µãµãµÎµÎ(Java)

native2ascii
    ÔÚWINDOWSƽ̨ϱàдµÄ×ÊÔ´Îļþ,ÒÔGB2312·½Ê½±àÂë,ÔÚ±àÒëʱÐèҪתÂë,ÒÔÈ·±£ÔÚ¸÷¸öƽ̨ÉϵÄÕýÈ·ÐÔ
    ±àÂë:
        native2ascii -encoding utf8 temp.properties ApplicationResources_zh_CN.properties
    ·´±àÂë:
        native2ascii -reverse
JavaÈ¡ÄÚ´æÐÅÏ¢
    Runtime.getRuntime().maxMemory(); // ÐéÄâ»ú¿ÉÒÔ¿ØÖƵÄ×î´óÄÚ´æÊýÁ¿
    Runtime.getRuntime().totalMemory(); // ÐéÄâ»úµ±Ç°ÒѾ­Ê¹ÓõÄÄÚ´æÊýÁ¿
JVMÉèÖÃÄÚ´æ²ÎÊý
    -Xms<size> set initial Java heap size ÉèÖÃJVM³õʼ»¯¶ÑÄÚ´æ´óС
    -Xmx<size> set maximum Java heap size ÉèÖÃJVM×î´óµÄ¶ÑÄÚ´æ´óС
    -Xss<size> set java thread stack size ÉèÖÃJVMÕ»ÄÚ´æ´óС
TomcatµÄjavaµ÷ÊÔ
    JavaµÄµ÷ÊÔ¹¦ÄÜÊÇJVM×Ô´øµÄ,
    Ð½¨debug.batÎļþ, дÈëÒÔÏÂÄÚÈÝ, ÔËÐиÃÎļþÆô¶¯Tomcat¼´¿ÉÓëEclipseÔ¶³Ìµ÷ÊÔ
    set JPDA_ADDRESS=8787
    set JPDA_TRANSPORT=dt_socket
    set JAVA_OPTS=-Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,address=8787,server=y,suspend=n %JAVA_OPTS%
    startup
JspÏÂÔØÑ¡Ïî
    // attachment:×÷Ϊ¸½¼þÏÂÔØ | inline:ÔÚÏß´ò¿ª
    response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\";");
    // Ò»¶¨Òª±£Ö¤Ã»ÓÐ×ö¹ý¹ØÓÚ½ûÖ¹ä¯ÀÀÆ÷»º´æµÄ²Ù×÷
    // response.setHeader("Pragma", "No-cache");
    // response.setHeader("Cache-Control", "No-cache");
    // response.setDateHeader("Expires", 0);
Java·´ÉäÅжϷ½·¨ÓÐûÓзµ»ØÖµ
    method.getReturnType() == void.class // ûÓзµ»ØÖµ
JavaÃüÃû¹æ·¶
    PASCALÃüÃû·¨, ÓÃÓÚÀàÃû, ÿ¸öµ¥´