Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

JAVA ÍøÉÏʰÒÅ

public String makeStars(int size, char ch) {
    if(size < 1) {
        throw new IllegalArgumentException("size must be greater than 0");
    }
    char[] chs = new char[size];
    for(int i = 0; i < size; i++) {
        chs[i] = ch;
    }
    return new String(ch);
}


Ïà¹ØÎĵµ£º

java ÖÐ Map±éÀú


µÚ¶þÖÖ·½·¨Ð§Âʸü¸ß
·¨¢Ù
Map map = new HashMap();
    Iterator it = map.entrySet().iterator();
    while (it.hasNext()) {
        Map.Entry entry = (Map.Entry) it.next();
        Object key = e ......

java web²¿Êð


 ¸÷Èí¼þʹÓð汾
£º
  Tomcat
°æ±¾£º
apache-tomcat-5.5.17
  Jdk
°æ±¾£º
jdk1.6.0_11
  Mysql
°æ±¾£º
mysql-5.0.77-win32
 
1.      
jdk
°²×°
н¨ÏµÍ³±äÁ¿
JAVA_HOME
£º
C:\Program Files\Java\jdk1.6.0_11
×¢Ò⣺½¨¹ýÖ®ºó¿ÉÒÔÊÔһϣ¬·ñÔ ......

javaÃæÊÔÖÐһЩString³£¼ûÎÊÌâ


String s = new String("abc");   
String s1 = "abc";   
String s2 = new String("abc");   
  
System.out.println(s == s1);   
System.out.println(s == s2);   
S ......

java×ÀÃæ³ÌÐòÖ®Òþ²ØÊó±ê

Òþ²Ø´°ÌåÄÚµÄÊó±êÖ¸Õ룬ֱ½ÓÉÏ´úÂë
import java.awt.Image;
import java.awt.Point;
import java.awt.Toolkit;
import java.awt.image.MemoryImageSource;
import javax.swing.JFrame;
public class HideCursor extends JFrame {
 HideCursor() {
  this.setBounds(300, 300, 300, 300);
 &nb ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