»ùÓÚJavaµÄ¼òÒײ¥·ÅÆ÷
ÔÚJava AplicationÖÐʵÏֵļòÒײ¥·ÅÆ÷¡£À´Ô´ÓÚºúÇɶàÖ÷±àµÄ¡¶Java³ÌÐòÉè¼Æ°¸Àý½Ì³Ì¡·
ÎÒÊÔÔËÐйýÁË£¬ÆäÖÐµÄ “Ìýº£.wav”,“Ò»¶¨Òª°®Äã.wav”ÒôƵÎļþÒª·ÅÔÚclassËùÔÚµÄÎļþ¼ÐÖУ¬ÇÒÖ»Ö§³Öwav¸ñʽ
Ô´´úÂ룺
import java.applet.Applet;
import java.applet.AudioClip;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
public class TestAudioClip extends JFrame implements ActionListener,ItemListener {
boolean looping=false;
String[] chioces={"Ìýº£.wav","Ò»¶¨Òª°®Äã.wav"};
URL sound1File1=getClass().getResource(chioces[0]);
URL sound2File2=getClass().getResource(chioces[1]);
//private AudioClip sound1;
AudioClip sound1=Applet.newAudioClip(sound1File1);
AudioClip sound2=Applet.newAudioClip(sound2File2);
AudioClip chosenClip=sound1;
JComboBox soundFiles=new JComboBox(chioces);
JButton playButton=new JButton("¿ªÊ¼²¥·Å");
JButton loopButton=new JButton("Ñ»·²¥·Å");
JButton stopButton=new JButton("Í£Ö¹²¥·Å");
JLabel status=new JLabel("ÇëÑ¡Ôñ²¥·ÅµÄÒôÀÖ");
JPanel controlPanel=new JPanel();
Container container=getContentPane();
public TestAudioClip(){
super("ÒôÀÖ²¥·ÅÆ÷");
soundFiles.setBackground(Color.yellow);
soundFiles.setSelectedIndex(0);
soundFiles.addItemListener(this);
playButton.addActionListener((java.awt.event.ActionListener) this);
loopButton.addActionListener((java.awt.event.ActionListener) this);
stopButton.addActionListener((java.awt.event.ActionListener) this);
stopButton.setEnabled(false);
 
Ïà¹ØÎĵµ£º
1¡¢Java.utilµÄ¼¯ºÏÀàÖеÄÔªËØ±ØÐëÊǶÔÏ󻯵ģ¬ËûÃDz»ÄÜÊÇ»ù±¾ÀàÐÍ¡£Èç²»ÄÜÉùÃ÷Set<char>»òList<int>¡£µ«¶ÔList<Integer>£¬¿ÉÒÔÍùÀïÃæ¼ÓintÐÍÊý¾Ý£¬Ëü»áÓÃJavaµÄautoboxing»úÖÆ×Ô¶¯×ª»»³ÉInteger¶ÔÏó¡£
2¡¢²ÎÊý»¯ÀàÖеÄÀàÐͲÎÊý¿ÉÒÔÊÇÊý×éÀàÐÍ£¬ÈçMap< ......
ÎÊÌâÒ»£ºÈç±£¼ÓÔØJDBCÇý¶¯³ÌÐò£º
Õý³£ÎÒÃǼÓÔØÇý¶¯³ÌÐòÓÐÈý¸ö;¾¶£º
1.Class.forName(String)ÕâÏëµ±ÓÚclassLoaderÒ»¸öStringÖ¸¶¨µÄÀ࣬ÔÚ×°ÔØÊ±°Ñ¸ÃÇý¶¯³ÌÐòµÄ¾²Ì¬ÄÚÈݶ¼³õʼ»¯£¬ÆäʵÕâʱÇý¶¯³ÌÐòÀàµ÷ÓÃÁËDriverManager.registerDriver(driver)·½·¨¡£
2.ʹÓÃϵͳÊôÐÔ£ºSystem.getPro ......
1. Õ»(stack)Óë¶Ñ(heap)¶¼ÊÇJavaÓÃÀ´ÔÚRamÖдæ·ÅÊý¾ÝµÄµØ·½¡£ÓëC++²»Í¬£¬Java×Ô¶¯¹ÜÀíÕ»ºÍ¶Ñ£¬³ÌÐòÔ±²»ÄÜÖ±½ÓµØÉèÖÃÕ»»ò¶Ñ¡£
2. Õ»µÄÓÅÊÆÊÇ£¬´æÈ¡ËٶȱȶÑÒª¿ì£¬½ö´ÎÓÚÖ±½ÓλÓÚCPUÖеļĴæÆ÷¡£µ«È±µãÊÇ£¬´æÔÚÕ»ÖеÄÊý¾Ý´óСÓëÉú´æÆÚ±ØÐëÊÇÈ·¶¨µÄ£¬È±·¦Áé»îÐÔ¡£ÁíÍ⣬ջÊý¾Ý¿ÉÒÔ¹²Ïí£¬Ïê¼ûµÚ3µã¡£¶ÑµÄÓÅÊÆÊÇ¿ÉÒÔ¶¯Ì¬µØ·ÖÅä ......
¶ÔÓÚÒ»¸öʵÏÖÁËComparable½Ó¿ÚµÄ¶ÔÏ󣬸ýӿÚÖ»ÄÜʵÏÖÒ»´Î¡£Èç¹ûÔÚÒ»¸ö¼¯ºÏÀïÃæÐèҪʹÓÃidÅÅÐò£¬¶øÔÚÁíÍâÒ»¸ö¼¯ºÏÀïÐèÒª°´Ãû×ÖÅÅÐòÕâʱ¾ÍÐèÒªÔÚÕâ¸ö¼¯ºÏÀïÃæÖ¸¶¨±È½ÏÆ÷¡£
Comparable½Ó¿ÚÉùÃ÷ÁËcompareTo(Object o)·½·¨
Comparator ½Ó¿ÚÉùÃ÷ÁËcompare(Object o1,Object o2)·½·¨
eg:
µÚÒ»¸öÊ÷¼¯Êǰ´ÕÕ¶ÔÏóĬÈϵÄidÅÅÐò£¬µ ......
public class DateTest {
public static void main(String[] args) {
Date date = new Date(); // н¨Ò»¸öÈÕÆÚ
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); // ¸ñʽ»¯ÈÕÆÚ
String beforeDate = sdf.format(getDateBefore(date, 10));
System ......