public class Quux {
public static void main(String[] args) {
ClassLoader cl=Quux.class.getClassLoader();
System.out.println("Delegation for Quux:");
while(cl!=null){
System.out.println(cl);
cl=cl.getParent();
}
System.out.println("{bootstrap loader}");
}
}
public static void main(String[] args) {
ClassLoader cl=Quux.class.getClassLoader();
System.out.println("Delegation for Quux:");
while(cl!=null){
System.out.println(cl);
cl=cl.getParent();
}
System.out.println("{bootstrap loader}");
}
}
寰楀埌寰楃粨鏋滄槸錛?br>
Delegation for Quux:
sun.misc.Launcher$AppClassLoader@131f71a
sun.misc.Launcher$ExtClassLoader@15601ea
{bootstrap loader}
sun.misc.Launcher$AppClassLoader@131f71a
sun.misc.Launcher$ExtClassLoader@15601ea
{bootstrap loader}
榪欓敾浠ｇ爜灞曠幇浜嗙被鍔犺澆鐨?涓姞杞藉櫒(ClassLoader):
AppClassLoader鏄?font color="#800080">緋葷粺綾誨姞杞藉櫒錛岋紙鍗崇敱getSystemClassLoader()鏂規硶鍙緱鍒扮殑Loader錛夛紝瀹冧富瑕佽礋璐ｅ姞杞藉簲鐢ㄧ被銆?br>ExtClassLoader鏄?font color="#800080">鎵╁睍綾誨姞杞藉櫒錛岄粯璁や笅璐熻矗鍔犺澆${JAVA_HOME}$/lib/ext鐩綍涓嬬殑綾匯?br>bootstrapLoader鏄?font color="#800080">寮曞綾誨姞杞藉櫒錛?font color="#000000">涓昏璐熻矗媯鏌ュ紩瀵艱礬寰勫強鍔犺澆鏍稿績api鍖呫?br>
榪?涓姞杞藉櫒鍏堝悗涓?boot->Ext->App ,boot鏄疎xt鐨勭埗鍔犺澆鍣紝Ext鏄疉pp鐨勭埗鍔犺澆鍣紝鍔犺澆鍣ㄦ槸鎴愭爲鐘剁殑錛屽綋鐒朵篃鍙互鑷繁瀹氫箟鍔犺澆鍣ㄣ傚姞杞藉櫒鍔犺澆鐨勬瘡涓涓被鐨勫疄渚嬮兘緇存姢涓寚鍚戣杞藉櫒鐨勫紩鐢紝鎵浠ヨ寰楀埌鍔犺澆鍣ㄥ緱寮曠敤寰堢畝鍗曪細getClassLoader()灝辮浜嗭紝鑰実etParent()鍒欏緱鍒板叾鐖剁被鍔犺澆鍣?浠ｇ爜涓〃鐜扮殑寰堟竻妤氫簡)銆?br>
綾誨姞杞藉櫒鏈変釜濮旀墭瑙勫垯錛堝熀鏈笂灝辨槸鍋鋒噿瑙勫垯錛夛細鍔犺澆鍣ㄥ姞杞界被鍓嶆繪槸瑕侀棶涓嬬埗鍔犺澆鍣ㄦ湁娌℃湁榪欎釜綾?鏈夊氨涓嶅姞杞戒簡-_-!),鑰岃繖涓繃紼嬩腑鐨凜lassLoader閫掑綊闆嗗氨縐頒負涓涓?font color="#800080">DELEGATION.
鍔犺澆鐨勮繃紼嬪張鏈夋樉紺哄姞杞斤紝涓鑸敤URLClassLoader錛?br> new URLClassLoader(new URL[]{url})
榪欑帺鎰忕帺鐑儴緗叉尯鏈夋剰鎬濈殑錛宼om鐚噷濂藉儚灝辨湁錛堟病浠涔堝嵃璞★紝姹楋級銆?br>
鏈夌殑浜轟篃鐢↙oader鏉ヨ杞介厤緗枃浠訛紝鎴戜篃鍠滄榪欎箞鐢紝
getSystemClassLoader().getResourceAsStream(String res);
榪欎釜鏂規硶榪斿洖涓狪nputStream,鐢╬roperties鎻愬彇涓嬪氨琛屼簡錛岀湡鏄眳瀹舵梾琛屽繀澶囪壇鑽晩銆?br> new Properties().load(is);
榪樻湁闅愬紡鍔犺澆錛屾棦鐒跺彨闅愬紡錛屽挶鏄庝唬鐮佸氨騫叉秹涓嶅埌浜嗭紝緇ф壙,寮曠敤涓鑸兘鏄殣寮忓姞杞界被鐨勩?br>
瀵逛簡錛宩ava涓繕鏈変釜鍙傛暟錛?font color="#800080">-verbose錛岀敤浜嗗畠灝卞彲浠ヨ緇嗙湅鍒板姞杞界殑榪囩▼銆?br>
綾誨姞杞藉睘浜庝腑綰х殑鐭ヨ瘑浜嗭紝搴旂敤鍐呭涔熶笉鏄竴鐐逛袱鐐癸紝鍜卞張涓嶆槸鐗涗漢錛岃涓嶅お娓呮銆傜墰浜?font color="#ff1493">Halloway鍐欑殑component Development for the java Platform鎸轟笉閿欙紝寤鴻鐪嬬湅錛涘湪IMBDevelopers涓婅繕鏈夊嚑綃囧緢濂界殑鏂囩珷錛屾湁鍏磋叮鐨勮瘽灝卞幓鐪嬬湅鍚с?br>
]]>