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}
鍦≒roperties鐨凙PI涓湁涓嬮潰鐨勪竴孌佃瘽錛孲un閫氳繃鏂囨。鏉ュ譏琛ヨ璁′笂鐨勭己闄楓?/p>
鍥犱負 Properties 緇ф壙浜?Hashtable錛屾墍浠ュ彲瀵?Properties 瀵硅薄搴旂敤 put 鍜?putAll 鏂規硶銆備絾寮虹儓鍙嶅浣跨敤榪欎袱涓柟娉曪紝鍥犱負瀹冧滑鍏佽璋冪敤鏂規彃鍏ュ叾閿垨鍊間笉鏄?Strings 鐨勯」銆傜浉鍙嶏紝搴旇浣跨敤 setProperty 鏂規硶銆傚鏋滃湪鈥滄湁鍗遍櫓鈥濈殑 Properties 瀵硅薄錛堝嵆鍖呭惈闈?String 鐨勯敭鎴栧鹼級涓婅皟鐢?store 鎴?save 鏂規硶錛屽垯璇ヨ皟鐢ㄥ皢澶辮觸銆?/blockquote>
]]>
銆愭柟娉曚竴銆?br>鎻掑叆縐誨姩瀛樺偍璁懼鍚庢寜SHIFT閿笉鏉懼嵆鍙?
銆愭柟娉曚簩銆?br>鐢ㄧ粍絳栫暐鍙互鍏ㄩ儴紱佺敤Windows XP鐨勮嚜鍔ㄦ挱鏀懼姛鑳斤紝姝ラ濡備笅錛?
1銆佺偣鍑籛indows鈥滃紑濮嬧濓紞鈥滆繍琛屸濓紝閿叆鈥済pedit.msc鈥濓紝鐐瑰嚮紜畾鎸夐挳錛屾墦寮鈥滅粍絳栫暐鈥濈獥鍙o紱
2銆佸湪紿楀彛宸︽爮鐨勨滄湰鍦拌綆楁満絳栫暐鈥濅笅錛屾墦寮鈥滆綆楁満閰嶇疆/綆$悊妯℃澘/緋葷粺鈥濓紝鐒跺悗鍦ㄥ彸鏍忕殑鈥滆緗濇爣棰樹笅錛岄紶鏍囧弻鍑繪墦寮鈥滃叧闂嚜鍔ㄦ挱鏀鋸濓紱
3銆侀夋嫨鈥滆緗濋夐」鍗★紝鍕鵑夆滃凡鍚敤鈥濆閫夐挳錛岀劧鍚庡湪鈥滃叧闂嚜鍔ㄦ挱鏀鋸濇涓夋嫨鈥滄墍鏈夐┍鍔ㄥ櫒鈥濓紝鍗曞嚮鈥滅‘瀹氣濇寜閽紝閫鍑衡滅粍絳栫暐鈥濈獥鍙c?
鍘熷湴鍧錛?a title="http://csc.rising.com.cn/KnowledgeBase/detailInfo.aspx?Action=ViewInfo&InfoID=757&Channel=RSQ" >http://csc.rising.com.cn/KnowledgeBase/detailInfo.aspx?Action=ViewInfo&InfoID=757&Channel=RSQ
public static Object newProxyInstance(ClassLoader loader, Class[] interfaces, InvocationHandler handler);
鍙傛暟錛?/p>
鍑芥暟榪斿洖鐨勫璞$被鍨嬫槸$Proxyn, (n >= 0. 絎竴嬈¤皟鐢ㄨ繖涓柟娉曪紝鏂扮被鍚嶄負$Proxy0, 絎簩涓柊綾誨悕涓?Proxy1, 浠ユ綾繪帹)
鐢熸垚鐨?Proxyn 鐨勬簮浠g爜澶ц嚧綾諱技濡傛錛?/p>
public final class $Proxy0 implements interfaces {
InvocationHandler handler;
