboCode ¤Ë³¤¯ IBM alphaWorks ¤Î¥²¡¼¥à¡¥

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Category: [Java][Eclipse]

2004-10-26 Tue

¢£ ưŪ¥×¥í¥­¥·¡¼¤ÇJava¸¡¾Ú

¤³¤³¤Ç»È¤Ã¤Æ¤¤¤ë Proxy ¤ò±þÍѤ¹¤ì¤Ð¡¤Java ¤Ç¤â Dynamic Birthmark ¤¬Ãê½Ð¤Ç¤­¤ë¤Ê¤¡¡¥¤È°ÊÁ°¹Í¤¨¤Æ¤¤¤¿¤³¤È¤ò»×¤¤½Ð¤·¤¿¡¥

Category: [Java][¸¦µæ]

2004-10-26 Tue

¢£ jarhoo

via javanews.jp
NoClassDefFoundError ¤È¤«¡¤ClassNotFoundException ¤¬È¯À¸¤·¤¿¾ì¹ç¤Ë¡¤¸«¤Ä¤«¤é¤Ê¤«¤Ã¤¿¥¯¥é¥¹¤¬¤É¤Î jar ¥Õ¥¡¥¤¥ë¤ËÆþ¤Ã¤Æ¤¤¤ë¤Î¤«¤òõ¤¹¥·¥¹¥Æ¥à¡¥
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- org.apache.poi.hssf.usermodel.HSSFRow
- org.apache.tools.ant.Task
- java.util.Collection
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Category: [Java]

2004-10-16 Sat

¢£ J2SE 5.0¡ÖTiger¡×¤Ç²¿¤¬ÊѤï¤ë¤«?

¥µ¡¼¥Ð¥µ¥¤¥É¤Ê¤é¤Þ¤¡Æ³Æþ¤ò¹Í¤¨¤Æ¤â¤¤¤¤¤ó¤À¤í¤¦¤¬¡¤¥Ç¥¹¥¯¥È¥Ã¥×´Ä¶­¤Ç¥á¥¤¥ó¤Ë»È¤¦¤Ë¤Ï¡¤¤Þ¤ÀÁᤤ¤è¤¦¤Êµ¤¤¬¤¹¤ë¡¥

annotation ¤ä generic ¥¿¥¤¥×¤È¤«¡¤auto boxing¡¤concurrent ¤È¤«»È¤¤¤¿¤¤¤ó¤À¤±¤É¡¤º£¤Þ¤Ç¤Î¥½¡¼¥¹¤¸¤ã¤¡·Ù¹ð½Ð¤ë¤·¡¤¤Á¤ç¤Ã¤È»È¤¤¿É¤¤¤Ê¤¡¡¥

Category: [Java]

2004-10-11 Mon

¢£ Jakarta POI ¤Ç Excel ¤òÆÉ¤â¤¦

POI ¤È¤Ï

Java API To Access Microsoft Format Files

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Excel ¤òÆÉ¤à¤Ë¤Ï POI ¤ÎÃæ¤Î HSSF ¤ò»È¤¦¤è¤¦¤À¡¥¤È¸À¤Ã¤Æ¤â¡¤Á´¤Æ°ì¤Ä¤Î jar ¥Õ¥¡¥¤¥ë¤Ë¼ý¤Þ¤Ã¤Æ¤¤¤ë¤Î¤Ç¡¤µ¤¤Ë¤·¤Ê¤¤¡¥

¤µ¤Æ¡¤POI ¤Ç Excel ¤òÆÉ¤à¤Î¤ËɬÍ×¤Ê¤Î¤Ï HSSFWorkbook, HSSFSheet, HSSFRow, HSSFCell ÊդꡥÁ´¤Æ org.apache.poi.hssf.usermodel ¥Ñ¥Ã¥±¡¼¥¸¤Ë°¤¹¤ë¡¥¤½¤ì¤¾¤ì¤Î°ÕÌ£¤Ï Excel ¤ÈƱ¤¸¡¥
- Workbook ¤¬°ì¤Ä¤Î Excel ¥Õ¥¡¥¤¥ë¡¥
- HSSFSheet ¤¬¥·¡¼¥È (Excel ¤Î²¼¤ÎÊý¤Î¥¿¥Ö)
- HSSFRow ¤¬¥·¡¼¥È¤ÎÃæ¤Î°ì¹Ô
- HSSFCell ¤¬°ì¤Ä¤Î¥Þ¥¹

