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Sun 鍏徃鎻愪緵鐨凧ava API Docs鏄涔犲拰浣跨敤Java璇█涓渶緇忓父浣跨敤鐨勫弬鑰冭祫鏂欎箣涓銆備絾鏄暱鏈熶互鏉ユ鏂囨。鍙湁鑻辨枃鐗堬紝瀵逛簬涓浗鍦板尯鐨凧ava寮鍙戣呮潵璇寸浉褰撶殑涓嶄究銆傜洰鍓峉un 鍏徃姝ｅ湪緇勭粐澶氭柟鍔涢噺灝嗘鏂囨。緲昏瘧鎴愪腑鏂囷紝騫朵簬榪戞棩鍦⊿un 涓浗鎶鏈ぞ鍖猴紙http://gceclub.sun.com.cn/錛夋寮忓彂甯僯ava.lang鍜宩ava.util綾誨簱API 鏂囨。鐨勪腑鏂囩増錛屽叾浠栫被搴揂PI鏂囨。鐨勪腑鏂囩増涔熷皢浜庝粖鍚庝竴孌墊椂闂村唴闄嗙畫鍚戜腑鍥藉湴鍖虹殑寮鍙戜漢鍛樻彁渚涖傚湪J2SE API鏂囨。錛?.0鐗堟湰錛夌殑姹夊寲宸ヤ綔瀹屾垚涔嬪悗錛孲un 涓浗鎶鏈ぞ鍖鴻繕灝嗗紑閫欽ava API 鏂囨。涓枃鐗堢殑鎵撳寘涓嬭澆鏈嶅姟銆?BR> Java API銆鏂囨。涓枃鐗堝彂甯冭鍒?/SPAN>
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^ Mustang ^ 2005-11-08 17:00 鍙戣〃璇勮
]]>浠庤緭鍏ユ寰楀埌鐢ㄦ埛鍒嗗紑杈撳叆鐨勫勾銆佹湀銆佹棩錛屽皢淇℃伅鍋氫負Date綾誨瀷鎻掑叆鏁版嵁搴?/P>
瑙ｅ喅涓錛?/P>
InputBean bean = new InputBean(); // 灝佽鐢ㄦ埛杈撳叆// 鑾峰彇鐢ㄦ埛杈撳叆錛屽皝瑁呬簬bean瀵硅薄涓?/SPAN>Calendar cal = Calendar.getInstance();cal.set(cal.YEAR,bean.getYear()); // Yearcal.set(cal.MONTH,bean.getMonth()); // Monthcal.set(cal.DAY_OF_MONTH,bean.getDay()); // Day// 鏁版嵁搴撴搷浣?/SPAN>闄烽槺錛?BR>Calendar涓殑MONTH瀛楁鍜屾暟緇勪笅鏍囦竴鏍鳳紝浠?寮濮嬶紝0浠ｈ〃Calendar.JANUARY錛?浠ｈ〃Calendar.FEBUARY鈥︹?2浠ｈ〃嬈″勾Calendar.JANUARY銆傚洜姝ょ敤鎴瘋緭鍏ョ殑鏈堜喚鍦ㄧ疆鍏alendar瀵硅薄涔嬪墠蹇呴』榪涜澶勭悊錛屽嵆鍑忎竴銆?BR>
瑙ｅ喅浜岋細
InputBean bean = new InputBean(); // 灝佽鐢ㄦ埛杈撳叆// 鑾峰彇鐢ㄦ埛杈撳叆錛屽皝瑁呬簬bean瀵硅薄涓?/SPAN>Calendar cal = Calendar.getInstance();cal.set(cal.YEAR,bean.getYear()); // Yearcal.set(cal.MONTH,bean.getMonth() - 1); // Monthcal.set(cal.DAY_OF_MONTH,bean.getDay()); // Day// 鏁版嵁搴撴搷浣?/SPAN>^ Mustang ^ 2005-10-24 17:23 鍙戣〃璇勮
]]>public static <T> void sort(List<T> list, Comparator<? super T> c)
1銆佹棦鐒惰鏂規硶鏃犺繑鍥炲鹼紙void錛夛紝絎竴涓?lt;T>鈥濇湁浠涔堜綔鐢紵
2銆佲?鈥濅唬琛ㄤ粈涔堝惈涔夛紵
3銆佲渟uper鈥濊搗浠涔堜綔鐢紵
4銆佸熀浜?銆?錛氣?lt;? super T>鈥濆浣曠悊瑙ｏ紵
public static <T extends Comparable<? super T>> void sort(List<T> list)
1銆佲渆xtends鈥濆浣曠悊瑙ｏ紵
2銆佸叾浣欏悓涓?img src ="http://m.tkk7.com/fidodido/aggbug/15971.html" width = "1" height = "1" />
^ Mustang ^ 2005-10-19 18:14 鍙戣〃璇勮
]]>Future Releases
^ Mustang ^ 2005-10-10 22:54 鍙戣〃璇勮
]]>^ Mustang ^ 2005-08-04 12:50 鍙戣〃璇勮
]]>鍓嶅ぉ鍐欎竴涓被鏃墮亣鍒頒竴涓緢鐪肩敓鐨勭紪璇戦敊璇紙闂綆鍖栧悗錛夛細
1
punlic final class Constants
{
2