public String toString() {
Method m = this.getClass().getMethod("toString");
handler.invoke(this, m, m.getParameters());
}
// 浠ヤ笅鏄疄鐜癷nterfaces鐨勬柟娉?br> public return_type interfaces_method(args...) {
Method m = this.getClass().getMethod("equals");
handler.invoke(this, m, m.getParameters());
}
... ...鎺ュ彛interfaces涓殑鍏朵粬鏂規硶
}
褰撴垜浠繖鏍瘋皟鐢ㄦ椂: Object o = Proxy.newProxyInstance(null, interfaces, handler0);
灝辯敓鎴愪竴涓柊$Proxy0綾葷殑瀵硅薄o, 榪欎釜瀵硅薄o鐨勫瓧孌礹andler琚祴鍊間負handler0銆?Proxy0瀹炵幇浜唅nterfaces涓墍鏈夌殑鎺ュ彛錛屽叾瀹炵幇鏂瑰紡閮戒竴鏍鳳紝灝辨槸璋冪敤瀛楁handler鐨刬nvoke鏂規硶銆傚叾UML鍥懼涓嬶細
紼嬪簭鍛樼殑鍋ュ悍闂錛屾槸涓緢瀹規槗琚▼搴忓憳鑷繁蹇界暐鐨勯棶棰樸傚叧娉ㄤ竴孌電▼搴忥紝涓鏅冨氨鏄ソ鍑犱釜灝忔椂銆傜溂鐫涜秺鏉ヨ秺榪戣錛岄妞庤秺鏉ヨ秺閰搞傚浣曡В鍐寵繖涓棶棰橈紵
瑕佹槸鏈変釜闂歸挓錛屾潵涓暣鐐規姤鏃跺氨濂戒簡銆傛暣鐐逛竴鍒幫紝浠庡駭浣嶈搗鏉ワ紝鎵撴澂姘達紝娉℃澂鍜栧暋錛屽仛鍋氶閮ㄥ拰鍥涜偄鐨勪幾灞曡繍鍔紝闀挎浠ュ線錛屽仴搴瘋嚜鐒跺洖鏉ヤ簡銆?/p>
絀洪棽涔嬩綑錛屽氨鐢↗ava鍋氫簡榪欐牱鐨勪竴涓椆閽熺▼搴忋傚惎鍔ㄥ悗錛岀▼搴忓氨鍦ㄧ郴緇熸墭鐩樹腑錛屽浘鏍囨槸榪欐牱鐨?a href="http://m.tkk7.com/images/blogjava_net/jeff-lau/WindowsLiveWriter/c20587c55223_594E/image_4.png"> 銆?/p>
紼嬪簭蹇呴』榪愯鍦╦dk6+涓?/strong>
涓嬭澆鍦板潃錛?a title="http://m.tkk7.com/Files/jeff-lau/clock.zip" href="http://m.tkk7.com/Files/jeff-lau/clock.zip">http://m.tkk7.com/Files/jeff-lau/clock.zip
棣栧厛錛屾潵鐪嬬湅浜ゆ崲涓嬮潰鐨勭▼搴忋備負浜嗕氦鎹袱涓暣鏁板彉閲忕殑鍐呭錛屽啓浜嗕笅闈㈣繖鏍風殑涓涓柟娉曞疄鐜幫細
public void swap(int i, int j) {
int t = i;
i = j;
j = t;
}
璋冪敤涓婇潰鐨勬柟娉曪紝鏈夐棶棰樺悧錛?/p>
int x = 100;
int y = 1;