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HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream("hoge.xls"));
HSSFSheet sheet = workbook.getSheet("sheetname");
HSSFRow row = sheet.getRow(0);
HSSFCell cell = row.getCell((short)0);
String string = cell.getStringCellValue();


¤³¤ì¤Ç¡¤hoge.xls ¤Î sheetname ¥·¡¼¥È¤Î A1 ¤Ë¤¢¤ëʸ»úÎó¤òÆÉ¤à¤³¤È¤¬¤Ç¤­¤ë¡¥

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- ¿ôÃÍ

cell.getNumericCellValue()


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cell.getDateCellValue()


- ʸ»úÎó

cell.getStringCellValue()


- ¼° (¼°¤Î·ë²Ì¤ÎÃͤǤϤʤ¯¡¤¼°¤½¤Î¤â¤Î)

cell.getCellFormula()


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¥»¥ë¤ò¼èÆÀ¤¹¤ë¤È¤­¤Î HSSFRow#getCell ¤Î°ú¿ô¤Ï short ·¿¡¥¤Ê¤ó¤Ç¤ä¤Í¤ó¤Ê´¶¤¸¤À¤¬¡¤¤Þ¤¡»ÅÊý¤Ê¤¤¡¥¤â¤·¡¤¤½¤Î¥»¥ë¤Ë²¿¤âÃͤ¬Æþ¤Ã¤Æ¤Ê¤±¤ì¤Ð null ¤òÊÖ¤¹¡¥HSSFSheet#getRow ¤âƱ¤¸¤¯¡¥

¤Á¤Ê¤ß¤Ë¡¤¥»¥ë¤Î¥¹¥¿¥¤¥ë (±¦´ó¤»¤È¤«¡¤ÇØ·Ê¿§¤È¤«) ¤ò¼èÆÀ¤·¤¿¤¤¾ì¹ç¤Ï HSSFCell#getCellStyle ¤ò»È¤¨¤Ð¤¤¤¤¤è¤¦¤À¡¥get ¤ò create ¤ËÊѤ¨¤ë¤È¡¤¿·¤·¤¯¤½¤Î¥Ç¡¼¥¿¤òºîÀ®¤¹¤ë¤³¤È¤Ë¤Ê¤ë¡¥

¤Á¤Ê¤ß¤Ë¡¤¤³¤³¤Ë½ñ¤¤¤¿ÆâÍÆ¤Ï HSSF - HOWTO ¤È Javadocs ¤òį¤á¤¿¤À¤±¤Ç½ñ¤¤¤¿¤â¤Î¤À¡¥¥°¥é¥Õ¤ò°·¤¦ÊýË¡¤Þ¤Ç¤ÏÆÉ¤ó¤Ç¤Ê¤¤¤·¡¤ÃΤé¤Ê¤¤¡¥Windows ¤Ç»È¤¦Ê¬¤Ë¤ÏÆüËܸì¤ËÌäÂê¤Ï¤Ê¤«¤Ã¤¿¡¥

¤ó¡¼¤Ã¤È¡¤maven ¤Î¥Ç¥Õ¥©¥ë¥È¥ê¥â¡¼¥È¥ê¥Ý¥¸¥È¥ê¤Ë¤Ï¸Å¤¤¥Ð¡¼¥¸¥ç¥ó (2.0-final-20040126) ¤·¤«¤Ê¤¤¤Î¤Ç¡¤Jakarta ËÜ²È ¤«¤é 2.5.1-final-20040804 ¤ò¼è¤Ã¤Æ¤­¤Æ¡¤${user.home}/.maven/repository/poi/jars/ °Ê²¼¤ËÃÖ¤¯¡¥
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Category: [Java][Tips]

2004-10-10 Sun

¢£ Prospector Web Demo Edition for Java

IBM¡¢Java¥³¡¼¥ÉÀìÍѸ¡º÷¥¨¥ó¥¸¥ó¡ÖProspector¡×¤ò³«È¯Ãæ
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Category: [Java]