public static int VAR2 = VAR1 + 1;
3 public static int VAR1 = 1;
4
}
punlic final class Constants{2
public static int VAR2 = VAR1 + 1;3
public static int VAR1 = 1;4
}緙栬瘧鏃跺嚭閿欙紙絎?琛岋級錛?/P>
illegal forward refrence
浠旂粏涓鎯籌紝鏄洜涓篤AR2寮曠敤鐨刅AR1鍦╒AR2涔嬪悗瀹氫箟錛岀湅鏉ュ湪Java涓畾涔塻tatic鍙橀噺鏃跺簲閬靛驚鈥滃０鏄庡厛浜庝嬌鐢ㄢ濈殑鍘熷垯銆?BR>
浜屻乻tatic鍧?/H4>
榪樻槸涓婁竴涓被錛孷AR1鍜孷AR2瀹氫箟鎴恌inal錛屽煎瓨鍦ㄤ竴涓猵roperties鏂囦歡涓紝鍦ㄤ嬌鐢ㄥ墠蹇呴』灝嗗糽oad榪涙潵錛?/P>
System.getProperties().load(new FileInputStream("constants.properties"));
浜庢槸灝嗕笂闈㈢殑浠ｇ爜鏀懼湪static鍧椾腑錛?BR>
punlic final class Constants{
static{ System.getProperties().load(new FileInputStream("constants.properties"));
} public static final int VAR2 = System.getProperties().getProperty("var2"); public static final int VAR1 = System.getProperties().getProperty("var1");}浣嗗湪榪愯鏃禫AR1鍜孷AR2娌℃湁琚祴鍊鹼紝debug鍚庡彂鐜皊tatic鍧楁牴鏈病鏈夋墽琛屻備簬鏄】鎮燂細final鍙橀噺鍦ㄧ紪璇戞椂渚胯緙栬瘧鍣ㄨ綆椼佽祴鍊鹼紝鍥犳鍦ㄨ繍琛屾椂娌℃湁蹇呰鎵цstatic鍧椼?/P>
^ Mustang ^ 2005-08-04 12:27 鍙戣〃璇勮
]]>^ Mustang ^ 2005-02-13 22:30 鍙戣〃璇勮
]]>StringTokenizer st = new StringTokenizer("this is a test"," ");while (st.hasMoreTokens()) { System.out.println(st.nextToken());}杈撳嚭錛?BR>
this
is
a
test
錛堟瀯閫犲櫒涓浜屼釜瀛楃涓叉槸鍒嗛殧絎︾殑闆嗗悎錛岄粯璁ゆ槸絀烘牸錛?B>
^ Mustang ^ 2005-02-13 22:29 鍙戣〃璇勮
]]> 1import oracle.jdbc.OracleResultSet; // 浣跨敤Oracle鐨凴esultSet瀵硅薄
2import oracle.sql.BLOB; // 浣跨敤Oracle鐨凚LOB瀵硅薄錛岃屼笉鏄痵un鐨凚lob
3
4
5
6try{
7 Connection conn=<鏁版嵁搴撹繛鎺?/SPAN>>;
8 File file=<瀛樺叆鏁版嵁搴撶殑鏂囦歡瀵硅薄>;
9 conn.setAutoCommit(false); // 鍙栨秷Connection瀵硅薄鐨刟uto commit灞炴?/SPAN>
10 String file_name=file.getName();
11
12 // 鏁版嵁搴撲腑鏈変竴涓猧tem琛紝鍏朵腑鐨刦ile_name (varchar2)瀛樺偍鏂囦歡鍚嶏紝file_blob (blob)瀛樺偍鏂囦歡瀵硅薄
13 String sql="INSERT INTO item (file_name,file_blob) VALUES ('" + file_name + "',EMPTY_BLOB())"; // 浣跨敤鈥淓MPTY_BLOB()鈥滄垚鐢熶竴涓┖blob
14 Statement stmt=conn.createStatement();
15 int count=stmt.executeUpdate(sql);
16
17 sql="SELECT file_blob FROM item WHERE iid='" + iid + "' FOR UPDATE"; // 浣跨敤鈥淔OR UPDATE鈥濆緱鍒拌〃鐨勫啓閿?/SPAN>
18 ResultSet rs=stmt.executeQuery(sql);
