̸̸javaÈçºÎѧϰ
Çë²»Òª°ÑÄãµÄѧϰJava֮·ºÍÆäËü¼ÆËã»ú¼¼Êõ·Ö¿ª¿´´ý£¬¼¼ÊõµÄÁªÏµÍùÍùÊÇǧ˿ÍòÂÆµÄ£¬ÄãÓ¦¸ÃÕÆÎÕһЩѧϰJavaËùÉæ¼°µÄ»ù´¡ÖªÊ¶£¬¶ÔÓÚ “CLASSPATHÒªÔõôÉèÖð¡”¡¢“¹òÇóJDKÏÂÔØµØÖ·”µÈµÈÎÊÌ⣬Äã²»¸ÃÎÊ£¬ÒòΪInternetÉÏÌ«¶à´ð°¸ÁË£¬ÉõÖÁ»»¸ö½Ç¶È˵£¬ÄãÊDz»ÊÇ»¹²»ÊʺÏÖ±½Óѧϰ±à³Ì£¿
1£©Âò±¾JavaѧϰÓÃÊé¡£
JDK 6Õýʽ°æ¸Õ¸ÕÍÆ³ö£¬ÊÐÃæÉÏÄãÔÝʱÂò²»µ½JDK 6µÄÊé¼®£¬µ«ÎÒÈÔÍÆ¼öÄãÂòÒ»±¾ÊʺÏÈëÃŵġ¢½ÏÐÂJDK°æ±¾µÄJavaÊé¼®£¬ÄÇô£¬ÄãÏÖÔÚÑ¡ÔñÒ»±¾½²ÊöJDK 5µÄÈëÃÅÊé¼®»¹ÊÇÓÐÌõ¼þµÄ¡£ÎÒ¿ÉÒÔÍÆ¼öһЩÈëÃÅÊ飬µ«ÊÇÎÒ²»´òËãÕâô×ö£¬ÒòΪºÏÎÒ¿ÚζµÄ£¬²»Ò»¶¨ÊʺÏÄã¡£µ«ÎÞÂÛÈçºÎ£¬¡¶Thing In Java¡·¾ø¶Ô²»Ó¦¸Ã×÷ΪÄãÈëÃÅJavaµÄµÚÒ»±¾Êé¼®£¡
¼Çס£¬ÍøÂçÉÏѧϰJavaµÄ×ÊÔ´ºÜ¶à£¬µ«»ù±¾²»¹»ÏµÍ³£¬ÓµÓÐÒ»±¾JavaÈëÃÅÊé¼®£¬ÊÇÄãϵͳѧϰJavaµÄ»ù´¡¡£
2£©×¼±¸Javaѧϰ»·¾³¡£
×¼±¸ÄãµÄѧϰ»·¾³£¬ºÜ¼òµ¥£¬°²×°JDK 6£¬È»ºóÓÃÀàËÆUltraEdit¡¢EditPlusµÄÎı¾±à¼Æ÷ÅäÖÃÄãµÄѧϰ»·¾³£¬InternetÉÏÓÐºÜ¶à¹ØÓÚÈçºÎÅäÖõÄÎÄÕ¡£³õѧJava£¬²»½¨ÒéÓÃIDE¹¤¾ß£¬Í¨¹ýÒ»ÐÐÐеÄÇôúÂ룬Äã»áÅöµ½ºÜ¶àÎÊÌ⣬ֻÓÐÕâÑù£¬Äã²ÅÄÜѧ»áÔõÑù½â¾öÎÊÌ⣬²¢¼ÓÉî×Ô¼º¶ÔJavaµÄÀí½â¡£
ѧϰJavaµÄ¹ý³ÌËäÈ»ÐÁ¿àЩ£¬µ«ÓÖÊÇ´¦´¦Óо«²Ê£¡Ñ§Ï°¹ý³ÌÖеÄÐÄ̬һ¶¨Òª±£³Öרһ£¬ÍøÉϹØÓÚÓïÑÔ¼äµÄ“PK”µ½´¦¶¼ÊÇ£¬±ð±»¸¡ÔêÓ°Ï죡ÈÏ×¼ÁËJava£¬Äã¾Í¼á³Ö£¡¿Ë·þÐÄħ£¬ºãÐÄ×îÖÕ»á¸øÄã»Ø±¨µÄ¡£
JavaµÄÌåϵ·ÖΪJava SE¡¢Java EEºÍJava ME£¨JDK 5.0ÒÔǰ·Ö±ð½ÐJ2SE¡¢J2EEºÍJ2ME£©£¬JavaµÄÇÃÃÅש¾ÍÊÇJava SEÁË£¬Ò²¾ÍÊÇÄãÒªÈëÃÅѧϰµÄÄÚÈÝ£¬²»ÂÛÄãÈÕºóÊÇÑ¡ÔñÄĸöÌåϵÁìÓò×÷Ϊ·¢Õ¹·½Ïò£¬Äã¶¼µÃ´ÓJava SEÆð²½¡£
ѧϰJava SE£¬´òºÃJava»ù´¡£»Èç¹ûÏëѧJava EE£¨¶Ô²»Æð£¬ÎÒ²»Á˽âJava ME£¬ËùÒÔÎÒÎÞ·¨Éæ¼°Java MEµÄÏà¹ØÄÚÈÝ£©£¬¶ÔÓÚAWT¡¢SwingÊÇ·ñÒªÑ§Ï°ÄØ£¬ÎÒ¸öÈËÊǾõµÃ»¹ÊÇÒªÖªµÀÆäËùÒÔÈ»µÄ£¬ÌرðÊÇÆäʼþ´¦Àíģʽ£¬ÎÒÇ¿ÁÒ½¨Òé³õѧÕßÒ»¶¨ÒªÅªÇå³þ£¬ÆäËû¾ßÌåµÄ¿ª·¢¾Í²»Ò»¶¨ÒªÈ«ÃæÕÆÎÕÁË£¬±Ï¾¹AWT¡¢Swing·½ÃæµÄÄÚÈÝ×ã¹»Óü¸±¾´ó²¿Í·µÄÊé²ÅÄÜÃèÊöÏ꾡£»µ±È»£¬Èç¹ûÄãµÄ¹¤×÷¾ÍÊÇ×ö AWT¡¢Swing¿ª·¢£¬ÄǾÍÁíµ±±ðÂÛÁË¡£