2004-10-06 Wed

¢£ °ì¹Ô·Ç¼¨ÈÇ

Èó¾ï¤Ë´Êñ¤Ê°ì¹Ô·Ç¼¨ÈǤò Servlet, JSP, Java Bean ¤ò»È¤Ã¤Æ½ñ¤¤¤Æ¤ß¤¿¡£Servlet ¤Î¥µ¥ó¥×¥ë¤È¤·¤Æ»È¤¨¤ë¤«¤â¡£¾å¤Î war ¥Õ¥¡¥¤¥ë¤ò¥À¥¦¥ó¥í¡¼¥É¤·¡¢Tomcat/webapps °Ê²¼¤ËÃÖ¤¤¤Æ¡¢

http://servername:8080/onelinebbs/bbs.jsp

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Category: [Java]

2004-10-03 Sun

¢£ AddTracer

AddTracer ¤Î¥ê¥Õ¥¡¥¯¥¿¥ê¥ó¥°¤ò¤·¤Ê¤­¤ã¤È¼ê¤ò²Ã¤¨¤ë¡¥¤·¤«¤·¡¤¶²¤í¤·¤¤¤Û¤É¡¤¥ê¥Õ¥¡¥¯¥¿¥ê¥ó¥°¤Î¤È¤Ã¤«¤«¤ê¤¬¸«¤Ä¤«¤é¤Ê¤¤¡¥¥Ð¥¤¥È¥³¡¼¥É¤¤¤¸¤ê¤¹¤®¤Æ¤ë¤Î¤«¤Ê¤¡¡¥
invoke Ì¿Îá¤Ê¤É¤Î instruction ¤Ë¤è¤Ã¤Æ if ¤Ç¾ò·ïʬ´ô¤·¤Æ¤¤¤¿¤Î¤ò InstructionUpdateHandler ¤Ê¤ë¥¯¥é¥¹¤òƳÆþ¤·¡¤¤½¤Î¥¯¥é¥¹¤Î isTargetInstruction ¤Ç instruction ¤Ë¤è¤Ã¤ÆÅ¬ÀÚ¤Ê InstructionUpdateHandler ¤Î¥¤¥ó¥¹¥¿¥ó¥¹¤ò¼èÆÀ¤·¤è¤¦¤È¤·¤¿¤Î¤À¤¬¡¤³Æ instruction ´Ö¤Î´Ø·¸¤¬Ì©ÀܤËÍí¤ß¹ç¤Ã¤Æ¤¤¤ë¤Î¤Ç¡¤¤Þ¤º¤Ï¡¤¤½¤ÎÍí¤ß¹ç¤¤¤ò¤Û¤°¤µ¤Ê¤­¤ã¡¥

Category: [Java][Tool]

2004-10-01 Fri

¢£ ÊÆSun¡¤Java¤Î¿·ÈÇ¡ÖJ2SE 5.0¡×¤ò°ìÈ̸ø³«¡¤À¸»ºÀ­¤äÀ­Ç½¤ò²þÁ±

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List list = new ArrayList();
for(int i = 0; i < 10; i++) list.add(new Integer(i));


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javac -Xlint:unchecked Test.java


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         for(int i = 0; i < 10; i++) list.add(new Integer(i));


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List<Integer> list = new ArrayList<Integer>();
for(int i = 0; i < 10; i++) list.add(i);


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Category: [Java]

2004-09-29 Wed

¢£ Java World 11 ·î¹æ¤Î¡ÖGroovy ¤ÎÌ¥ÎϤòõ¤ë¡×¤òÆÉ¤ó¤À¡¥

Groovy ¤ÎÌ¥ÎϤϤ狼¤ë¤¬¡¤µ­»ö¤òÆÉ¤ó¤À¤À¤±¤Ç¤Ï pnuts ¤ò±Û¤»¤Æ¤Ê¤¤¤è¤¦¤Ê´¶¤¸¡¥

Java ÍÑ¥¹¥¯¥ê¥×¥È¸À¸ì¤Ï¿§¡¹¤È¤¢¤ë¡¥Jython ¤È¤«¡¤JRuby ¤â¤¢¤Ã¤¿¤Ã¤±? Pnuts ¤Ê¤É¤â¡¥¤½¤ì¤é¤ÈÈæ¤Ù¤Æ¡¤¤É¤¦¤¹¤´¤¤¤Î¤«¤ò¼¨¤»¤Ê¤¤¤È¤¤¤±¤Ê¤¤¤È»×¤¦¤Î¤À¤¬¡¥