19 rs.next();
20 BLOB blob=((OracleResultSet)rs).getBLOB("file_blob"); // 寰楀埌BLOB瀵硅薄
21 OutputStream out=blob.getBinaryOutputStream(); // 寤虹珛杈撳嚭嫻?/SPAN>
22 InputStream in=new FileInputStream(file); // 寤虹珛杈撳叆嫻?/SPAN>
23 int size=blob.getBufferSize();
24 byte[] buffer=new byte[size]; // 寤虹珛緙撳啿鍖?/SPAN>
25 int len;
26 while((len=in.read(buffer)) != -1)
27 out.write(buffer,0,len);
28 in.close();
29 out.close();
30
31 conn.commit();
32}
33catch(Exception ex){
34 try{
35 conn.rollback();
36 }
37 catch(SQLException sqle){
38 System.err.println(sqle.getMessage());
39 }
40}
41
42
import oracle.jdbc.OracleResultSet; // 浣跨敤Oracle鐨凴esultSet瀵硅薄2
import oracle.sql.BLOB; // 浣跨敤Oracle鐨凚LOB瀵硅薄錛岃屼笉鏄痵un鐨凚lob3
4
5
6
try{7
Connection conn=<鏁版嵁搴撹繛鎺?/SPAN>>;8
File file=<瀛樺叆鏁版嵁搴撶殑鏂囦歡瀵硅薄>;9
conn.setAutoCommit(false); // 鍙栨秷Connection瀵硅薄鐨刟uto commit灞炴?/SPAN>10
String file_name=file.getName();11
12
// 鏁版嵁搴撲腑鏈変竴涓猧tem琛紝鍏朵腑鐨刦ile_name (varchar2)瀛樺偍鏂囦歡鍚嶏紝file_blob (blob)瀛樺偍鏂囦歡瀵硅薄13
String sql="INSERT INTO item (file_name,file_blob) VALUES ('" + file_name + "',EMPTY_BLOB())"; // 浣跨敤鈥淓MPTY_BLOB()鈥滄垚鐢熶竴涓┖blob14
Statement stmt=conn.createStatement();15
int count=stmt.executeUpdate(sql);16
17
sql="SELECT file_blob FROM item WHERE iid='" + iid + "' FOR UPDATE"; // 浣跨敤鈥淔OR UPDATE鈥濆緱鍒拌〃鐨勫啓閿?/SPAN>18
ResultSet rs=stmt.executeQuery(sql);19
rs.next();20
BLOB blob=((OracleResultSet)rs).getBLOB("file_blob"); // 寰楀埌BLOB瀵硅薄21
OutputStream out=blob.getBinaryOutputStream(); // 寤虹珛杈撳嚭嫻?/SPAN>22
InputStream in=new FileInputStream(file); // 寤虹珛杈撳叆嫻?/SPAN>23
int size=blob.getBufferSize();24
byte[] buffer=new byte[size]; // 寤虹珛緙撳啿鍖?/SPAN>25
int len;26
while((len=in.read(buffer)) != -1)27
out.write(buffer,0,len);28
in.close();29
out.close();30
31
conn.commit();32
}33
catch(Exception ex){34
try{35
conn.rollback();36
}37
catch(SQLException sqle){38
System.err.println(sqle.getMessage());39
}40
}41
42
^ Mustang ^ 2005-02-13 22:27 鍙戣〃璇勮
]]>