Ïà¹ØÎĵµ£º
Java³ÌÐòµ÷Óô洢¹ý³ÌÑéÖ¤Óû§µÇ¼
package com.yzy.jdbc.dao;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import oracle.jdbc.OracleTypes;
public class LoginDao {
public boolean loginValidate(String username, Stri ......
ʲôÊÇJavaÐéÄâ»ú
JavaÐéÄâ»ú£¨Java Virtual Machine) ¼ò³ÆJVM
¡¡¡¡JavaÐéÄâ»úÊÇÒ»¸öÏëÏóÖеĻúÆ÷,ÔÚʵ¼ÊµÄ¼ÆËã»úÉÏͨ¹ýÈí¼þÄ£ÄâÀ´ÊµÏÖ¡£JavaÐéÄâ»úÓÐ×Ô¼ºÏëÏóÖеÄÓ²¼þ,Èç´¦ÀíÆ÷¡¢¶ÑÕ»¡¢¼Ä´æÆ÷µÈ,»¹¾ßÓÐÏàÓ¦µÄÖ¸Áîϵͳ¡£
JavaÐéÄâ»úµÄÌØµã
¡¡¡¡JavaÓïÑÔµÄÒ»¸ö·Ç³£ÖØÒªµÄÌØµã¾ÍÊÇÓëÆ½Ì¨µÄÎÞ¹ØÐÔ¡£¶øÊ¹ÓÃJavaÐéÄâ»úÊÇÊµÏ ......
µÚÒ»£¬Ì¸Ì¸final, finally, finalizeµÄÇø±ð¡£ ¡¡¡¡
final—ÐÞÊηû£¨¹Ø¼ü×Ö£©Èç¹ûÒ»¸öÀà±»ÉùÃ÷Ϊfinal£¬Òâζ×ÅËü²»ÄÜÔÙÅÉÉú³öеÄ×ÓÀ࣬²»ÄÜ×÷Ϊ¸¸Àà±»¼Ì³Ð¡£Òò´ËÒ»¸öÀ಻Äܼȱ»ÉùÃ÷Ϊ
abstractµÄ£¬ÓÖ±»ÉùÃ÷ΪfinalµÄ¡£½«±äÁ¿»ò·½·¨ÉùÃ÷Ϊfinal£¬¿ÉÒÔ±£Ö¤ËüÃÇÔÚʹÓÃÖв»±»¸Ä±ä¡£±»ÉùÃ÷ΪfinalµÄ±äÁ¿±ØÐëÔÚÉùÃ÷ʱ¸ø¶¨
......
package graphic;
import javax.swing.ImageIcon;
import javax.swing.JTree;
import java.awt.Component;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.DefaultMutableTreeNode;
/**
*
* @author bianzhiqi
* ¾ßÌå·½·¨µÄʹÓò鿴DefaultTreeCellRendererµÄÎĵµ
*/
public c ......
import java.awt.*;
import java.awt.event.*;
public class TestFrame {
Frame fm = new Frame();
public void init(){
fm.setSize(300,300);
Button btn = new Button("ok");
fm.add(btn);
btn.addActionListener(ne ......