JavaỊ̈߳ºÏ̵߳ĵ÷¶È ÐÝÃß
JavaỊ̈߳ºÏ̵߳ĵ÷¶È-ÐÝÃß
JavaÏ̵߳÷¶ÈÊÇJava¶àÏ̵߳ĺËÐÄ£¬Ö»ÓÐÁ¼ºÃµÄµ÷¶È£¬²ÅÄܳä·Ö·¢»ÓϵͳµÄÐÔÄÜ£¬Ìá¸ß³ÌÐòµÄÖ´ÐÐЧÂÊ¡£
ÕâÀïÒªÃ÷È·µÄÒ»µã£¬²»¹Ü³ÌÐòÔ±Ôõô±àдµ÷¶È£¬Ö»ÄÜ×î´óÏ޶ȵÄÓ°ÏìÏß³ÌÖ´ÐеĴÎÐò£¬¶ø²»ÄÜ×öµ½¾«×¼¿ØÖÆ¡£
Ïß³ÌÐÝÃßµÄÄ¿µÄÊÇʹÏß³ÌÈóöCPUµÄ×î¼òµ¥µÄ×ö·¨Ö®Ò»£¬Ïß³ÌÐÝÃßʱºò£¬»á½«CPU×ÊÔ´½»¸øÆäËûỊ̈߳¬ÒÔ±ãÄÜÂÖ»»Ö´ÐУ¬µ±ÐÝÃßÒ»¶¨Ê±¼äºó£¬Ï̻߳áËÕÐÑ£¬½øÈë×¼±¸×´Ì¬µÈ´ýÖ´ÐС£
Ïß³ÌÐÝÃߵķ½·¨ÊÇThread.sleep(long millis) ºÍThread.sleep(long millis, int nanos) £¬¾ùΪ¾²Ì¬·½·¨£¬Äǵ÷ÓÃsleepÐÝÃßµÄÄĸöÏß³ÌÄØ£¿¼òµ¥Ëµ£¬ÄĸöÏ̵߳÷ÓÃsleep£¬¾ÍÐÝÃßÄĸöÏ̡߳£
/**
* JavaỊ̈߳ºÏ̵߳ĵ÷¶È-ÐÝÃß
*
* @author leizhimin 2009-11-4 9:02:40
*/
public class Test {
public static void main(String[] args) {
Thread t1 = new MyThread1();
Thread t2 = new Thread(new MyRunnable());
t1.start();
t2.start();
}
}
class MyThread1 extends Thread {
public void run() {
for (int i = 0; i < 3; i++) {
System.out.println("Ïß³Ì1µÚ" + i + "´ÎÖ´ÐУ¡");
try {
 
Ïà¹ØÎĵµ£º
±¾ÎÄÊ×ÏÈÉè¼ÆÒ»¸öµ¥´Î¶¨Ê±Æ÷Timer+TimerTask£¬È»ºóÔٴλù´¡ÉÏÉè¼ÆÒ»¸öÑ»·¶¨Ê±Æ÷¡£
ÎÒ½«°Ñ java.util.Timer ºÍ java.util.TimerTask ͳ³ÆÎª Java ¼ÆÊ±Æ÷¿ò¼Ü£¬ËüÃÇʹ³ÌÐòÔ±¿ÉÒÔºÜÈÝÒ׵ؼƻ®¼òµ¥µÄÈÎÎñ£¨×¢ÒâÕâЩÀàÒ²¿ÉÓÃÓÚ J2ME ÖУ©¡£²»¹ý£¬Java ¼ÆÊ±Æ÷¿ò¼ÜûÓÐ× ......
×÷ΪJava³ÌÐòÔ±À´Ëµ£¬×îÍ´¿àµÄÊÂÇéιýÓÚ¿ÉÒÔÑ¡ÔñµÄ·¶Î§Ì«¹ã£¬¿ÉÒÔ¶ÁµÄÊéÌ«¶à£¬ÍùÍùÈÝÒ×ÎÞËùÊÊ´Ó¡£ÎÒÏë¾ÍÎÒ×Ô¼º¶Á¹ýµÄ¼¼ÊõÊé¼®ÖÐÌôÑ¡³öÀ´Ò»Ð©£¬°´ÕÕѧϰµÄÏȺó˳Ðò£¬ÍƼö¸ø´ó¼Ò£¬ÌرðÊÇÄÇЩÏë²»¶ÏÌá¸ß×Ô¼º¼¼ÊõˮƽµÄJava³ÌÐòÔ±ÃÇ¡£
¡¡¡¡Ò»¡¢Java±à³ÌÈëÃÅÀà
¡¡¡¡¶ÔÓÚûÓÐJava±à³Ì¾ÑéµÄJava³ÌÐòÔ±ÒªÈëÃÅ£¬Ëæ±ã¶ÁʲôÈëÃÅÊé ......
public class test1
{
public static void main(String[] args){
//== ÓëequalsµÄÇø±ð
//1.nullµÄ±È½Ï£ºÖ»ÄÜÓÃ==
System.out.println("1.nullµÄ±È½Ï£ºÖ»ÄÜÓÃ==");
Object o1=null,o2=null;
System.out.println(null==null&&o1==null& ......
JavaỊ̈߳ºÏ̵߳Äͬ²½ÓëËø
Ò»¡¢Í¬²½ÎÊÌâÌá³ö
Ï̵߳Äͬ²½ÊÇΪÁË·ÀÖ¹¶à¸öÏ̷߳ÃÎÊÒ»¸öÊý¾Ý¶ÔÏóʱ£¬¶ÔÊý¾ÝÔì³ÉµÄÆÆ»µ¡£
ÀýÈ磺Á½¸öÏß³ÌThreadA¡¢ThreadB¶¼²Ù×÷ͬһ¸ö¶ÔÏóFoo¶ÔÏ󣬲¢ÐÞ¸ÄFoo¶ÔÏóÉϵÄÊý¾Ý¡£
public class Foo {
private int x = 100;
......
JavaỊ̈߳ºÏ̵߳Ľ»»¥
SCJP5ѧϰ±Ê¼Ç
Ï߳̽»»¥ÊDZȽϸ´ÔÓµÄÎÊÌ⣬SCJPÒªÇ󲻺ܻù´¡£º¸ø¶¨Ò»¸ö³¡¾°£¬±àд´úÂëÀ´Ç¡µ±Ê¹Óõȴý¡¢Í¨ÖªºÍ֪ͨËùÓÐÏ̡߳£
Ò»¡¢Ï߳̽»»¥µÄ»ù´¡ÖªÊ¶
SCJPËùÒªÇóµÄÏ߳̽»»¥ÖªÊ¶µãÐèÒª´Ójava.lang.ObjectµÄÀàµÄÈý¸ö·½·¨À´Ñ§Ï°£º
void notify()
......