swap(x, y);
鍦ㄧ▼搴忔墽琛屾孌典唬鐮佸悗錛屼綘浼氬彂鐜幫紝x榪樻槸100錛?y榪樻槸1銆備負浠涔堝憿錛熷洜涓篔ava瀵規柟娉曞弬鏁扮殑浼犻掞紝鏄嬌鐢?strong>鍊艱皟鐢?call by value)鐨勩傛兂鎯籌紝濡傛灉鎴戣繖鏍瘋皟鐢╯wap鍑芥暟鍛紝swap(3, 4)錛岃繖鏄帿鍚嶅叾濡欑殑錛屾湁璋佷細瑕佷氦鎹?鍜?榪欎袱涓父鏁板憿銆?/p>
閭f病鍔炴硶浜ゆ崲涓や釜鏁存暟鍙橀噺浜嗗悧錛熷彲浠ャ傛妸swap鍑芥暟浣撴浛鎹㈡帀swap鍑芥暟鐨勮皟鐢ㄥ氨鍙互浜嗐傚錛?/p>
int x = 100;
int y = 1;
int t = x;
x = y;
y = t;
Java涓叾浠栫殑鍘熺敓綾誨瀷(primitive type)鐨勬儏鍐碉紝鍜宨nt鐨勪竴鏍楓?/p>
緇х畫璁ㄨ鍑芥暟璋冪敤鍚с傚嚱鏁拌皟鐢ㄦ椂錛屽弬鏁頒紶閫掔殑鏂瑰紡涓昏鏈変袱縐嶏細
Java浣跨敤鐨勬槸鍊間紶閫掋傚間紶閫掓槸鎶婂彉閲忕殑鍊箋佸父鏁版垨甯擱噺浼犻掔粰鍙傛暟銆傝屽紩鐢ㄤ紶閫掞紝鏄妸鍙橀噺鐨勬墍鍦ㄥ唴瀛樹腑鐨勫湴鍧浼犻掔粰鍙傛暟錛屽弬鏁伴氳繃鍦板潃鎵懼埌鍙橀噺鐨勫箋傚緢鏄庢樉錛屽紩鐢ㄤ紶閫掍笉鑳芥妸甯告暟浼犻掔粰鍙傛暟銆傚間紶閫掑拰寮曠敤浼犻掕繕鏈変竴涓緢澶х殑涓嶅悓錛氬浜庡儚int榪欐牱鐨勫皬綾誨瀷鍙橀噺鏉ヨ錛屽間紶閫掓病鍓綔鐢紝鑰屽紩鐢ㄤ紶閫掓湁銆備篃灝辨槸璇達紝鍦ㄥ嚱鏁拌皟鐢ㄧ殑鎵ц榪囩▼涓紝涓嶈兘鏀瑰彉浼犻掔粰鍙傛暟鐨勫彉閲忕殑鍊箋?/p>
浣嗗浜庢櫘閫氱被綾誨瀷鍙傛暟鐨勪紶閫掓柟寮忕殑鐞嗚В鍜屽師鐢熺被鍨嬫湁鐐逛笉鍚屻傚浜庢柟娉昺ethod(Object o)鐨勮皟鐢╩ethod(x)錛?涓嶆槸鎶婂璞澶嶅埗涓浠戒紶閫掔粰鍙傛暟o錛岃屾槸鎶婂璞鐨勫湪鍐呭瓨涓殑棣栧湴鍧錛屼篃灝辨槸鎶婂璞鐨勫紩鐢ㄦ嫹璐濈粰鍙傛暟o銆傝繖鏍峰氨鑳借繖鏍峰疄鐜板璞$殑浜ゆ崲鍑芥暟浜嗗悧錛?/p>
public void swap(Object o, Object p) {
Object t = o;
o = p;
p = t;
}
絳旀鏄細No銆傚洜涓哄儚涓嬮潰榪欐牱鐨勮皟鐢細
Object x = X;
Object y = Y;
swap(x, y);
鍦ㄦ墽琛屽畬涓婄殑浠g爜鍚庯紝x鎸囧悜鐨勮繕鏄師鏉ョ殑X瀵硅薄錛寉鎸囧悜鐨勮繕鏄偅涓猋瀵硅薄銆傚氨鍍忔瓕鍞辯殑閭f牱錛氭槦鏄熻繕鏄偅涓槦鏄燂紝鏈堜寒榪樻槸閭d釜鏈堜寒銆?/p>
闅鵑亾灝變笉鑳介氳繃鏂規硶璋冪敤瀹炵幇浜ゆ崲榪欎釜鍔熻兘鍚楋紵鍙互銆傛湁涓ょ鍔炴硶錛?/p>
public void swap(Object[] a, int i, int j) {
Object t = a[i] ;
a[i] = a[j];
a[j] = a[i];
}
鐢ㄥ弽灝勫疄鐜皊wap鍑芥暟錛屾湁鐐規潃楦$敤澶х偖鐨勬劅瑙夈傛ц兘涓嶆庝箞鏍鳳紝榪樺鏄撳嚭閿欍傝繖涓暀鐫鍋氬搴綔涓氬惂銆?/p>