Groovy ¤Ï¤Þ¤À¼ã¤¤¡¥¤½¤Îʬ¡¤¥Ð¥°¤â¤¢¤ë

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Groovy ¤Î¥½¡¼¥¹¤òÆÉ¤à¤È°ì½Ö Ruby ¤Ë»×¤¨¤Æ¤¯¤ë¡¥¥¯¥í¡¼¥¸¥ã¤ò¥µ¥Ý¡¼¥È¤¹¤ë¸À¸ì¤ò¾¤ËÃΤé¤Ê¤¤¤À¤±¤«¤â¡¥

Category: [Java]

2004-08-30 Mon

¢£ Constant_Pool ¤ò»²¾È¤¹¤ë¤â¤Î

Constant_Pool Æâ
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- constant_string_info#string_index
- constant_fieldref_info#class_index
- constant_fieldref_info#name_and_type_index
- constant_methodref_info#class_index
- constant_methodref_info#name_and_type_index
- constant_interfacemethodref_info#class_index
- constant_interfacemethodref_info#name_and_type_index
- constant_name_and_type_info#name_index
- constant_name_and_type_info#descriptor_index

ClassFile
- ClassFile#this_class
- ClassFile#super_class
- ClassFile#interfaces

field_info
- field_info#name_index
- field_info#descriptor_index

method_info
- method_info#name_index
- method_info#descriptor_index

attribute_info
- attribute_info#attribute_name_index
- sourcefile_attribute_info#sourcefile_index
- constantvalue_attribute_info#constantvalue_index
- exceptions_attribute_info#exception_index_table
- inner_class_attribute_info#inner_class_info#inner_class_index
- inner_class_attribute_info#inner_class_info#outer_class_index
- local_variable_table_attribute#local_variable_info#name_index
- local_variable_table_attribute#local_variable_info#descriptor_index

instruction
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Category: [Java][BCEL]

2004-08-28 Sat

¢£ Jad - the fast JAva Decompiler

Jad ¤Ã¤Æ¥¹¥¿¥Ã¥¯¤ò¤¤¤í¤¤¤í¤¤¤¸¤¯¤Ã¤¿¥¯¥é¥¹¥Õ¥¡¥¤¥ë¤Ï¤Á¤ã¤ó¤È¥Ç¥³¥ó¥Ñ¥¤¥ë¤Ç¤­¤Ê¤¤¤Î¤Í¡¥

dup2_x1, pop, pop, swap ¤Ê¤ó¤«¤òϢ³¤Ç»È¤Ã¤Æ¤¤¤ë¤È¡¤¥Ð¥¤¥È¥³¡¼¥É¤¬¤Û¤Ü¤½¤Î¤Þ¤Þ½Ð¤Æ¤­¤¿¡¥

Category: [Java][Tool]

2004-08-26 Thu

¢£ java.net

DonQuixote ¤ÇÍøÍѤ·¤Æ¤¤¤ë¤Î¤À¤¬¡¢
SourceForge ¤È°ã¤Ã¤Æ¡¢³èȯ¤Ê¥×¥í¥¸¥§¥¯¥È¤ò¤¹¤°¤Ë»²¾È¤Ç¤­¤Ê¤¤¤Î¤¬
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Category: [Java]

2004-08-21 Sat

¢£ DonQuixote

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¤Á¤Ê¤ß¤Ë¡¢oikaze ¤Î¥Ú¡¼¥¸¤¸¤ã¤Ê¤¯¤Æ¡¢java.net ¤Î¥Ú¡¼¥¸¡£

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Category: [Java][IPP]

2004-08-21 Sat

¢£ ¤¤¤í¤¤¤í

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Category: [Java]

2004-08-20 Fri

¢£ DonQuixote

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Category: [Java][IPP]

2004-08-18 Wed

¢£ ¥¯¥é¥¹¥Õ¥¡¥¤¥ë¾ðÊó½ÐÎϥġ¼¥ë

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java -jar lib/classinfo.jar SomeClass.class

Category: [Java][Tool]
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